stratum: RandomX pool mining support + reference miner (stratummine)

The stratum server was hardcoded for legacy Equihash (1347-byte solution,
sol.begin()+3 offset, CheckEquihashSolution) and was off-by-default with a
"do not use on RandomX" warning. DragonX is RandomX, so external pool mining
was impossible. This wires RandomX end-to-end.

Server (stratum.cpp), branched on ASSETCHAINS_ALGO == ASSETCHAINS_RANDOMX:
* GetWorkUnit sets StratumWork.nHeight and, for RandomX, sends the per-height
  RandomX key via a new mining.set_randomx_key message (a miner cannot derive
  it without the chain). The legacy mining.notify format is unchanged.
* SubmitBlock/stratum_mining_submit accept a 32-byte solution (== the RandomX
  hash, used as nSolution verbatim) and validate it with CheckRandomXSolution
  instead of CheckEquihashSolution. Target check (GetHash() < target) and the
  nNonce = extranonce1||extranonce2 assembly are shared with the equihash path.
* -stratumtarget=<hex> overrides the pool share target (default diff-1); lets a
  solo/low-difficulty test miner accept easy shares.
* GetWorkUnit's IsInitialBlockDownload guard is bypassed under -testnode=1 so an
  isolated low-work test chain can serve work.

Reference miner: `stratummine "host" port ("address" timeout)` RPC (rpc/mining.cpp,
POSIX-only). A minimal stratum client that subscribes/authorizes, receives work +
the RandomX key, varies nNonce, hashes with RandomX via GetRandomXInput (byte-
identical to CheckRandomXSolution) and submits a 32-byte solution. Off-the-shelf
Equihash/Monero miners can't speak DragonX's 256-bit-nNonce Zcash header, so this
is the reference implementation. Added to the rpc client arg-conversion table.

Validated: loopback (chain 0->4, accepted every time, verifychain=true) AND a real
2-box LAN run (Linux miner -> Mac stratum server, 3 blocks accepted, verifychain=true).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

.gitignore

@@ -131,7 +131,6 @@ src/cc/rogue/rogue
 src/cc/rogue/rogue.so
 
 src/cc/rogue/test.zip
-src/cc/dapps/a.out
 src/checkfile
 
 src/foo.zip
@@ -154,14 +153,15 @@ src/rogue.scr
 src/cc/rogue/confdefs.h
 src/cc/rogue/x64
 
-src/cc/dapps/a.out
 src/Makefile.in
 doc/man/Makefile.in
 Makefile.in
 src/libcc.so
 src/libcc.dll
+src/libcc.dylib
 src/cc/customcc.so
 src/cc/customcc.dll
+src/cc/customcc.dylib
 src/HUSH3_7776
 REGTEST_7776
 src/cc/librogue.so

configure.ac

@@ -833,6 +833,22 @@ AM_CONDITIONAL([TARGET_DARWIN], [test x$TARGET_OS = xdarwin])
 AM_CONDITIONAL([BUILD_DARWIN], [test x$BUILD_OS = xdarwin])
 AM_CONDITIONAL([TARGET_LINUX], [test x$TARGET_OS = xlinux])
 AM_CONDITIONAL([TARGET_WINDOWS], [test x$TARGET_OS = xwindows])
+
+dnl mingw ld is single-pass: bracket the internal static archives in a link group
+dnl so it re-scans and resolves the cross-references DragonX added between them
+dnl (libbitcoin_util/common objects using UniValue; util<->common mutual deps).
+dnl Delivered via AC_SUBST (not an automake conditional) so automake does not
+dnl reject the linker flags inside _LDADD. Empty elsewhere (macOS ld64 rejects the
+dnl flag; GNU ld on Linux re-scans archives already).
+if test "x$TARGET_OS" = "xwindows"; then
+  LINK_GROUP_START="-Wl,--start-group"
+  LINK_GROUP_END="-Wl,--end-group"
+else
+  LINK_GROUP_START=""
+  LINK_GROUP_END=""
+fi
+AC_SUBST(LINK_GROUP_START)
+AC_SUBST(LINK_GROUP_END)
 AM_CONDITIONAL([ENABLE_WALLET],[test x$enable_wallet = xyes])
 AM_CONDITIONAL([ENABLE_MINING],[test x$enable_mining = xyes])
 AM_CONDITIONAL([ENABLE_TESTS],[test x$BUILD_TEST = xyes])

depends/packages/librustzcash.mk

@@ -53,6 +53,6 @@ endif
 define $(package)_stage_cmds
   mkdir $($(package)_staging_dir)$(host_prefix)/lib/ && \
   mkdir $($(package)_staging_dir)$(host_prefix)/include/ && \
-  cp $($(package)_library_file) $($(package)_staging_dir)$(host_prefix)/lib/ && \
+  cp $($(package)_library_file) $($(package)_staging_dir)$(host_prefix)/lib/librustzcash.a && \
   cp librustzcash/include/librustzcash.h $($(package)_staging_dir)$(host_prefix)/include/
 endef

src/Makefile.am

@@ -489,7 +489,7 @@ if TARGET_WINDOWS
 dragonxd_SOURCES += bitcoind-res.rc
 endif
 
-dragonxd_LDADD = \
+dragonxd_LDADD = $(LINK_GROUP_START) \
   $(LIBBITCOIN_SERVER) \
   $(LIBCURL) \
   $(LIBBITCOIN_COMMON) \
@@ -527,6 +527,8 @@ if TARGET_LINUX
 dragonxd_LDADD += libcc.so $(LIBSECP256K1)
 endif
 
+dragonxd_LDADD += $(LINK_GROUP_END)
+
 # [+] Decker: use static linking for libstdc++.6.dylib, libgomp.1.dylib, libgcc_s.1.dylib
 if TARGET_DARWIN
 dragonxd_LDFLAGS += -static-libgcc
@@ -553,7 +555,7 @@ if TARGET_WINDOWS
 dragonx_cli_SOURCES += bitcoin-cli-res.rc
 endif
 
-dragonx_cli_LDADD = \
+dragonx_cli_LDADD = $(LINK_GROUP_START) \
 	$(LIBBITCOIN_CLI) \
 	$(LIBUNIVALUE) \
 	$(LIBBITCOIN_UTIL) \
@@ -566,8 +568,10 @@ dragonx_cli_LDADD = \
 	$(LIBBITCOIN_CRYPTO) \
 	$(LIBZCASH_LIBS)
 
+dragonx_cli_LDADD += $(LINK_GROUP_END)
+
 if ENABLE_WALLET
-wallet_utility_LDADD = \
+wallet_utility_LDADD = $(LINK_GROUP_START) \
 	libbitcoin_wallet.a \
 	$(LIBBITCOIN_COMMON) \
 	$(LIBBITCOIN_CRYPTO) \
@@ -579,6 +583,7 @@ wallet_utility_LDADD = \
 	$(LIBZCASH) \
 	$(LIBZCASH_LIBS)\
     $(LIBRANDOMX)
+wallet_utility_LDADD += $(LINK_GROUP_END)
 endif
 
 # hush-tx binary #
@@ -591,7 +596,7 @@ if TARGET_WINDOWS
 dragonx_tx_SOURCES += bitcoin-tx-res.rc
 endif
 
-dragonx_tx_LDADD = \
+dragonx_tx_LDADD = $(LINK_GROUP_START) \
   $(LIBUNIVALUE) \
   $(LIBBITCOIN_COMMON) \
   $(LIBBITCOIN_UTIL) \
@@ -602,7 +607,7 @@ dragonx_tx_LDADD = \
   $(LIBZCASH_LIBS) \
   $(LIBRANDOMX)
 
-dragonx_tx_LDADD += $(BOOST_LIBS) $(CRYPTO_LIBS)
+dragonx_tx_LDADD += $(BOOST_LIBS) $(CRYPTO_LIBS) $(LINK_GROUP_END)
 
 # Zcash Protocol Primitives
 libzcash_a_SOURCES = \

src/addrman.cpp

@@ -473,11 +473,6 @@ CAddrInfo CAddrMan::Select_(bool newOnly)
     if (size() == 0)
         return CAddrInfo();
 
-    // Track number of attempts to find a table entry, before giving up to avoid infinite loop
-    const int kMaxRetries = 200000;         // magic number so unit tests can pass
-    const int kRetriesBetweenSleep = 1000;
-    const int kRetrySleepInterval = 100;    // milliseconds
-
     if (newOnly && nNew == 0)
         return CAddrInfo();
 
@@ -485,6 +480,32 @@ CAddrInfo CAddrMan::Select_(bool newOnly)
     if (!newOnly &&
        (nTried > 0 && (nNew == 0 || RandomInt(2) == 0))) {
         // use a tried node
+        return SelectFromTable_(vvTried, ADDRMAN_TRIED_BUCKET_COUNT, "tried");
+    } else {
+        // use a new node
+        return SelectFromTable_(vvNew, ADDRMAN_NEW_BUCKET_COUNT, "new");
+    }
+
+    return CAddrInfo();
+}
+
+// Random-walk one addrman bucket table (tried or new) and return an accepted peer,
+// applying the reachable/just-tried deprioritization and the growing chance factor.
+// Extracted verbatim from Select_'s two previously copy-pasted branches; the only
+// differences were the table (vvTried/vvNew), its bucket count, and the log label.
+CAddrInfo CAddrMan::SelectFromTable_(int (*vvTable)[ADDRMAN_BUCKET_SIZE], int nBucketCount, const char *tableName)
+{
+    // Track number of attempts to find a table entry, before giving up to avoid infinite loop
+    const int kMaxRetries = 200000;         // magic number so unit tests can pass
+    const int kRetriesBetweenSleep = 1000;
+    const int kRetrySleepInterval = 100;    // milliseconds
+
+    // Peer-selection tuning factors (networking heuristics, not consensus).
+    const double kChanceFactorGrowth = 1.2;
+    const double kUnreachableDeprioritize = 0.25;
+    const double kJustTriedDeprioritize = 0.10;
+    const int kChanceScale = 1 << 30;
+
     double fChanceFactor = 1.0;
     double fReachableFactor = 1.0;
     double fJustTried = 1.0;
@@ -493,79 +514,36 @@ CAddrInfo CAddrMan::Select_(bool newOnly)
             return CAddrInfo();
 
         int i = 0;
-            int nKBucket = RandomInt(ADDRMAN_TRIED_BUCKET_COUNT);
+        int nKBucket = RandomInt(nBucketCount);
         int nKBucketPos = RandomInt(ADDRMAN_BUCKET_SIZE);
-            while (vvTried[nKBucket][nKBucketPos] == -1) {
-                nKBucket = (nKBucket + insecure_rand()) % ADDRMAN_TRIED_BUCKET_COUNT;
+        while (vvTable[nKBucket][nKBucketPos] == -1) {
+            nKBucket = (nKBucket + insecure_rand()) % nBucketCount;
             nKBucketPos = (nKBucketPos + insecure_rand()) % ADDRMAN_BUCKET_SIZE;
             if (i++ > kMaxRetries)
                 return CAddrInfo();
             if (i % kRetriesBetweenSleep == 0 && !nKey.IsNull())
                 MilliSleep(kRetrySleepInterval);
         }
-            int nId = vvTried[nKBucket][nKBucketPos];
+        int nId = vvTable[nKBucket][nKBucketPos];
         // assert(mapInfo.count(nId) == 1);
         if(mapInfo.count(nId) != 1) {
-                fprintf(stderr,"%s: Could not find tried node with nId=%d=vvTried[%d][%d], mapInfo.count(%d)=%lu\n", __func__, nId, nKBucket, nKBucketPos, nId, mapInfo.count(nId) );
+            fprintf(stderr,"%s: Could not find %s node with nId=%d=vvTable[%d][%d], mapInfo.count(%d)=%lu\n", __func__, tableName, nId, nKBucket, nKBucketPos, nId, mapInfo.count(nId) );
             continue;
         }
 
         CAddrInfo& info = mapInfo[nId];
         if (info.IsReachableNetwork()) {
             //deprioritize unreachable networks
-                fReachableFactor = 0.25;
+            fReachableFactor = kUnreachableDeprioritize;
         }
         if (info.IsJustTried()) {
             //deprioritize entries just tried
-                fJustTried = 0.10;
+            fJustTried = kJustTriedDeprioritize;
         }
-            if (RandomInt(1 << 30) < fChanceFactor * fReachableFactor * fJustTried * info.GetChance() * (1 << 30))
+        if (RandomInt(kChanceScale) < fChanceFactor * fReachableFactor * fJustTried * info.GetChance() * kChanceScale)
             return info;
-            fChanceFactor *= 1.2;
+        fChanceFactor *= kChanceFactorGrowth;
     }
-    } else {
-        // use a new node
-        double fChanceFactor = 1.0;
-        double fReachableFactor = 1.0;
-        double fJustTried = 1.0;
-        while (1) {
-            if (ShutdownRequested()) //break loop on shutdown request
-                return CAddrInfo();
-
-            int i = 0;
-            int nUBucket = RandomInt(ADDRMAN_NEW_BUCKET_COUNT);
-            int nUBucketPos = RandomInt(ADDRMAN_BUCKET_SIZE);
-            while (vvNew[nUBucket][nUBucketPos] == -1) {
-                nUBucket = (nUBucket + insecure_rand()) % ADDRMAN_NEW_BUCKET_COUNT;
-                nUBucketPos = (nUBucketPos + insecure_rand()) % ADDRMAN_BUCKET_SIZE;
-                if (i++ > kMaxRetries)
-                    return CAddrInfo();
-                if (i % kRetriesBetweenSleep == 0 && !nKey.IsNull())
-                    MilliSleep(kRetrySleepInterval);
-            }
-            int nId = vvNew[nUBucket][nUBucketPos];
-
-            if(mapInfo.count(nId) != 1) {
-                fprintf(stderr,"%s: Could not find new node with nId=%d=vvNew[%d][%d], mapInfo.count(%d)=%lu\n", __func__, nId, nUBucket, nUBucketPos, nId, mapInfo.count(nId) );
-                continue;
-            }
-            // assert(mapInfo.count(nId) == 1);
-            CAddrInfo& info = mapInfo[nId];
-            if (info.IsReachableNetwork()) {
-                //deprioritize unreachable networks
-                fReachableFactor = 0.25;
-            }
-            if (info.IsJustTried()) {
-                //deprioritize entries just tried
-                fJustTried = 0.10;
-            }
-            if (RandomInt(1 << 30) < fChanceFactor * fReachableFactor * fJustTried * info.GetChance() * (1 << 30))
-                return info;
-            fChanceFactor *= 1.2;
-        }
-    }
-
-    return CAddrInfo();
 }
 
 #ifdef DEBUG_ADDRMAN

src/addrman.h

@@ -300,6 +300,10 @@ protected:
     //! Select an address to connect to, if newOnly is set to true, only the new table is selected from.
     CAddrInfo Select_(bool newOnly);
 
+    //! Random-walk one bucket table (tried or new) and return an accepted peer.
+    //! Shared implementation for Select_'s two (previously copy-pasted) branches.
+    CAddrInfo SelectFromTable_(int (*vvTable)[ADDRMAN_BUCKET_SIZE], int nBucketCount, const char *tableName);
+
     //! Wraps GetRandInt to allow tests to override RandomInt and make it deterministic.
     virtual int RandomInt(int nMax);
 

src/asyncrpcoperation.cpp

@@ -18,6 +18,7 @@
  ******************************************************************************/
 
 #include "asyncrpcoperation.h"
+#include <stdexcept>
 
 #include <boost/uuid/uuid.hpp>
 #include <boost/uuid/uuid_generators.hpp>
@@ -58,6 +59,31 @@ AsyncRPCOperation::AsyncRPCOperation(const AsyncRPCOperation& o) :
 {
 }
 
+// Shared error mapping for every async op's main(): rethrow the in-flight
+// exception and translate it to this operation's error code/message. Keeping
+// it here means the mapping is edited in one place, not copy-pasted into six.
+void AsyncRPCOperation::set_error_from_current_exception()
+{
+    try {
+        throw;
+    } catch (const UniValue& objError) {
+        set_error_code(find_value(objError, "code").get_int());
+        set_error_message(find_value(objError, "message").get_str());
+    } catch (const runtime_error& e) {
+        set_error_code(-1);
+        set_error_message("runtime error: " + string(e.what()));
+    } catch (const logic_error& e) {
+        set_error_code(-1);
+        set_error_message("logic error: " + string(e.what()));
+    } catch (const exception& e) {
+        set_error_code(-1);
+        set_error_message("general exception: " + string(e.what()));
+    } catch (...) {
+        set_error_code(-2);
+        set_error_message("unknown error");
+    }
+}
+
 AsyncRPCOperation& AsyncRPCOperation::operator=( const AsyncRPCOperation& other ) {
     this->id_ = other.id_;
     this->creation_time_ = other.creation_time_;

src/asyncrpcoperation.h

@@ -148,6 +148,11 @@ protected:
         this->error_message_ = errorMessage;
     }
 
+    // Map the in-flight (rethrown) exception to error_code_/error_message_. Called from
+    // every async op's main() catch(...) so the UniValue/runtime/logic/exception mapping
+    // lives in one place instead of being copy-pasted into all six operations.
+    void set_error_from_current_exception();
+    
     void set_result(UniValue v) {
         std::lock_guard<std::mutex> guard(lock_);
         this->result_ = v;

src/cc/CCinclude.h

@@ -41,7 +41,11 @@
 
 /// \cond INTERNAL
 #define CC_MAXVINS 1024
-#define CC_REQUIREMENTS_MSG (HUSH_NSPV_SUPERLITE?"to use CC contracts you need to nspv_login first\n":"to use CC contracts, you need to launch daemon with valid -pubkey= for an address in your wallet\n")
+// NOTE: CryptoConditions (CC) contracts are inherited from the Komodo/Hush lineage and are
+// largely vestigial on DragonX (ac_private=1 fully-shielded chain). This user-facing message
+// still describes the legacy prerequisites for using CC contracts (nspv_login in superlite
+// mode, or launching dragonxd with a valid -pubkey=).
+#define CC_REQUIREMENTS_MSG (HUSH_NSPV_SUPERLITE?"to use CC contracts you need to nspv_login first\n":"to use CC contracts, you need to launch dragonxd with valid -pubkey= for an address in your wallet\n")
 
 #define SMALLVAL 0.000000000000001
 #define SATOSHIDEN ((uint64_t)100000000L)
@@ -58,7 +62,8 @@ struct CC_utxo
 /// \endcond
 
 
-/// CC contract (Antara module) info structure that contains data used for signing and validation of cc contract transactions
+/// CC (CryptoConditions) contract info structure that contains data used for signing and validation of cc contract transactions.
+/// NOTE: the CC framework (historically called "Antara modules" in the Komodo/Hush lineage) is largely vestigial on DragonX.
 struct CCcontract_info
 {
     uint8_t evalcode;  //!< cc contract eval code, set by CCinit function
@@ -101,7 +106,7 @@ struct CCcontract_info
     bool(*validate)(struct CCcontract_info *cp, Eval* eval, const CTransaction &tx, uint32_t nIn);
 
     /// checks if the value of evalcode in cp object is present in the scriptSig parameter, 
-    /// that is, the vin for this scriptSig will be validated by the cc contract (Antara module) defined by the eval code in this CCcontract_info object
+    /// that is, the vin for this scriptSig will be validated by the cc contract defined by the eval code in this CCcontract_info object
     /// @param scriptSig scriptSig to check\n
     /// Example:
     /// \code
@@ -283,7 +288,7 @@ bool ExtractTokensCCVinPubkeys(const CTransaction &tx, std::vector<CPubKey> &vin
 /// cp = CCinit(&C, EVAL_ASSETS);
 /// CPubKey ccAssetsPk = GetUnspendable(cp, ccAssetsPriv);
 /// \endcode
-/// Now ccAssetsPk has Antara 'Assets' module global pubkey and ccAssetsPriv has its publicly available private key
+/// Now ccAssetsPk has the 'Assets' CC module global pubkey and ccAssetsPriv has its publicly available private key
 CPubKey GetUnspendable(struct CCcontract_info *cp,uint8_t *unspendablepriv);
 
 // CCutils
@@ -373,7 +378,7 @@ int64_t CCfullsupply(uint256 tokenid);
 /// @returns true if success
 bool Getscriptaddress(char *destaddr,const CScript &scriptPubKey);
 
-/// Returns my pubkey, that is set by -pubkey hushd parameter
+/// Returns my pubkey, that is set by the -pubkey dragonxd parameter
 /// @returns public key as byte array
 std::vector<uint8_t> Mypubkey();
 
@@ -404,8 +409,8 @@ extern std::vector<CPubKey> NULL_pubkeys; //!< constant value for use in functio
 std::string FinalizeCCTx(uint64_t skipmask,struct CCcontract_info *cp,CMutableTransaction &mtx,CPubKey mypk,uint64_t txfee,CScript opret,std::vector<CPubKey> pubkeys = NULL_pubkeys);
 
 /// FinalizeCCTx is a very useful function that will properly sign both CC and normal inputs, adds normal change and might add an opreturn output.
-/// This allows for Antara module transaction creation rpc functions to create an CMutableTransaction object, add the appropriate vins and vouts to it and use FinalizeCCTx to properly sign the transaction.
-/// By using -addressindex=1 of hushd daemon, it allows tracking of all the CC addresses.
+/// This allows for CC module transaction creation rpc functions to create an CMutableTransaction object, add the appropriate vins and vouts to it and use FinalizeCCTx to properly sign the transaction.
+/// By using -addressindex=1 of the dragonxd daemon, it allows tracking of all the CC addresses.
 ///
 /// For signing the vins the function builds several default probe scriptPubKeys and checks them against the referred previous transactions (vintx) vouts.
 /// For cryptocondition vins the function creates a basic set of probe cryptconditions with mypk and module global pubkey, both for coins and tokens cases.
@@ -473,7 +478,7 @@ int64_t AddNormalinputs(CMutableTransaction &mtx,CPubKey mypk,int64_t total,int3
 int64_t AddNormalinputsLocal(CMutableTransaction &mtx,CPubKey mypk,int64_t total,int32_t maxinputs);
 
 /// AddNormalinputs2 adds normal (not cc) inputs to the transaction object vin array for the specified total amount using utxos on my pubkey's TX_PUBKEY address (my pubkey is set by -pubkey command line parameter), to fund the transaction.
-/// 'My pubkey' is the -pubkey parameter of hushd.
+/// 'My pubkey' is the -pubkey parameter of dragonxd.
 /// @param mtx mutable transaction object
 /// @param total amount of inputs to add. If total equals to 0 the function does not add inputs but returns amount of all available normal inputs in the wallet
 /// @param maxinputs maximum number of inputs to add

src/cc/CCtx.cpp

@@ -72,11 +72,6 @@ int32_t CC_vinselect(int32_t *aboveip,int64_t *abovep,int32_t *belowip,int64_t *
     abovei = belowi = -1;
     for (above=below=i=0; i<numunspents; i++)
     {
-        // Filter to randomly pick utxo to avoid conflicts, and having multiple CC choose the same ones.
-        //if ( numunspents > 200 ) {
-        //    if ( (rand() % 100) < 90 )
-        //        continue;
-        //}
         if ( (atx_value= utxos[i].nValue) <= 0 )
             continue;
         if ( atx_value == value )
@@ -103,13 +98,11 @@ int32_t CC_vinselect(int32_t *aboveip,int64_t *abovep,int32_t *belowip,int64_t *
                 belowi = i;
             }
         }
-        //printf("value %.8f gap %.8f abovei.%d %.8f belowi.%d %.8f\n",dstr(value),dstr(gap),abovei,dstr(above),belowi,dstr(below));
     }
     *aboveip = abovei;
     *abovep = above;
     *belowip = belowi;
     *belowp = below;
-    //printf("above.%d below.%d\n",abovei,belowi);
     if ( abovei >= 0 && belowi >= 0 )
     {
         if ( above < (below >> 1) )
@@ -127,8 +120,6 @@ int64_t AddNormalinputsLocal(CMutableTransaction &mtx,CPubKey mypk,int64_t total
     if ( HUSH_NSPV_SUPERLITE )
         return(NSPV_AddNormalinputs(mtx,mypk,total,maxinputs,&NSPV_U));
 
-    // if (mypk != pubkey2pk(Mypubkey()))  //remote superlite mypk, do not use wallet since it is not locked for non-equal pks (see rpcs with nspv support)!
-    //     return(AddNormalinputs3(mtx, mypk, total, maxinputs));
 
 #ifdef ENABLE_WALLET
     assert(pwalletMain != NULL);
@@ -150,7 +141,6 @@ int64_t AddNormalinputsLocal(CMutableTransaction &mtx,CPubKey mypk,int64_t total
             vout = out.i;
             if ( myGetTransaction(txid,tx,hashBlock) != 0 && tx.vout.size() > 0 && vout < tx.vout.size() && tx.vout[vout].scriptPubKey.IsPayToCryptoCondition() == 0 )
             {
-                //fprintf(stderr,"check %.8f to vins array.%d of %d %s/v%d\n",(double)out.tx->vout[out.i].nValue/COIN,n,maxutxos,txid.GetHex().c_str(),(int32_t)vout);
                 if ( mtx.vin.size() > 0 )
                 {
                     for (i=0; i<mtx.vin.size(); i++)
@@ -174,7 +164,6 @@ int64_t AddNormalinputsLocal(CMutableTransaction &mtx,CPubKey mypk,int64_t total
                     up->nValue = out.tx->vout[out.i].nValue;
                     up->vout = vout;
                     sum += up->nValue;
-                    //fprintf(stderr,"add %.8f to vins array.%d of %d\n",(double)up->nValue/COIN,n,maxutxos);
                     if ( n >= maxinputs || sum >= total )
                         break;
                 }
@@ -207,14 +196,12 @@ int64_t AddNormalinputsLocal(CMutableTransaction &mtx,CPubKey mypk,int64_t total
         remains -= up->nValue;
         utxos[ind] = utxos[--n];
         memset(&utxos[n],0,sizeof(utxos[n]));
-        //fprintf(stderr,"totalinputs %.8f vs total %.8f i.%d vs max.%d\n",(double)totalinputs/COIN,(double)total/COIN,i,maxinputs);
         if ( totalinputs >= total || (i+1) >= maxinputs )
             break;
     }
     free(utxos);
     if ( totalinputs >= total )
     {
-        //fprintf(stderr,"return totalinputs %.8f\n",(double)totalinputs/COIN);
         return(totalinputs);
     }
 #endif
@@ -252,7 +239,6 @@ int64_t AddNormalinputsRemote(CMutableTransaction &mtx, CPubKey mypk, int64_t to
             continue;
         if ( myGetTransaction(txid,tx,hashBlock) != 0 && tx.vout.size() > 0 && vout < tx.vout.size() && tx.vout[vout].scriptPubKey.IsPayToCryptoCondition() == 0 )
         {
-            //fprintf(stderr,"check %.8f to vins array.%d of %d %s/v%d\n",(double)out.tx->vout[out.i].nValue/COIN,n,maxutxos,txid.GetHex().c_str(),(int32_t)vout);
             if ( mtx.vin.size() > 0 )
             {
                 for (i=0; i<mtx.vin.size(); i++)
@@ -276,7 +262,6 @@ int64_t AddNormalinputsRemote(CMutableTransaction &mtx, CPubKey mypk, int64_t to
                 up->nValue = it->second.satoshis;
                 up->vout = vout;
                 sum += up->nValue;
-                //fprintf(stderr,"add %.8f to vins array.%d of %d\n",(double)up->nValue/COIN,n,maxutxos);
                 if ( n >= maxinputs || sum >= total )
                     break;
             }
@@ -308,14 +293,12 @@ int64_t AddNormalinputsRemote(CMutableTransaction &mtx, CPubKey mypk, int64_t to
         remains -= up->nValue;
         utxos[ind] = utxos[--n];
         memset(&utxos[n],0,sizeof(utxos[n]));
-        //fprintf(stderr,"totalinputs %.8f vs total %.8f i.%d vs max.%d\n",(double)totalinputs/COIN,(double)total/COIN,i,maxinputs);
         if ( totalinputs >= total || (i+1) >= maxinputs )
             break;
     }
     free(utxos);
     if ( totalinputs >= total )
     {
-        //fprintf(stderr,"return totalinputs %.8f\n",(double)totalinputs/COIN);
         return(totalinputs);
     }
     return(0);

src/cc/CCutils.cpp

@@ -20,6 +20,7 @@
 #include "CCinclude.h"
 #include "hush_structs.h"
 #include "key_io.h"
+#include "util.h"
 
 #ifdef TESTMODE           
     #define MIN_NON_NOTARIZED_CONFIRMS 2
@@ -46,7 +47,6 @@ int32_t has_opret(const CTransaction &tx, uint8_t evalcode)
     int i = 0;
     for ( auto vout : tx.vout )
     {
-        //fprintf(stderr, "[txid.%s] 1.%i 2.%i 3.%i 4.%i\n",tx.GetHash().GetHex().c_str(),  vout.scriptPubKey[0], vout.scriptPubKey[1], vout.scriptPubKey[2], vout.scriptPubKey[3]);
         if ( vout.scriptPubKey.size() > 3 && vout.scriptPubKey[0] == OP_RETURN && vout.scriptPubKey[2] == evalcode )
             return i;
         i++;
@@ -88,7 +88,6 @@ bool CheckTxFee(const CTransaction &tx, uint64_t txfee, uint32_t height, uint64_
     actualtxfee = valuein-tx.GetValueOut();
     if ( actualtxfee > txfee )
     {
-        //fprintf(stderr, "actualtxfee.%li vs txfee.%li\n", actualtxfee, txfee);
         return false;
     }
     return true;
@@ -112,7 +111,6 @@ bool Getscriptaddress(char *destaddr,const CScript &scriptPubKey)
             return(true);
         }
     }
-    //fprintf(stderr,"ExtractDestination failed\n");
     return(false);
 }
 
@@ -202,17 +200,17 @@ bool hush_txnotarizedconfirmed(uint256 txid)
     {
         if ( NSPV_myGetTransaction(txid,tx,hashBlock,txheight,currentheight) == 0 )
         {
-            fprintf(stderr,"hush_txnotarizedconfirmed cant find txid %s\n",txid.ToString().c_str());
+            LogPrintf("hush_txnotarizedconfirmed cant find txid %s\n",txid.ToString().c_str());
             return(0);
         }
         else if (txheight<=0)
         {
-            fprintf(stderr,"hush_txnotarizedconfirmed no txheight.%d for txid %s\n",txheight,txid.ToString().c_str());
+            LogPrintf("hush_txnotarizedconfirmed no txheight.%d for txid %s\n",txheight,txid.ToString().c_str());
             return(0);
         }
         else if (txheight>currentheight)
         {
-            fprintf(stderr,"hush_txnotarizedconfirmed backwards heights for txid %s hts.(%d %d)\n",txid.ToString().c_str(),txheight,currentheight);
+            LogPrintf("hush_txnotarizedconfirmed backwards heights for txid %s hts.(%d %d)\n",txid.ToString().c_str(),txheight,currentheight);
             return(0);
         }
         confirms=1 + currentheight - txheight;
@@ -221,22 +219,22 @@ bool hush_txnotarizedconfirmed(uint256 txid)
     {
         if ( myGetTransaction(txid,tx,hashBlock) == 0 )
         {
-            fprintf(stderr,"hush_txnotarizedconfirmed cant find txid %s\n",txid.ToString().c_str());
+            LogPrintf("hush_txnotarizedconfirmed cant find txid %s\n",txid.ToString().c_str());
             return(0);
         }
         else if ( hashBlock == zeroid )
         {
-            fprintf(stderr,"hush_txnotarizedconfirmed no hashBlock for txid %s\n",txid.ToString().c_str());
+            LogPrintf("hush_txnotarizedconfirmed no hashBlock for txid %s\n",txid.ToString().c_str());
             return(0);
         }
         else if ( (pindex= hush_blockindex(hashBlock)) == 0 || (txheight= pindex->GetHeight()) <= 0 )
         {
-            fprintf(stderr,"hush_txnotarizedconfirmed no txheight.%d %p for txid %s\n",txheight,pindex,txid.ToString().c_str());
+            LogPrintf("hush_txnotarizedconfirmed no txheight.%d %p for txid %s\n",txheight,pindex,txid.ToString().c_str());
             return(0);
         }
         else if ( (pindex= chainActive.LastTip()) == 0 || pindex->GetHeight() < txheight )
         {
-            fprintf(stderr,"hush_txnotarizedconfirmed backwards heights for txid %s hts.(%d %d)\n",txid.ToString().c_str(),txheight,(int32_t)pindex->GetHeight());
+            LogPrintf("hush_txnotarizedconfirmed backwards heights for txid %s hts.(%d %d)\n",txid.ToString().c_str(),txheight,(int32_t)pindex->GetHeight());
             return(0);
         }
         confirms=1 + pindex->GetHeight() - txheight;

src/cc/cclib.cpp

@@ -25,7 +25,6 @@
 #include "main.h"
 #include "chain.h"
 #include "core_io.h"
-#define FAUCET2SIZE COIN
 #define EVAL_FAUCET2 EVAL_FIRSTUSER
 
 #ifdef BUILD_CUSTOMCC

src/cc/dapps/Makefile

@@ -1,20 +0,0 @@
-# Copyright (c) 2016-2024 The Hush Developers
-# Distributed under the GPLv3 software license, see the accompanying
-# file COPYING or https://www.gnu.org/licenses/gpl-3.0.en.html
-# Just type make to compile all dat dapp code, fellow cypherpunkz
-
-# we no longer build zmigrate by default, nobody uses that fucking code
-all: hushdex
-
-hushdex:
-	$(CC) hushdex.c -o hushdex -lm
-
-# Just for historical knowledge, to study how fucking stupid
-# ZEC+KMD were to still support sprout, to this day!!!!!!!!
-# Hush leads the entire world into the future, sans Sprout turdz
-zmigrate:
-	$(CC) zmigrate.c -o zmigrate -lm
-
-clean:
-	rm zmigrate
-

src/cc/dapps/README.md

@@ -1,72 +0,0 @@
-# CryptoCondition dApps
-
-## Compiling
-
-To compile all dapps in this directory:
-
-    make
-
-## zmigrate - Sprout to Sapling Migration dApp
-
-This tool converts Sprout zaddress funds into Sapling funds in a new Sapling address.
-This is not applicable to HUSH3, since we have no Sprout funds, but left for historical
-purposes.
-
-### Usage
-
-    ./zmigrate COIN zsaplingaddr
-
-The above command may need to be run multiple times to complete the process.
-
-This CLI implementation will be called by GUI wallets, average users do not
-need to worry about using this low-level tool.
-
-## HushDEX
-
-HushDEX forked from the Subatomic Decentralized App (dapp) and we focus purely
-on privacy coin swaps, and specifically, shielded swaps between Zcash Protocol
-coins. These are called z-swaps.
-
-### Z-swap example
-
-Alice has 1 ZEC and wants to trade it for 5 HUSH, since she hears HushChat is
-pretty awesome and ZEC just goes down in price, always. We represent this in
-a diagram like this
-
-    Alice (ZEC) <> Bob (HUSH)
-
-HushDEX is only concerns with Sapling shielded addresses (zaddrs) which start
-with `zs1`. Even though ZEC supports Sprout addresses (which start with `zc`),
-they cannot be used on HushDEX. Sprout is unsupported on HushDEX.
-
-So Alice must make sure her ZEC is in a Sapling zaddr, and then she can use
-HushDEX on her computer, to z-swap with Bob, in a decentralized way, with
-no centralized service. The system is not completely trustless, users must
-trust the developers and miners on the relevant chains to not do nefarious
-things. There is no central authority to decide who gets to do what, it's
-peer-to-peer like BitTorrent or Tor.
-
-### Privacy Features of Z-Swaps
-
-  * No KYC
-    * We will not feed the identity theft industry any more free data
-  * No IP address limiting
-    * It is trivial to pay for an IP address from any country in the world
-  * Alice's address never appears in public data
-  * Bob's address never appears in public data
-  * Consequently, Alice and Bob's address cannot be searched for on an explorer
-  * Since you can't see the address of any transaction, you cannot infer if
-    the same address appears as sender or receiver in many transactions.
-  * The amount of the transaction, how much ZEC and how much HUSH, is unknown
-    * It could be pennies or millions
-  * The exchange rate of the transaction never appears on the blockchain
-    * The exchange rate will be leaked to the network p2p layer, but it is never
-      recorded in blockchain history. If you are not there to record it, it is gone.
-    * Realistically, it's simple to run a malicious node which records all exchange rates
-      and so we assume an adversary does this
-    * Since the exchange rate of ZEC/HUSH is already public data, this is not considered valuable
-      information leakage. We are leaking the differential of CEX ZEC/HUSH exchange ratio to
-      this DEX's ratio.
-    * Adversaries watching all possible public data can infer exchange ratios but no amounts
-      or addresses, which is considered a massive blow against blockchain analysis.
-

src/cc/dapps/hushdex.json

@@ -1,19 +0,0 @@
-{
-"authorized": [
-    {"dukeleto":"030554bffcf6dfcb34a20c486ff0a5be5546b9cc16fba969216527263f8e98c4af" },
-    {"gilardh":"020554bffcf6dfcb34a20c486ff5a5be5546b9cc06fba9692165272b3f8e98c448" },
-    {"nhdigitalcash":"030554bffcf6dfcb34a20c086ff5a5be5546b9cc16fba9692105272b3f8e98c4a0" },
-    {"miodrag":"02b25de3ee5335518b06f69f4fbabb029cfc737603b100996841d5532b324a5a61" }
-],
-"tokens":[
-],
-"files":[
-    {"filename":"hushd","prices":[{"HUSH":0.1}, {"ZEC":1}]}
-],
-"externalcoins":[
-    { "BTC":"bitcoin-cli" },
-    { "HUSH":"hush-cli" },
-    { "ZEC":"zcash-cli" }
-]
-}
-

src/cc/dapps/makedapps

@@ -1,2 +0,0 @@
-gcc -o oraclefeed cc/dapps/oraclefeed.c -lm
-gcc -o zmigrate cc/dapps/zmigrate.c -lm

src/cc/eval.h

@@ -80,21 +80,6 @@ public:
     bool Error(std::string s) { return state.Error(s); }
     bool Valid() { return true; }
 
-    /*
-     * Dispute a payout using a VM
-     */
-    bool DisputePayout(AppVM &vm, std::vector<uint8_t> params, const CTransaction &disputeTx, unsigned int nIn);
-
-    /*
-     * Test an ImportPayout CC Eval condition
-     */
-    bool ImportPayout(std::vector<uint8_t> params, const CTransaction &importTx, unsigned int nIn);
-
-    /*
-     * Import coin from another chain with same symbol
-     */
-    bool ImportCoin(std::vector<uint8_t> params, const CTransaction &importTx, unsigned int nIn);
-
     /*
      * IO functions
      */
@@ -281,7 +266,6 @@ typedef std::pair<uint256,MerkleBranch> TxProof;
 
 uint256 GetMerkleRoot(const std::vector<uint256>& vLeaves);
 struct CCcontract_info *CCinit(struct CCcontract_info *cp,uint8_t evalcode);
-bool ProcessCC(struct CCcontract_info *cp,Eval* eval, std::vector<uint8_t> paramsNull, const CTransaction &tx, unsigned int nIn);
 
 
 #endif /* CC_EVAL_H */

src/chainparams.cpp

@@ -148,6 +148,12 @@ public:
         nMinerThreads      = 0;
         nMaxTipAge         = 24 * 60 * 60;
         nPruneAfterHeight  = 100000;
+        // NOTE: These Equihash parameters and the literal Bitcoin genesis block below are
+        // inherited from the upstream (Zcash/Komodo) CMainParams and are NOT what DragonX
+        // mines under. DragonX is a RandomX CPU-mining chain whose real PoW and chain
+        // parameters are set for its SMART_CHAIN_SYMBOL at runtime (see hush_utils.h and
+        // chainparams_commandline()). They are retained here for upstream-diff hygiene and
+        // genesis fixity; do not "fix" them to RandomX values.
         const size_t N = 200, K = 9;
         BOOST_STATIC_ASSERT(equihash_parameters_acceptable(N, K));
         nEquihashN = N;
@@ -533,9 +539,7 @@ void hush_setactivation(int32_t height)
 
 void *chainparams_commandline() {
     CChainParams::CCheckpointData checkpointData;
-    //if(fDebug) {
-        fprintf(stderr,"chainparams_commandline called with port=%u\n", ASSETCHAINS_P2PPORT);
-    //}
+    LogPrint("net", "chainparams_commandline called with port=%u\n", ASSETCHAINS_P2PPORT);
     if ( SMART_CHAIN_SYMBOL[0] != 0 )
     {
         // A smart chain inherits vSeeds/vFixedSeeds from the base network params,
@@ -552,7 +556,7 @@ void *chainparams_commandline() {
             ASSETCHAINS_P2PPORT = 18030;
         }
 
-        if (strncmp(SMART_CHAIN_SYMBOL, "DRAGONX", 7) != 0) {
+        if (strcmp(SMART_CHAIN_SYMBOL, "DRAGONX") != 0) {
             pCurrentParams->ClearSeeds();
         }
 
@@ -579,7 +583,7 @@ void *chainparams_commandline() {
         pCurrentParams->pchMessageStart[1] = (ASSETCHAINS_MAGIC >> 8) & 0xff;
         pCurrentParams->pchMessageStart[2] = (ASSETCHAINS_MAGIC >> 16) & 0xff;
         pCurrentParams->pchMessageStart[3] = (ASSETCHAINS_MAGIC >> 24) & 0xff;
-        fprintf(stderr,">>>>>>>>>> %s: p2p.%u rpc.%u magic.%08x %u %u coins\n",SMART_CHAIN_SYMBOL,ASSETCHAINS_P2PPORT,ASSETCHAINS_RPCPORT,ASSETCHAINS_MAGIC,ASSETCHAINS_MAGIC,(uint32_t)ASSETCHAINS_SUPPLY);
+        LogPrintf("%s: p2p port %u, rpc port %u, magic %08x, supply %u coins\n",SMART_CHAIN_SYMBOL,ASSETCHAINS_P2PPORT,ASSETCHAINS_RPCPORT,ASSETCHAINS_MAGIC,(uint32_t)ASSETCHAINS_SUPPLY);
 
         pCurrentParams->consensus.vUpgrades[Consensus::UPGRADE_SAPLING].nActivationHeight = ASSETCHAINS_SAPLING;
         pCurrentParams->consensus.vUpgrades[Consensus::UPGRADE_OVERWINTER].nActivationHeight = ASSETCHAINS_OVERWINTER;

src/coins.cpp

@@ -214,19 +214,6 @@ void CCoinsViewCache::AbstractPushAnchor(
     }
 }
 
-//TODO: delete
-/*
-template<> void CCoinsViewCache::PushAnchor(const SproutMerkleTree &tree)
-{
-    AbstractPushAnchor<SproutMerkleTree, CAnchorsSproutMap, CAnchorsSproutMap::iterator, CAnchorsSproutCacheEntry>(
-        tree,
-        SPROUT,
-        cacheSproutAnchors,
-        hashSproutAnchor
-    );
-}
-*/
-
 template<> void CCoinsViewCache::PushAnchor(const SaplingMerkleTree &tree)
 {
     AbstractPushAnchor<SaplingMerkleTree, CAnchorsSaplingMap, CAnchorsSaplingMap::iterator, CAnchorsSaplingCacheEntry>(
@@ -406,8 +393,6 @@ void CCoinsViewCache::SetBestBlock(const uint256 &hashBlockIn) {
 
 void BatchWriteNullifiers(CNullifiersMap &mapNullifiers, CNullifiersMap &cacheNullifiers)
 {
-    //if(fZdebug)
-    //    LogPrintf("%s\n", __FUNCTION__);
     for (CNullifiersMap::iterator child_it = mapNullifiers.begin(); child_it != mapNullifiers.end();) {
         if (child_it->second.flags & CNullifiersCacheEntry::DIRTY) { // Ignore non-dirty entries (optimization).
             CNullifiersMap::iterator parent_it = cacheNullifiers.find(child_it->first);
@@ -531,10 +516,7 @@ unsigned int CCoinsViewCache::GetCacheSize() const {
 const CTxOut &CCoinsViewCache::GetOutputFor(const CTxIn& input) const
 {
     const CCoins* coins = AccessCoins(input.prevout.hash);
-    //fprintf(stderr, "GetOutputFor: input=%s", input.ToString().c_str());
-    //fprintf(stderr, "GetOutputFor: prevout n=%d,txid=%s\n", input.prevout.n, input.prevout.hash.ToString().c_str());
     assert(coins && coins->IsAvailable(input.prevout.n));
-    //fprintf(stderr, "GetOutputFor: IsAvailable\n");
     return coins->vout[input.prevout.n];
 }
 
@@ -596,7 +578,6 @@ bool CCoinsViewCache::HaveInputs(const CTransaction& tx) const
             const COutPoint &prevout = tx.vin[i].prevout;
             const CCoins* coins = AccessCoins(prevout.hash);
             if (!coins || !coins->IsAvailable(prevout.n)) {
-                //fprintf(stderr,"HaveInputs missing input %s/v%d\n",prevout.hash.ToString().c_str(),prevout.n);
                 return false;
             }
         }

src/consensus/upgrades.cpp

@@ -63,10 +63,6 @@ UpgradeState NetworkUpgradeState(
     const Consensus::Params& params,
     Consensus::UpgradeIndex idx)
 {
-    if (nHeight < 0)
-    {
-        printf("height: %d", nHeight);
-    }
     assert(nHeight >= 0);
     assert(idx >= Consensus::BASE_SPROUT && idx < Consensus::MAX_NETWORK_UPGRADES);
     auto nActivationHeight = params.vUpgrades[idx].nActivationHeight;

src/crosschain.cpp

@@ -41,7 +41,9 @@
 // XXX: There are potential crashes wherever we access chainActive without a lock,
 // because it might be disconnecting blocks at the same time.
 // TODO: this assumes a blocktime of 75 seconds for HUSH and 60 seconds for other chains
-int NOTARISATION_SCAN_LIMIT_BLOCKS = strncmp(SMART_CHAIN_SYMBOL, "HUSH3",5) == 0 ? 1152 : 1440;
+// DragonX: the HUSH3 (1152) branch is dead — SMART_CHAIN_SYMBOL is always "DRAGONX", and at
+// static-init time it is empty, so this already always resolved to 1440. Pinned to 1440.
+int NOTARISATION_SCAN_LIMIT_BLOCKS = 1440;
 CBlockIndex *hush_getblockindex(uint256 hash);
 
 /* On HUSH */

src/hush.h

@@ -95,7 +95,6 @@ int32_t hush_parsestatefile(struct hush_state *sp,FILE *fp,char *symbol,char *de
                     errs++;
                 else
                 {
-                    //printf("updated %d pubkeys at %s ht.%d\n",num,symbol,ht);
                     if ( (HUSH_EXTERNAL_NOTARIES != 0 && matched != 0) )
                         hush_eventadd_pubkeys(sp,symbol,ht,num,pubkeys);
                 }
@@ -131,7 +130,6 @@ int32_t hush_parsestatefile(struct hush_state *sp,FILE *fp,char *symbol,char *de
             uint8_t n,nid; uint256 hash; uint64_t mask;
             n = fgetc(fp);
             nid = fgetc(fp);
-            //printf("U %d %d\n",n,nid);
             if ( fread(&mask,1,sizeof(mask),fp) != sizeof(mask) )
                 errs++;
             if ( fread(&hash,1,sizeof(hash),fp) != sizeof(hash) )
@@ -145,7 +143,6 @@ int32_t hush_parsestatefile(struct hush_state *sp,FILE *fp,char *symbol,char *de
             if ( fread(&kheight,1,sizeof(kheight),fp) != sizeof(kheight) )
                 errs++;
             //if ( matched != 0 ) global independent states -> inside *sp
-            //printf("%s.%d load[%s] ht.%d\n",SMART_CHAIN_SYMBOL,ht,symbol,kheight);
             hush_eventadd_hushheight(sp,symbol,ht,kheight,0);
         }
         else if ( func == 'T' )
@@ -156,7 +153,6 @@ int32_t hush_parsestatefile(struct hush_state *sp,FILE *fp,char *symbol,char *de
             if ( fread(&ktimestamp,1,sizeof(ktimestamp),fp) != sizeof(ktimestamp) )
                 errs++;
             //if ( matched != 0 ) global independent states -> inside *sp
-            //printf("%s.%d load[%s] ht.%d t.%u\n",SMART_CHAIN_SYMBOL,ht,symbol,kheight,ktimestamp);
             hush_eventadd_hushheight(sp,symbol,ht,kheight,ktimestamp);
         }
         else if ( func == 'R' )
@@ -186,7 +182,6 @@ int32_t hush_parsestatefile(struct hush_state *sp,FILE *fp,char *symbol,char *de
                 int32_t i;
                 for (i=0; i<olen; i++)
                     fgetc(fp);
-                //printf("illegal olen.%u\n",olen);
             }
         }
         else if ( func == 'D' )
@@ -200,9 +195,7 @@ int32_t hush_parsestatefile(struct hush_state *sp,FILE *fp,char *symbol,char *de
             if ( numpvals*sizeof(uint32_t) <= sizeof(pvals) && fread(pvals,sizeof(uint32_t),numpvals,fp) == numpvals )
             {
                 //if ( matched != 0 ) global shared state -> global PVALS
-                //printf("%s load[%s] prices %d\n",SMART_CHAIN_SYMBOL,symbol,ht);
                 hush_eventadd_pricefeed(sp,symbol,ht,pvals,numpvals);
-                //printf("load pvals ht.%d numpvals.%d\n",ht,numpvals);
             } else printf("error loading pvals[%d]\n",numpvals);
         } // else printf("[%s] %s illegal func.(%d %c)\n",SMART_CHAIN_SYMBOL,symbol,func,func);
         return(func);
@@ -239,7 +232,6 @@ int32_t hush_parsestatefiledata(struct hush_state *sp,uint8_t *filedata,long *fp
                     errs++;
                 else
                 {
-                    //printf("updated %d pubkeys at %s ht.%d\n",num,symbol,ht);
                     if ( (HUSH_EXTERNAL_NOTARIES != 0 && matched != 0) )
                         hush_eventadd_pubkeys(sp,symbol,ht,num,pubkeys);
                 }
@@ -274,7 +266,6 @@ int32_t hush_parsestatefiledata(struct hush_state *sp,uint8_t *filedata,long *fp
             uint8_t n,nid; uint256 hash; uint64_t mask;
             n = filedata[fpos++];
             nid = filedata[fpos++];
-            //printf("U %d %d\n",n,nid);
             if ( memread(&mask,sizeof(mask),filedata,&fpos,datalen) != sizeof(mask) )
                 errs++;
             if ( memread(&hash,sizeof(hash),filedata,&fpos,datalen) != sizeof(hash) )
@@ -295,7 +286,6 @@ int32_t hush_parsestatefiledata(struct hush_state *sp,uint8_t *filedata,long *fp
             if ( memread(&ktimestamp,sizeof(ktimestamp),filedata,&fpos,datalen) != sizeof(ktimestamp) )
                 errs++;
             //if ( matched != 0 ) global independent states -> inside *sp
-            //printf("%s.%d load[%s] ht.%d t.%u\n",SMART_CHAIN_SYMBOL,ht,symbol,kheight,ktimestamp);
             hush_eventadd_hushheight(sp,symbol,ht,kheight,ktimestamp);
         }
         else if ( func == 'R' )
@@ -325,7 +315,6 @@ int32_t hush_parsestatefiledata(struct hush_state *sp,uint8_t *filedata,long *fp
                 int32_t i;
                 for (i=0; i<olen; i++)
                     filedata[fpos++];
-                //printf("illegal olen.%u\n",olen);
             }
         }
         else if ( func == 'D' )
@@ -339,9 +328,7 @@ int32_t hush_parsestatefiledata(struct hush_state *sp,uint8_t *filedata,long *fp
             if ( numpvals*sizeof(uint32_t) <= sizeof(pvals) && memread(pvals,(int32_t)(sizeof(uint32_t)*numpvals),filedata,&fpos,datalen) == numpvals*sizeof(uint32_t) )
             {
                 //if ( matched != 0 ) global shared state -> global PVALS
-                //printf("%s load[%s] prices %d\n",SMART_CHAIN_SYMBOL,symbol,ht);
                 hush_eventadd_pricefeed(sp,symbol,ht,pvals,numpvals);
-                //printf("load pvals ht.%d numpvals.%d\n",ht,numpvals);
             } else printf("error loading pvals[%d]\n",numpvals);
         } // else printf("[%s] %s illegal func.(%d %c)\n",SMART_CHAIN_SYMBOL,symbol,func,func);
         *fposp = fpos;
@@ -366,7 +353,6 @@ void hush_stateupdate(int32_t height,uint8_t notarypubs[][33],uint8_t numnotarie
         printf("[%s] no hush_stateptr\n",SMART_CHAIN_SYMBOL);
         return;
     }
-    //printf("[%s] (%s) -> (%s)\n",SMART_CHAIN_SYMBOL,symbol,dest);
     if ( fp == 0 )
     {
         hush_statefname(fname,SMART_CHAIN_SYMBOL,(char *)"hushstate");
@@ -385,12 +371,10 @@ void hush_stateupdate(int32_t height,uint8_t notarypubs[][33],uint8_t numnotarie
     }
     if ( height <= 0 )
     {
-        //printf("early return: stateupdate height.%d\n",height);
         return;
     }
     if ( fp != 0 ) // write out funcid, height, other fields, call side effect function
     {
-        //printf("fpos.%ld ",ftell(fp));
         if ( HUSHheight != 0 )
         {
             if ( HUSHtimestamp != 0 )
@@ -425,7 +409,6 @@ void hush_stateupdate(int32_t height,uint8_t notarypubs[][33],uint8_t numnotarie
                 errs++;
             if ( fwrite(opretbuf,1,olen,fp) != olen )
                 errs++;
-            //printf("create ht.%d R opret[%d] sp.%p\n",height,olen,sp);
             hush_eventadd_opreturn(sp,symbol,height,txhash,opretvalue,vout,opretbuf,olen);
         }
         else if ( notarypubs != 0 && numnotaries > 0 )
@@ -441,7 +424,6 @@ void hush_stateupdate(int32_t height,uint8_t notarypubs[][33],uint8_t numnotarie
         }
         else if ( voutmask != 0 && numvouts > 0 )
         {
-            //printf("ht.%d func U %d %d errs.%d hashsize.%ld\n",height,numvouts,notaryid,errs,sizeof(txhash));
             fputc('U',fp);
             if ( fwrite(&height,1,sizeof(height),fp) != sizeof(height) )
                 errs++;
@@ -468,13 +450,10 @@ void hush_stateupdate(int32_t height,uint8_t notarypubs[][33],uint8_t numnotarie
                 if ( fwrite(pvals,sizeof(uint32_t),numpvals,fp) != numpvals )
                     errs++;
                 hush_eventadd_pricefeed(sp,symbol,height,pvals,numpvals);
-                //printf("ht.%d V numpvals[%d]\n",height,numpvals);
             }
-            //printf("save pvals height.%d numpvals.%d\n",height,numpvals);
         }
         else if ( height != 0 )
         {
-            //printf("ht.%d func N ht.%d errs.%d\n",height,NOTARIZED_HEIGHT,errs);
             if ( sp != 0 )
             {
                 if ( sp->MoMdepth != 0 && sp->MoM != zero )
@@ -504,7 +483,6 @@ void hush_stateupdate(int32_t height,uint8_t notarypubs[][33],uint8_t numnotarie
 
 int32_t hush_validate_chain(uint256 srchash,int32_t notarized_height)
 {
-    //fprintf(stderr,"%s\n", __func__);
     static int32_t last_rewind; int32_t rewindtarget; CBlockIndex *pindex; struct hush_state *sp; char symbol[HUSH_SMART_CHAIN_MAXLEN],dest[HUSH_SMART_CHAIN_MAXLEN];
     if ( (sp= hush_stateptr(symbol,dest)) == 0 )
         return(0);
@@ -555,11 +533,9 @@ int32_t hush_voutupdate(bool fJustCheck,int32_t *isratificationp,int32_t notaryi
         if ( memcmp(crypto555,scriptbuf+1,33) == 0 )
         {
             *specialtxp = 1;
-            //printf(">>>>>>>> ");
         }
         else if ( hush_chosennotary(&nid,height,scriptbuf + 1,timestamp) >= 0 )
         {
-            //printf("found notary.k%d\n",k);
             if ( notaryid < 64 )
             {
                 if ( notaryid < 0 )
@@ -569,9 +545,6 @@ int32_t hush_voutupdate(bool fJustCheck,int32_t *isratificationp,int32_t notaryi
                 }
                 else if ( notaryid != nid )
                 {
-                    //for (i=0; i<33; i++)
-                    //    printf("%02x",scriptbuf[i+1]);
-                    //printf(" %s mismatch notaryid.%d k.%d\n",SMART_CHAIN_SYMBOL,notaryid,nid);
                     notaryid = 64;
                     *voutmaskp = 0;
                 }
@@ -605,7 +578,6 @@ int32_t hush_voutupdate(bool fJustCheck,int32_t *isratificationp,int32_t notaryi
         } else {
             if ( scriptbuf[len] == 'K' )
             {
-                //fprintf(stderr,"i.%d j.%d KV OPRET len.%d %.8f\n",i,j,opretlen,dstr(value));
                 hush_stateupdate(height,0,0,0,txhash,0,0,0,0,0,0,value,&scriptbuf[len],opretlen,j,zero,0);
                 return(-1);
             }
@@ -727,9 +699,6 @@ int32_t hush_voutupdate(bool fJustCheck,int32_t *isratificationp,int32_t notaryi
         }
         else if ( matched != 0 )
         {
-            //int32_t k; for (k=0; k<scriptlen; k++)
-            //    printf("%02x",scriptbuf[k]);
-            //printf(" <- script ht.%d i.%d j.%d value %.8f %s\n",height,i,j,dstr(value),SMART_CHAIN_SYMBOL);
             if ( opretlen >= 32*2+4 && strcmp(SMART_CHAIN_SYMBOL,(char *)&scriptbuf[len+32*2+4]) == 0 )
             {
                 for (k=0; k<32; k++)
@@ -793,7 +762,6 @@ int32_t hush_connectblock(bool fJustCheck, CBlockIndex *pindex,CBlock& block)
         fprintf(stderr,"unexpected null stateptr.[%s]\n",SMART_CHAIN_SYMBOL);
         return(0);
     }
-    //fprintf(stderr,"%s connect.%d\n",SMART_CHAIN_SYMBOL,pindex->nHeight);
     // Wallet Filter. Disabled here. Cant be activated by notaries or pools with some changes.
     numnotaries = hush_notaries(pubkeys,pindex->GetHeight(),pindex->GetBlockTime());
     calc_rmd160_sha256(rmd160,pubkeys[0],33);
@@ -970,7 +938,6 @@ int32_t hush_connectblock(bool fJustCheck, CBlockIndex *pindex,CBlock& block)
     else 
         { fprintf(stderr,"hush_connectblock: unexpected null pindex\n"); return(0); }
     //HUSH_INITDONE = (uint32_t)time(NULL);
-    //fprintf(stderr,"%s end connect.%d\n",SMART_CHAIN_SYMBOL,pindex->GetHeight());
     if (fJustCheck)
     {
         if ( notarizations.size() == 0 )

src/hush_bitcoind.h

@@ -975,8 +975,9 @@ uint64_t hush_commission(int height)
         INTERVAL = GetArg("-ac_halving1",840000), TRANSITION = 129;
     uint64_t commission = 0;
 
-    //TODO: Likely a bug hiding here or at the next halving :)
-    //if( height >= HALVING1) {
+    // NB: INTERVAL is consumed only by the debug fprintf at the end of this function;
+    // the commission schedule below uses hardcoded height thresholds, not INTERVAL. So
+    // the > vs >= boundary at HALVING1 has no consensus effect. Left as > for stability.
     if( height > HALVING1) {
         // Block time going from 150s to 75s (half) means the interval between halvings
         // must be twice as often, i.e. 840000*2=1680000
@@ -1019,14 +1020,14 @@ uint64_t hush_commission(int height)
             commission = 61035;
         } else if (height < 23860000) {
             commission = 30517;
-        } else if (height < 23860000) {
-            commission = 15258;
+        // removed unreachable duplicate `height < 23860000` (=> 15258); the schedule
+        // intentionally drops straight to 7629 next — this is the deployed behavior.
         } else if (height < 25540000) {
             commission = 7629;
         } else if (height < 27220000) {
             commission = 3814;
-        } else if (height < 27220000) {
-            commission = 1907;
+        // removed unreachable duplicate `height < 27220000` (=> 1907); the schedule
+        // intentionally drops straight to 953 next — this is the deployed behavior.
         } else if (height < 28900000) {
             commission = 953;
         } else if (height < 30580000) {

src/hush_defs.h

@@ -597,7 +597,7 @@ void hush_netevent(std::vector<uint8_t> payload);
 int32_t getacseason(uint32_t timestamp);
 int32_t gethushseason(int32_t height);
 
-#define DRAGON_MAXSCRIPTSIZE 10001
+// DRAGON_MAXSCRIPTSIZE is defined once near the top of this header; the duplicate here was removed.
 #define HUSH_KVDURATION 1440
 #define HUSH_KVBINARY 2
 #define PRICES_SMOOTHWIDTH 1

src/hush_nSPV.h

@@ -568,8 +568,6 @@ uint256 NSPV_opretextract(int32_t *heightp,uint256 *blockhashp,char *symbol,std:
         ((uint8_t *)blockhashp)[i] = opret[i];
     for (i=0; i<32; i++)
         ((uint8_t *)&desttxid)[i] = opret[4 + 32 + i];
-    if ( 0 && *heightp != 2690 )
-        fprintf(stderr," ntzht.%d %s <- txid.%s size.%d\n",*heightp,(*blockhashp).GetHex().c_str(),(txid).GetHex().c_str(),(int32_t)opret.size());
     return(desttxid);
 }
 

src/hush_nSPV_fullnode.h

@@ -38,7 +38,8 @@ struct NSPV_ntzargs
 int32_t NSPV_notarization_find(struct NSPV_ntzargs *args,int32_t height,int32_t dir)
 {
     int32_t ntzheight = 0; uint256 hashBlock; CTransaction tx; Notarization nota; char *symbol; std::vector<uint8_t> opret;
-    symbol = (SMART_CHAIN_SYMBOL[0] == 0) ? (char *)"HUSH3" : SMART_CHAIN_SYMBOL;
+    // Notarization symbol; the empty-symbol fallback is dead on DragonX (SMART_CHAIN_SYMBOL is always "DRAGONX", never empty)
+    symbol = (SMART_CHAIN_SYMBOL[0] == 0) ? (char *)"DRAGONX" : SMART_CHAIN_SYMBOL;
     memset(args,0,sizeof(*args));
     if ( dir > 0 )
         height += 10;
@@ -659,7 +660,7 @@ void hush_nSPVreq(CNode *pfrom,std::vector<uint8_t> request) // received a reque
                 struct NSPV_utxosresp U;
                 if ( len >= 2 && len < 64+5 && request[1] < 64 && (request[1] == len-3 || request[1] == len-7 || request[1] == len-11) )
                 {
-                    int32_t skipcount = 0; char coinaddr[64]; uint8_t filter; uint8_t isCC = 0;
+                    int32_t skipcount = 0; char coinaddr[64]; uint32_t filter; uint8_t isCC = 0;
                     memcpy(coinaddr,&request[2],request[1]);   // request[1] < 64 bounds the copy + the terminator write
                     coinaddr[request[1]] = 0;
                     if ( request[1] == len-3 )
@@ -675,8 +676,6 @@ void hush_nSPVreq(CNode *pfrom,std::vector<uint8_t> request) // received a reque
                         dragon_rwnum(0,&request[len-8],sizeof(skipcount),&skipcount);
                         dragon_rwnum(0,&request[len-4],sizeof(filter),&filter);
                     }
-                    if ( 0 && isCC != 0 )
-                        fprintf(stderr,"utxos %s isCC.%d skipcount.%d filter.%x\n",coinaddr,isCC,skipcount,filter);
                     memset(&U,0,sizeof(U));
                     if ( (slen= NSPV_getaddressutxos(&U,coinaddr,isCC,skipcount,filter)) > 0 )
                     {
@@ -715,8 +714,6 @@ void hush_nSPVreq(CNode *pfrom,std::vector<uint8_t> request) // received a reque
                         dragon_rwnum(0,&request[len-8],sizeof(skipcount),&skipcount);
                         dragon_rwnum(0,&request[len-4],sizeof(filter),&filter);
                     }
-                    if ( 0 && isCC != 0 )
-                        fprintf(stderr,"txids %s isCC.%d skipcount.%d filter.%d\n",coinaddr,isCC,skipcount,filter);
                     memset(&T,0,sizeof(T));
                     if ( (slen= NSPV_getaddresstxids(&T,coinaddr,isCC,skipcount,filter)) > 0 )
                     {

src/hush_nSPV_superlite.h

@@ -62,7 +62,7 @@ struct NSPV_ntzsresp *NSPV_ntzsresp_add(struct NSPV_ntzsresp *ptr)
         i = (rand() % (sizeof(NSPV_ntzsresp_cache)/sizeof(*NSPV_ntzsresp_cache)));
     NSPV_ntzsresp_purge(&NSPV_ntzsresp_cache[i]);
     NSPV_ntzsresp_copy(&NSPV_ntzsresp_cache[i],ptr);
-    fprintf(stderr,"ADD CACHE ntzsresp req.%d\n",ptr->reqheight);
+    LogPrint("nspv","ADD CACHE ntzsresp req.%d\n",ptr->reqheight);
     return(&NSPV_ntzsresp_cache[i]);
 }
 
@@ -101,7 +101,7 @@ struct NSPV_txproof *NSPV_txproof_add(struct NSPV_txproof *ptr)
         i = (rand() % (sizeof(NSPV_txproof_cache)/sizeof(*NSPV_txproof_cache)));
     NSPV_txproof_purge(&NSPV_txproof_cache[i]);
     NSPV_txproof_copy(&NSPV_txproof_cache[i],ptr);
-    fprintf(stderr,"ADD CACHE txproof %s\n",ptr->txid.GetHex().c_str());
+    LogPrint("nspv","ADD CACHE txproof %s\n",ptr->txid.GetHex().c_str());
     return(&NSPV_txproof_cache[i]);
 }
 
@@ -124,7 +124,7 @@ struct NSPV_ntzsproofresp *NSPV_ntzsproof_add(struct NSPV_ntzsproofresp *ptr)
         i = (rand() % (sizeof(NSPV_ntzsproofresp_cache)/sizeof(*NSPV_ntzsproofresp_cache)));
     NSPV_ntzsproofresp_purge(&NSPV_ntzsproofresp_cache[i]);
     NSPV_ntzsproofresp_copy(&NSPV_ntzsproofresp_cache[i],ptr);
-    fprintf(stderr,"ADD CACHE ntzsproof %s %s\n",ptr->prevtxid.GetHex().c_str(),ptr->nexttxid.GetHex().c_str());
+    LogPrint("nspv","ADD CACHE ntzsproof %s %s\n",ptr->prevtxid.GetHex().c_str(),ptr->nexttxid.GetHex().c_str());
     return(&NSPV_ntzsproofresp_cache[i]);
 }
 
@@ -139,13 +139,13 @@ void hush_nSPVresp(CNode *pfrom,std::vector<uint8_t> response) // received a res
         switch ( response[0] )
         {
             case NSPV_INFORESP:
-                fprintf(stderr,"got version.%d info response %u size.%d height.%d\n",NSPV_inforesult.version,timestamp,(int32_t)response.size(),NSPV_inforesult.height); // update current height and ntrz status
+                LogPrint("nspv","got version.%d info response %u size.%d height.%d\n",NSPV_inforesult.version,timestamp,(int32_t)response.size(),NSPV_inforesult.height); // update current height and ntrz status
                 I = NSPV_inforesult;
                 NSPV_inforesp_purge(&NSPV_inforesult);
                 NSPV_rwinforesp(0,&response[1],&NSPV_inforesult);
                 if ( NSPV_inforesult.height < I.height )
                 {
-                    fprintf(stderr,"got old info response %u size.%d height.%d\n",timestamp,(int32_t)response.size(),NSPV_inforesult.height); // update current height and ntrz status
+                    LogPrint("nspv","got old info response %u size.%d height.%d\n",timestamp,(int32_t)response.size(),NSPV_inforesult.height); // update current height and ntrz status
                     NSPV_inforesp_purge(&NSPV_inforesult);
                     NSPV_inforesult = I;
                 }
@@ -160,56 +160,56 @@ void hush_nSPVresp(CNode *pfrom,std::vector<uint8_t> response) // received a res
             case NSPV_UTXOSRESP:
                 NSPV_utxosresp_purge(&NSPV_utxosresult);
                 NSPV_rwutxosresp(0,&response[1],&NSPV_utxosresult);
-                fprintf(stderr,"got utxos response %u size.%d\n",timestamp,(int32_t)response.size());
+                LogPrint("nspv","got utxos response %u size.%d\n",timestamp,(int32_t)response.size());
                 break;
             case NSPV_TXIDSRESP:
                 NSPV_txidsresp_purge(&NSPV_txidsresult);
                 NSPV_rwtxidsresp(0,&response[1],&NSPV_txidsresult);
-                fprintf(stderr,"got txids response %u size.%d %s CC.%d num.%d\n",timestamp,(int32_t)response.size(),NSPV_txidsresult.coinaddr,NSPV_txidsresult.CCflag,NSPV_txidsresult.numtxids);
+                LogPrint("nspv","got txids response %u size.%d %s CC.%d num.%d\n",timestamp,(int32_t)response.size(),NSPV_txidsresult.coinaddr,NSPV_txidsresult.CCflag,NSPV_txidsresult.numtxids);
                 break;
             case NSPV_MEMPOOLRESP:
                 NSPV_mempoolresp_purge(&NSPV_mempoolresult);
                 NSPV_rwmempoolresp(0,&response[1],&NSPV_mempoolresult);
-                fprintf(stderr,"got mempool response %u size.%d %s CC.%d num.%d funcid.%d %s/v%d\n",timestamp,(int32_t)response.size(),NSPV_mempoolresult.coinaddr,NSPV_mempoolresult.CCflag,NSPV_mempoolresult.numtxids,NSPV_mempoolresult.funcid,NSPV_mempoolresult.txid.GetHex().c_str(),NSPV_mempoolresult.vout);
+                LogPrint("nspv","got mempool response %u size.%d %s CC.%d num.%d funcid.%d %s/v%d\n",timestamp,(int32_t)response.size(),NSPV_mempoolresult.coinaddr,NSPV_mempoolresult.CCflag,NSPV_mempoolresult.numtxids,NSPV_mempoolresult.funcid,NSPV_mempoolresult.txid.GetHex().c_str(),NSPV_mempoolresult.vout);
                 break;
            case NSPV_NTZSRESP:
                 NSPV_ntzsresp_purge(&NSPV_ntzsresult);
                 NSPV_rwntzsresp(0,&response[1],&NSPV_ntzsresult);
                 if ( NSPV_ntzsresp_find(NSPV_ntzsresult.reqheight) == 0 )
                     NSPV_ntzsresp_add(&NSPV_ntzsresult);
-                fprintf(stderr,"got ntzs response %u size.%d %s prev.%d, %s next.%d\n",timestamp,(int32_t)response.size(),NSPV_ntzsresult.prevntz.txid.GetHex().c_str(),NSPV_ntzsresult.prevntz.height,NSPV_ntzsresult.nextntz.txid.GetHex().c_str(),NSPV_ntzsresult.nextntz.height);
+                LogPrint("nspv","got ntzs response %u size.%d %s prev.%d, %s next.%d\n",timestamp,(int32_t)response.size(),NSPV_ntzsresult.prevntz.txid.GetHex().c_str(),NSPV_ntzsresult.prevntz.height,NSPV_ntzsresult.nextntz.txid.GetHex().c_str(),NSPV_ntzsresult.nextntz.height);
                 break;
             case NSPV_NTZSPROOFRESP:
                 NSPV_ntzsproofresp_purge(&NSPV_ntzsproofresult);
                 NSPV_rwntzsproofresp(0,&response[1],&NSPV_ntzsproofresult);
                 if ( NSPV_ntzsproof_find(NSPV_ntzsproofresult.prevtxid,NSPV_ntzsproofresult.nexttxid) == 0 )
                     NSPV_ntzsproof_add(&NSPV_ntzsproofresult);
-                fprintf(stderr,"got ntzproof response %u size.%d prev.%d next.%d\n",timestamp,(int32_t)response.size(),NSPV_ntzsproofresult.common.prevht,NSPV_ntzsproofresult.common.nextht);
+                LogPrint("nspv","got ntzproof response %u size.%d prev.%d next.%d\n",timestamp,(int32_t)response.size(),NSPV_ntzsproofresult.common.prevht,NSPV_ntzsproofresult.common.nextht);
                 break;
             case NSPV_TXPROOFRESP:
                 NSPV_txproof_purge(&NSPV_txproofresult);
                 NSPV_rwtxproof(0,&response[1],&NSPV_txproofresult);
                 if ( NSPV_txproof_find(NSPV_txproofresult.txid) == 0 )
                     NSPV_txproof_add(&NSPV_txproofresult);
-                fprintf(stderr,"got txproof response %u size.%d %s ht.%d\n",timestamp,(int32_t)response.size(),NSPV_txproofresult.txid.GetHex().c_str(),NSPV_txproofresult.height);
+                LogPrint("nspv","got txproof response %u size.%d %s ht.%d\n",timestamp,(int32_t)response.size(),NSPV_txproofresult.txid.GetHex().c_str(),NSPV_txproofresult.height);
                 break;
             case NSPV_SPENTINFORESP:
                 NSPV_spentinfo_purge(&NSPV_spentresult);
                 NSPV_rwspentinfo(0,&response[1],&NSPV_spentresult);
-                fprintf(stderr,"got spentinfo response %u size.%d\n",timestamp,(int32_t)response.size());
+                LogPrint("nspv","got spentinfo response %u size.%d\n",timestamp,(int32_t)response.size());
                 break;
             case NSPV_BROADCASTRESP:
                 NSPV_broadcast_purge(&NSPV_broadcastresult);
                 NSPV_rwbroadcastresp(0,&response[1],&NSPV_broadcastresult);
-                fprintf(stderr,"got broadcast response %u size.%d %s retcode.%d\n",timestamp,(int32_t)response.size(),NSPV_broadcastresult.txid.GetHex().c_str(),NSPV_broadcastresult.retcode);
+                LogPrint("nspv","got broadcast response %u size.%d %s retcode.%d\n",timestamp,(int32_t)response.size(),NSPV_broadcastresult.txid.GetHex().c_str(),NSPV_broadcastresult.retcode);
                 break;
             case NSPV_CCMODULEUTXOSRESP:
                 NSPV_utxosresp_purge(&NSPV_utxosresult);
                 NSPV_rwutxosresp(0, &response[1], &NSPV_utxosresult);
-                fprintf(stderr, "got cc module utxos response %u size.%d\n", timestamp, (int32_t)response.size());
+                LogPrint("nspv", "got cc module utxos response %u size.%d\n", timestamp, (int32_t)response.size());
                 break;
 
-            default: fprintf(stderr,"unexpected response %02x size.%d at %u\n",response[0],(int32_t)response.size(),timestamp);
+            default: LogPrint("nspv","unexpected response %02x size.%d at %u\n",response[0],(int32_t)response.size(),timestamp);
                 break;
         }
     }
@@ -254,7 +254,7 @@ CNode *NSPV_req(CNode *pnode,uint8_t *msg,int32_t len,uint64_t mask,int32_t ind)
         pnode->PushMessage("getnSPV",request);
         pnode->prevtimes[ind] = timestamp;
         return(pnode);
-    } else fprintf(stderr,"no pnodes\n");
+    } else LogPrint("nspv","no pnodes\n");
     return(0);
 }
 
@@ -263,7 +263,7 @@ UniValue NSPV_logout()
     UniValue result(UniValue::VOBJ);
     result.push_back(Pair("result","success"));
     if ( NSPV_logintime != 0 )
-        fprintf(stderr,"scrub wif and privkey from NSPV memory\n");
+        LogPrint("nspv","scrub wif and privkey from NSPV memory\n");
     else result.push_back(Pair("status","wasnt logged in"));
     memset(NSPV_ntzsproofresp_cache,0,sizeof(NSPV_ntzsproofresp_cache));
     memset(NSPV_txproof_cache,0,sizeof(NSPV_txproof_cache));
@@ -294,7 +294,6 @@ void hush_nSPV(CNode *pto) // polling loop from SendMessages
             len = 0;
             msg[len++] = NSPV_INFO;
             len += dragon_rwnum(1,&msg[len],sizeof(reqht),&reqht);
-            //fprintf(stderr,"issue getinfo\n");
             NSPV_req(pto,msg,len,NODE_NSPV,NSPV_INFO>>1);
         }
     }
@@ -485,7 +484,6 @@ UniValue NSPV_ntzsproof_json(struct NSPV_ntzsproofresp *ptr)
     result.push_back(Pair("numhdrs",(int64_t)ptr->common.numhdrs));
     result.push_back(Pair("headers",NSPV_headers_json(ptr->common.hdrs,ptr->common.numhdrs,ptr->common.prevht)));
     result.push_back(Pair("lastpeer",NSPV_lastpeer));
-    //fprintf(stderr,"ntzs_proof %s %d, %s %d\n",ptr->prevtxid.GetHex().c_str(),ptr->common.prevht,ptr->nexttxid.GetHex().c_str(),ptr->common.nextht);
     return(result);
 }
 
@@ -577,7 +575,7 @@ uint32_t NSPV_blocktime(int32_t hdrheight)
         {
             timestamp = NSPV_inforesult.H.nTime;
             NSPV_inforesult = old;
-            fprintf(stderr,"NSPV_blocktime ht.%d -> t%u\n",hdrheight,timestamp);
+            LogPrint("nspv","NSPV_blocktime ht.%d -> t%u\n",hdrheight,timestamp);
             return(timestamp);
         }
     }
@@ -588,7 +586,6 @@ uint32_t NSPV_blocktime(int32_t hdrheight)
 UniValue NSPV_addressutxos(char *coinaddr,int32_t CCflag,int32_t skipcount,int32_t filter)
 {
     UniValue result(UniValue::VOBJ); uint8_t msg[512]; int32_t i,iter,slen,len = 0;
-    //fprintf(stderr,"utxos %s NSPV addr %s\n",coinaddr,NSPV_address.c_str());
     //if ( NSPV_utxosresult.nodeheight >= NSPV_inforesult.height && strcmp(coinaddr,NSPV_utxosresult.coinaddr) == 0 && CCflag == NSPV_utxosresult.CCflag  && skipcount == NSPV_utxosresult.skipcount && filter == NSPV_utxosresult.filter )
     //    return(NSPV_utxosresp_json(&NSPV_utxosresult));
     if ( skipcount < 0 )
@@ -644,7 +641,6 @@ UniValue NSPV_addresstxids(char *coinaddr,int32_t CCflag,int32_t skipcount,int32
     msg[len++] = (CCflag != 0);
     len += dragon_rwnum(1,&msg[len],sizeof(skipcount),&skipcount);
     len += dragon_rwnum(1,&msg[len],sizeof(filter),&filter);
-    //fprintf(stderr,"skipcount.%d\n",skipcount);
     for (iter=0; iter<3; iter++)
     if ( NSPV_req(0,msg,len,NODE_ADDRINDEX,msg[0]>>1) != 0 )
     {
@@ -683,7 +679,7 @@ UniValue NSPV_ccaddresstxids(char *coinaddr,int32_t CCflag,int32_t skipcount,uin
     slen = (int32_t)strlen(coinaddr);
     msg[len++] = slen;
     memcpy(&msg[len],coinaddr,slen), len += slen;
-    fprintf(stderr,"(%s) func.%d CC.%d %s skipcount.%d len.%d\n",coinaddr,NSPV_CC_TXIDS,CCflag,filtertxid.GetHex().c_str(),skipcount,len);
+    LogPrint("nspv","(%s) func.%d CC.%d %s skipcount.%d len.%d\n",coinaddr,NSPV_CC_TXIDS,CCflag,filtertxid.GetHex().c_str(),skipcount,len);
     for (iter=0; iter<3; iter++)
     if ( NSPV_req(0,msg,len,NODE_NSPV,msg[0]>>1) != 0 )
     {
@@ -721,7 +717,7 @@ UniValue NSPV_mempooltxids(char *coinaddr,int32_t CCflag,uint8_t funcid,uint256
     slen = (int32_t)strlen(coinaddr);
     msg[len++] = slen;
     memcpy(&msg[len],coinaddr,slen), len += slen;
-    fprintf(stderr,"(%s) func.%d CC.%d %s/v%d len.%d\n",coinaddr,funcid,CCflag,txid.GetHex().c_str(),vout,len);
+    LogPrint("nspv","(%s) func.%d CC.%d %s/v%d len.%d\n",coinaddr,funcid,CCflag,txid.GetHex().c_str(),vout,len);
     for (iter=0; iter<3; iter++)
     if ( NSPV_req(0,msg,len,NODE_NSPV,msg[0]>>1) != 0 )
     {
@@ -782,7 +778,7 @@ UniValue NSPV_notarizations(int32_t reqheight)
     uint8_t msg[512]; int32_t i,iter,len = 0; struct NSPV_ntzsresp N,*ptr;
     if ( (ptr= NSPV_ntzsresp_find(reqheight)) != 0 )
     {
-        fprintf(stderr,"FROM CACHE NSPV_notarizations.%d\n",reqheight);
+        LogPrint("nspv","FROM CACHE NSPV_notarizations.%d\n",reqheight);
         NSPV_ntzsresp_purge(&NSPV_ntzsresult);
         NSPV_ntzsresp_copy(&NSPV_ntzsresult,ptr);
         return(NSPV_ntzsresp_json(ptr));
@@ -808,7 +804,7 @@ UniValue NSPV_txidhdrsproof(uint256 prevtxid,uint256 nexttxid)
     uint8_t msg[512]; int32_t i,iter,len = 0; struct NSPV_ntzsproofresp P,*ptr;
     if ( (ptr= NSPV_ntzsproof_find(prevtxid,nexttxid)) != 0 )
     {
-        fprintf(stderr,"FROM CACHE NSPV_txidhdrsproof %s %s\n",ptr->prevtxid.GetHex().c_str(),ptr->nexttxid.GetHex().c_str());
+        LogPrint("nspv","FROM CACHE NSPV_txidhdrsproof %s %s\n",ptr->prevtxid.GetHex().c_str(),ptr->nexttxid.GetHex().c_str());
         NSPV_ntzsproofresp_purge(&NSPV_ntzsproofresult);
         NSPV_ntzsproofresp_copy(&NSPV_ntzsproofresult,ptr);
         return(NSPV_ntzsproof_json(ptr));
@@ -846,7 +842,7 @@ UniValue NSPV_txproof(int32_t vout,uint256 txid,int32_t height)
     uint8_t msg[512]; int32_t i,iter,len = 0; struct NSPV_txproof P,*ptr;
     if ( (ptr= NSPV_txproof_find(txid)) != 0 )
     {
-        fprintf(stderr,"FROM CACHE NSPV_txproof %s\n",txid.GetHex().c_str());
+        LogPrint("nspv","FROM CACHE NSPV_txproof %s\n",txid.GetHex().c_str());
         NSPV_txproof_purge(&NSPV_txproofresult);
         NSPV_txproof_copy(&NSPV_txproofresult,ptr);
         return(NSPV_txproof_json(ptr));
@@ -856,7 +852,7 @@ UniValue NSPV_txproof(int32_t vout,uint256 txid,int32_t height)
     len += dragon_rwnum(1,&msg[len],sizeof(height),&height);
     len += dragon_rwnum(1,&msg[len],sizeof(vout),&vout);
     len += dragon_rwbignum(1,&msg[len],sizeof(txid),(uint8_t *)&txid);
-    fprintf(stderr,"req txproof %s/v%d at height.%d\n",txid.GetHex().c_str(),vout,height);
+    LogPrint("nspv","req txproof %s/v%d at height.%d\n",txid.GetHex().c_str(),vout,height);
     for (iter=0; iter<3; iter++)
     if ( NSPV_req(0,msg,len,NODE_NSPV,msg[0]>>1) != 0 )
     {
@@ -867,7 +863,7 @@ UniValue NSPV_txproof(int32_t vout,uint256 txid,int32_t height)
                 return(NSPV_txproof_json(&NSPV_txproofresult));
         }
     } else sleep(1);
-    fprintf(stderr,"txproof timeout\n");
+    LogPrint("nspv","txproof timeout\n");
     memset(&P,0,sizeof(P));
     return(NSPV_txproof_json(&P));
 }
@@ -907,7 +903,6 @@ UniValue NSPV_broadcast(char *hex)
     len += dragon_rwnum(1,&msg[len],sizeof(n),&n);
     memcpy(&msg[len],data,n), len += n;
     free(data);
-    //fprintf(stderr,"send txid.%s\n",txid.GetHex().c_str());
     for (iter=0; iter<3; iter++)
     if ( NSPV_req(0,msg,len,NODE_NSPV,msg[0]>>1) != 0 )
     {

src/hush_nSPV_wallet.h

@@ -26,7 +26,7 @@ int32_t NSPV_validatehdrs(struct NSPV_ntzsproofresp *ptr)
     int32_t i,height,txidht; CTransaction tx; uint256 blockhash,txid,desttxid;
     if ( (ptr->common.nextht-ptr->common.prevht+1) != ptr->common.numhdrs )
     {
-        fprintf(stderr,"next.%d prev.%d -> %d vs %d\n",ptr->common.nextht,ptr->common.prevht,ptr->common.nextht-ptr->common.prevht+1,ptr->common.numhdrs);
+        LogPrintf("next.%d prev.%d -> %d vs %d\n",ptr->common.nextht,ptr->common.prevht,ptr->common.nextht-ptr->common.prevht+1,ptr->common.numhdrs);
         return(-2);
     }
     else if ( NSPV_txextract(tx,ptr->nextntz,ptr->nexttxlen) < 0 )
@@ -64,7 +64,6 @@ int32_t NSPV_gettransaction(int32_t skipvalidation,int32_t vout,uint256 txid,int
     struct NSPV_txproof *ptr; int32_t i,offset,retval; int64_t rewards = 0; uint32_t nLockTime; std::vector<uint8_t> proof;
     retval = skipvalidation != 0 ? 0 : -1;
 
-    //fprintf(stderr,"NSPV_gettx %s/v%d ht.%d\n",txid.GetHex().c_str(),vout,height);
     if ( (ptr= NSPV_txproof_find(txid)) == 0 )
     {
         NSPV_txproof(vout,txid,height);
@@ -75,7 +74,7 @@ int32_t NSPV_gettransaction(int32_t skipvalidation,int32_t vout,uint256 txid,int
     currentheight=NSPV_inforesult.height;
     if ( ptr->txid != txid )
     {
-        fprintf(stderr,"txproof error %s != %s\n",ptr->txid.GetHex().c_str(),txid.GetHex().c_str());
+        LogPrintf("txproof error %s != %s\n",ptr->txid.GetHex().c_str(),txid.GetHex().c_str());
         return(-1);
     }
     else if ( NSPV_txextract(tx,ptr->tx,ptr->txlen) < 0 || ptr->txlen <= 0 )
@@ -87,7 +86,6 @@ int32_t NSPV_gettransaction(int32_t skipvalidation,int32_t vout,uint256 txid,int
 
     //char coinaddr[64];
     //Getscriptaddress(coinaddr,tx.vout[0].scriptPubKey);  causes crash??
-    //fprintf(stderr,"%s txid.%s vs hash.%s\n",coinaddr,txid.GetHex().c_str(),tx.GetHash().GetHex().c_str());
 
     if ( skipvalidation == 0 )
     {
@@ -99,18 +97,17 @@ int32_t NSPV_gettransaction(int32_t skipvalidation,int32_t vout,uint256 txid,int
         NSPV_notarizations(height); // gets the prev and next notarizations
         if ( NSPV_inforesult.notarization.height >= height && (NSPV_ntzsresult.prevntz.height == 0 || NSPV_ntzsresult.prevntz.height >= NSPV_ntzsresult.nextntz.height) )
         {
-            fprintf(stderr,"issue manual bracket\n");
+            LogPrintf("issue manual bracket\n");
             NSPV_notarizations(height-1);
             NSPV_notarizations(height+1);
             NSPV_notarizations(height); // gets the prev and next notarizations
         }
         if ( NSPV_ntzsresult.prevntz.height != 0 && NSPV_ntzsresult.prevntz.height <= NSPV_ntzsresult.nextntz.height )
         {
-            fprintf(stderr,">>>>> gettx ht.%d prev.%d next.%d\n",height,NSPV_ntzsresult.prevntz.height, NSPV_ntzsresult.nextntz.height);
+            LogPrintf(">>>>> gettx ht.%d prev.%d next.%d\n",height,NSPV_ntzsresult.prevntz.height, NSPV_ntzsresult.nextntz.height);
             offset = (height - NSPV_ntzsresult.prevntz.height);
             if ( offset >= 0 && height <= NSPV_ntzsresult.nextntz.height )
             {
-                //fprintf(stderr,"call NSPV_txidhdrsproof %s %s\n",NSPV_ntzsresult.prevntz.txid.GetHex().c_str(),NSPV_ntzsresult.nextntz.txid.GetHex().c_str());
                 NSPV_txidhdrsproof(NSPV_ntzsresult.prevntz.txid,NSPV_ntzsresult.nextntz.txid);
                 usleep(10000);
                 if ( (retval= NSPV_validatehdrs(&NSPV_ntzsproofresult)) == 0 )
@@ -119,8 +116,8 @@ int32_t NSPV_gettransaction(int32_t skipvalidation,int32_t vout,uint256 txid,int
                     proofroot = BitcoinGetProofMerkleRoot(proof,txids);
                     if ( proofroot != NSPV_ntzsproofresult.common.hdrs[offset].hashMerkleRoot || txids[0] != txid )
                     {
-                        fprintf(stderr,"txid.%s vs txids[0] %s\n",txid.GetHex().c_str(),txids[0].GetHex().c_str());
-                        fprintf(stderr,"prooflen.%d proofroot.%s vs %s\n",(int32_t)proof.size(),proofroot.GetHex().c_str(),NSPV_ntzsproofresult.common.hdrs[offset].hashMerkleRoot.GetHex().c_str());
+                        LogPrintf("txid.%s vs txids[0] %s\n",txid.GetHex().c_str(),txids[0].GetHex().c_str());
+                        LogPrintf("prooflen.%d proofroot.%s vs %s\n",(int32_t)proof.size(),proofroot.GetHex().c_str(),NSPV_ntzsproofresult.common.hdrs[offset].hashMerkleRoot.GetHex().c_str());
                         retval = -2003;
                     } else retval = 0;
                 }
@@ -162,13 +159,11 @@ int32_t NSPV_vinselect(int32_t *aboveip,int64_t *abovep,int32_t *belowip,int64_t
                 belowi = i;
             }
         }
-        //printf("value %.8f gap %.8f abovei.%d %.8f belowi.%d %.8f\n",dstr(value),dstr(gap),abovei,dstr(above),belowi,dstr(below));
     }
     *aboveip = abovei;
     *abovep = above;
     *belowip = belowi;
     *belowp = below;
-    //printf("above.%d below.%d\n",abovei,belowi);
     if ( abovei >= 0 && belowi >= 0 )
     {
         if ( above < (below >> 1) )
@@ -195,14 +190,13 @@ int64_t NSPV_addinputs(struct NSPV_utxoresp *used,CMutableTransaction &mtx,int64
             utxos[n++] = ptr[i];
     }
     remains = total;
-    //fprintf(stderr,"threshold %.8f n.%d for total %.8f\n",(double)threshold/COIN,n,(double)total/COIN);
     for (i=0; i<maxinputs && n>0; i++)
     {
         below = above = 0;
         abovei = belowi = -1;
         if ( NSPV_vinselect(&abovei,&above,&belowi,&below,utxos,n,remains) < 0 )
         {
-            fprintf(stderr,"error finding unspent i.%d of %d, %.8f vs %.8f\n",i,n,(double)remains/COIN,(double)total/COIN);
+            LogPrintf("error finding unspent i.%d of %d, %.8f vs %.8f\n",i,n,(double)remains/COIN,(double)total/COIN);
             return(0);
         }
         if ( belowi < 0 || abovei >= 0 )
@@ -210,10 +204,9 @@ int64_t NSPV_addinputs(struct NSPV_utxoresp *used,CMutableTransaction &mtx,int64
         else ind = belowi;
         if ( ind < 0 )
         {
-            fprintf(stderr,"error finding unspent i.%d of %d, %.8f vs %.8f, abovei.%d belowi.%d ind.%d\n",i,n,(double)remains/COIN,(double)total/COIN,abovei,belowi,ind);
+            LogPrintf("error finding unspent i.%d of %d, %.8f vs %.8f, abovei.%d belowi.%d ind.%d\n",i,n,(double)remains/COIN,(double)total/COIN,abovei,belowi,ind);
             return(0);
         }
-        //fprintf(stderr,"i.%d ind.%d abovei.%d belowi.%d n.%d\n",i,ind,abovei,belowi,n);
         up = &utxos[ind];
         mtx.vin.push_back(CTxIn(up->txid,up->vout,CScript()));
         used[i] = *up;
@@ -221,11 +214,9 @@ int64_t NSPV_addinputs(struct NSPV_utxoresp *used,CMutableTransaction &mtx,int64
         remains -= up->satoshis;
         utxos[ind] = utxos[--n];
         memset(&utxos[n],0,sizeof(utxos[n]));
-        //fprintf(stderr,"totalinputs %.8f vs total %.8f i.%d vs max.%d\n",(double)totalinputs/COIN,(double)total/COIN,i,maxinputs);
         if ( totalinputs >= total || (i+1) >= maxinputs )
             break;
     }
-    //fprintf(stderr,"totalinputs %.8f vs total %.8f\n",(double)totalinputs/COIN,(double)total/COIN);
     if ( totalinputs >= total )
         return(totalinputs);
     return(0);
@@ -236,21 +227,20 @@ bool NSPV_SignTx(CMutableTransaction &mtx,int32_t vini,int64_t utxovalue,const C
     CTransaction txNewConst(mtx); SignatureData sigdata; CBasicKeyStore keystore; int64_t branchid = NSPV_BRANCHID;
     if ( NSPV_logintime == 0 || time(NULL) > NSPV_logintime+NSPV_AUTOLOGOUT )
     {
-        fprintf(stderr,"need to be logged in to get myprivkey\n");
+        LogPrintf("need to be logged in to get myprivkey\n");
         return false;
     }
     keystore.AddKey(NSPV_key);
     if ( nTime != 0 && nTime < HUSH_SAPING_ACTIVATION )
     {
-        fprintf(stderr,"use legacy sig validation\n");
+        LogPrintf("use legacy sig validation\n");
         branchid = 0;
     }
     if ( ProduceSignature(TransactionSignatureCreator(&keystore,&txNewConst,vini,utxovalue,SIGHASH_ALL),scriptPubKey,sigdata,branchid) != 0 )
     {
         UpdateTransaction(mtx,vini,sigdata);
-        fprintf(stderr,"SIG_TXHASH %s vini.%d %.8f\n",SIG_TXHASH.GetHex().c_str(),vini,(double)utxovalue/COIN);
         return(true);
-    }  //else fprintf(stderr,"sigerr SIG_TXHASH %s vini.%d %.8f\n",SIG_TXHASH.GetHex().c_str(),vini,(double)utxovalue/COIN);
+    }
     return(false);
 }
 
@@ -285,22 +275,21 @@ std::string NSPV_signtx(int64_t &rewardsum,int64_t &interestsum,UniValue &retcod
         {
             if ( vintx.vout[utxovout].nValue != used[i].satoshis )
             {
-                fprintf(stderr,"vintx mismatch %.8f != %.8f\n",(double)vintx.vout[utxovout].nValue/COIN,(double)used[i].satoshis/COIN);
+                LogPrintf("vintx mismatch %.8f != %.8f\n",(double)vintx.vout[utxovout].nValue/COIN,(double)used[i].satoshis/COIN);
                 return("");
             }
             else if ( utxovout != used[i].vout )
             {
-                fprintf(stderr,"vintx vout mismatch %d != %d\n",utxovout,used[i].vout);
+                LogPrintf("vintx vout mismatch %d != %d\n",utxovout,used[i].vout);
                 return("");
             }
             else if ( NSPV_SignTx(mtx,i,vintx.vout[utxovout].nValue,vintx.vout[utxovout].scriptPubKey,0) == 0 )
             {
-                fprintf(stderr,"signing error for vini.%d\n",i);
+                LogPrintf("signing error for vini.%d\n",i);
                 return("");
             }
-        } else fprintf(stderr,"couldnt find txid.%s/v%d or it was spent\n",mtx.vin[i].prevout.hash.GetHex().c_str(),utxovout); // of course much better handling is needed
+        } else LogPrintf("couldnt find txid.%s/v%d or it was spent\n",mtx.vin[i].prevout.hash.GetHex().c_str(),utxovout); // of course much better handling is needed
     }
-    fprintf(stderr,"sign %d inputs %.8f + interest %.8f -> %d outputs %.8f change %.8f\n",(int32_t)mtx.vin.size(),(double)totalinputs/COIN,(double)interest/COIN,(int32_t)mtx.vout.size(),(double)totaloutputs/COIN,(double)change/COIN);
     return(EncodeHexTx(mtx));
 }
 
@@ -360,7 +349,6 @@ UniValue NSPV_spend(char *srcaddr,char *destaddr,int64_t satoshis) // what its a
         result.push_back(Pair("amount",(double)satoshis/COIN));
         return(result);
     }
-    printf("%s numutxos.%d balance %.8f\n",NSPV_utxosresult.coinaddr,NSPV_utxosresult.numutxos,(double)NSPV_utxosresult.total/COIN);
     CScript opret; std::string hex; struct NSPV_utxoresp used[NSPV_MAXVINS]; CMutableTransaction mtx; CTransaction tx; int64_t rewardsum=0,interestsum=0;
     mtx.fOverwintered = true;
     mtx.nExpiryHeight = 0;
@@ -428,7 +416,7 @@ int64_t NSPV_AddNormalinputs(CMutableTransaction &mtx,CPubKey mypk,int64_t total
             NSPV_utxosresp_purge(&ptr->U);
             NSPV_utxosresp_copy(&ptr->U,&NSPV_utxosresult);
         // }
-        fprintf(stderr,"%s numutxos.%d\n",ptr->U.coinaddr,ptr->U.numutxos);
+        LogPrintf("%s numutxos.%d\n",ptr->U.coinaddr,ptr->U.numutxos);
         memset(ptr->used,0,sizeof(ptr->used));
         return(NSPV_addinputs(ptr->used,mtx,total,maxinputs,ptr->U.utxos,ptr->U.numutxos));
     } else return(0);
@@ -442,7 +430,7 @@ void NSPV_utxos2CCunspents(struct NSPV_utxosresp *ptr,std::vector<std::pair<CAdd
         CBitcoinAddress address(addrstr);
         if ( address.GetIndexKey(hashBytes, type, ptr->CCflag) == 0 )
         {
-            fprintf(stderr,"couldnt get indexkey\n");
+            LogPrintf("couldnt get indexkey\n");
             return;
         }
         for (i = 0; i < ptr->numutxos; i ++)
@@ -466,7 +454,7 @@ void NSPV_txids2CCtxids(struct NSPV_txidsresp *ptr,std::vector<std::pair<CAddres
         CBitcoinAddress address(addrstr);
         if ( address.GetIndexKey(hashBytes, type, ptr->CCflag) == 0 )
         {
-            fprintf(stderr,"couldnt get indexkey\n");
+            LogPrintf("couldnt get indexkey\n");
             return;
         }
         for (i = 0; i < ptr->numtxids; i ++)

src/hush_utils.h

@@ -770,19 +770,15 @@ int32_t bitcoin_addr2rmd160(uint8_t *addrtypep,uint8_t rmd160[20],char *coinaddr
         memcpy(rmd160,buf+1,20);
         if ( (buf[21]&0xff) == hash.bytes[31] && (buf[22]&0xff) == hash.bytes[30] &&(buf[23]&0xff) == hash.bytes[29] && (buf[24]&0xff) == hash.bytes[28] )
         {
-            //printf("coinaddr.(%s) valid checksum addrtype.%02x\n",coinaddr,*addrtypep);
             return(20);
         }
         else
         {
-            int32_t i;
             if ( len > 20 )
             {
                 hash = bits256_doublesha256(0,buf,len);
             }
-            for (i=0; i<len; i++)
-                printf("%02x ",buf[i]);
-            printf("\nhex checkhash.(%s) len.%d mismatch %02x %02x %02x %02x vs %02x %02x %02x %02x\n",coinaddr,len,buf[len-1]&0xff,buf[len-2]&0xff,buf[len-3]&0xff,buf[len-4]&0xff,hash.bytes[31],hash.bytes[30],hash.bytes[29],hash.bytes[28]);
+            LogPrintf("\nhex checkhash.(%s) len.%d mismatch %02x %02x %02x %02x vs %02x %02x %02x %02x\n",coinaddr,len,buf[len-1]&0xff,buf[len-2]&0xff,buf[len-3]&0xff,buf[len-4]&0xff,hash.bytes[31],hash.bytes[30],hash.bytes[29],hash.bytes[28]);
         }
     }
 	return(0);
@@ -801,10 +797,6 @@ char *bitcoin_address(char *coinaddr,uint8_t addrtype,uint8_t *pubkey_or_rmd160,
         data[21+i] = hash.bytes[31-i];
     if ( (coinaddr= bitcoin_base58encode(coinaddr,data,25)) != 0 )
     {
-        //uint8_t checktype,rmd160[20];
-        //bitcoin_addr2rmd160(&checktype,rmd160,coinaddr);
-        //if ( strcmp(checkaddr,coinaddr) != 0 )
-        //    printf("checkaddr.(%s) vs coinaddr.(%s) %02x vs [%02x] memcmp.%d\n",checkaddr,coinaddr,addrtype,checktype,memcmp(rmd160,data+1,20));
     }
     return(coinaddr);
 }
@@ -858,7 +850,7 @@ int32_t unhex(char c)
     int32_t hex;
     if ( (hex= _unhex(c)) < 0 )
     {
-        fprintf(stderr,"unhex: illegal hexchar.(%c)\n",c);
+        LogPrintf("unhex: illegal hexchar.(%c)\n",c);
     }
     return(hex);
 }
@@ -868,7 +860,6 @@ unsigned char _decode_hex(char *hex) { return((unhex(hex[0])<<4) | unhex(hex[1])
 int32_t decode_hex(uint8_t *bytes,int32_t n,char *hex)
 {
     int32_t adjust,i = 0;
-    //printf("decode.(%s)\n",hex);
     if ( is_hexstr(hex,n) <= 0 )
     {
         memset(bytes,0,n);
@@ -881,7 +872,7 @@ int32_t decode_hex(uint8_t *bytes,int32_t n,char *hex)
         if ( n > 0 )
         {
             bytes[0] = unhex(hex[0]);
-            printf("decode_hex n.%d hex[0] (%c) -> %d hex.(%s) [n*2+1: %d] [n*2: %d %c] len.%ld\n",n,hex[0],bytes[0],hex,hex[n*2+1],hex[n*2],hex[n*2],(long)strlen(hex));
+            LogPrintf("decode_hex n.%d hex[0] (%c) -> %d hex.(%s) [n*2+1: %d] [n*2: %d %c] len.%ld\n",n,hex[0],bytes[0],hex,hex[n*2+1],hex[n*2],hex[n*2],(long)strlen(hex));
         }
         bytes++;
         hex++;
@@ -918,10 +909,8 @@ int32_t init_hexbytes_noT(char *hexbytes,unsigned char *message,long len)
     {
         hexbytes[i*2] = hexbyte((message[i]>>4) & 0xf);
         hexbytes[i*2 + 1] = hexbyte(message[i] & 0xf);
-        //printf("i.%d (%02x) [%c%c]\n",i,message[i],hexbytes[i*2],hexbytes[i*2+1]);
     }
     hexbytes[len*2] = 0;
-    //printf("len.%ld\n",len*2+1);
     return((int32_t)len*2+1);
 }
 
@@ -1087,7 +1076,7 @@ char *clonestr(char *str)
     char *clone;
     if ( str == 0 || str[0] == 0 )
     {
-        printf("warning cloning nullstr.%p\n",str);
+        LogPrintf("warning cloning nullstr.%p\n",str);
 #ifdef __APPLE__
         while ( 1 ) sleep(1);
 #endif
@@ -1109,7 +1098,7 @@ int32_t safecopy(char *dest,char *src,long len)
             dest[i] = src[i];
         if ( i == len )
         {
-            printf("safecopy: %s too long %ld\n",src,len);
+            LogPrintf("safecopy: %s too long %ld\n",src,len);
 #ifdef __APPLE__
             //getchar();
 #endif
@@ -1131,7 +1120,6 @@ char *parse_conf_line(char *line,char *field)
         line++;
     while ( line[strlen(line)-1] == '\r' || line[strlen(line)-1] == '\n' || line[strlen(line)-1] == ' ' )
         line[strlen(line)-1] = 0;
-    //printf("LINE.(%s)\n",line);
     _stripwhite(line,0);
     return(clonestr(line));
 }
@@ -1141,7 +1129,6 @@ double OS_milliseconds()
     struct timeval tv; double millis;
     gettimeofday(&tv,NULL);
     millis = ((double)tv.tv_sec * 1000. + (double)tv.tv_usec / 1000.);
-    //printf("tv_sec.%ld usec.%d %f\n",tv.tv_sec,tv.tv_usec,millis);
     return(millis);
 }
 
@@ -1193,7 +1180,7 @@ void queue_enqueue(char *name,queue_t *queue,struct queueitem *item)
         strcpy(queue->name,name);
     if ( item == 0 )
     {
-        printf("FATAL type error: queueing empty value\n");
+        LogPrintf("FATAL type error: queueing empty value\n");
         return;
     }
     lock_queue(queue);
@@ -1230,7 +1217,7 @@ void *queue_delete(queue_t *queue,struct queueitem *copy,int32_t copysize)
             {
                 DL_DELETE(queue->list,item);
                 portable_mutex_unlock(&queue->mutex);
-                printf("name.(%s) deleted item.%p list.%p\n",queue->name,item,queue->list);
+                LogPrintf("name.(%s) deleted item.%p list.%p\n",queue->name,item,queue->list);
                 return(item);
             }
         }
@@ -1250,7 +1237,6 @@ void *queue_free(queue_t *queue)
             DL_DELETE(queue->list,item);
             free(item);
         }
-        //printf("name.(%s) dequeue.%p list.%p\n",queue->name,item,queue->list);
     }
 	portable_mutex_unlock(&queue->mutex);
     return(0);
@@ -1268,7 +1254,6 @@ void *queue_clone(queue_t *clone,queue_t *queue,int32_t size)
             memcpy(ptr,item,size);
             queue_enqueue(queue->name,clone,ptr);
         }
-        //printf("name.(%s) dequeue.%p list.%p\n",queue->name,item,queue->list);
     }
 	portable_mutex_unlock(&queue->mutex);
     return(0);
@@ -1304,7 +1289,6 @@ uint16_t _hush_userpass(char *username,char *password,FILE *fp)
     {
         if ( line[0] == '#' )
             continue;
-        //printf("line.(%s) %p %p\n",line,strstr(line,(char *)"rpcuser"),strstr(line,(char *)"rpcpassword"));
         if ( (str= strstr(line,(char *)"rpcuser")) != 0 )
             rpcuser = parse_conf_line(str,(char *)"rpcuser");
         else if ( (str= strstr(line,(char *)"rpcpassword")) != 0 )
@@ -1312,7 +1296,6 @@ uint16_t _hush_userpass(char *username,char *password,FILE *fp)
         else if ( (str= strstr(line,(char *)"rpcport")) != 0 )
         {
             port = atoi(parse_conf_line(str,(char *)"rpcport"));
-            //fprintf(stderr,"rpcport.%u in file\n",port);
         }
     }
     if ( rpcuser != 0 && rpcpassword != 0 )
@@ -1320,7 +1303,6 @@ uint16_t _hush_userpass(char *username,char *password,FILE *fp)
         strcpy(username,rpcuser);
         strcpy(password,rpcpassword);
     }
-    //printf("rpcuser.(%s) rpcpassword.(%s) HUSHUSERPASS.(%s) %u\n",rpcuser,rpcpassword,HUSHUSERPASS,port);
     if ( rpcuser != 0 )
         free(rpcuser);
     if ( rpcpassword != 0 )
@@ -1340,7 +1322,7 @@ void hush_statefname(char *fname,char *symbol,char *str)
         else
         {
             if ( strcmp(symbol,"ZZZ") != 0 )
-                printf("unexpected fname.(%s) vs %s [%s] n.%d len.%d (%s)\n",fname,symbol,SMART_CHAIN_SYMBOL,n,len,&fname[len - n]);
+                LogPrintf("unexpected fname.(%s) vs %s [%s] n.%d len.%d (%s)\n",fname,symbol,SMART_CHAIN_SYMBOL,n,len,&fname[len - n]);
             return;
         }
     } else {
@@ -1353,7 +1335,6 @@ void hush_statefname(char *fname,char *symbol,char *str)
     if ( symbol != 0 && symbol[0] != 0)
     {
         strcat(fname,symbol);
-        //printf("statefname.(%s) -> (%s)\n",symbol,fname);
 #ifdef _WIN32
         strcat(fname,"\\");
 #else
@@ -1361,7 +1342,6 @@ void hush_statefname(char *fname,char *symbol,char *str)
 #endif
     }
     strcat(fname,str);
-    //printf("test.(%s) -> [%s] statename.(%s) %s\n",test,SMART_CHAIN_SYMBOL,symbol,fname);
 }
 
 void hush_configfile(char *symbol,uint16_t rpcport)
@@ -1398,14 +1378,13 @@ void hush_configfile(char *symbol,uint16_t rpcport)
             {
                 fprintf(fp,"rpcuser=user%u\nrpcpassword=pass%s\nrpcport=%u\nserver=1\ntxindex=1\nrpcworkqueue=4096\nrpcallowip=127.0.0.1\nrpcbind=127.0.0.1\n",crc,password,rpcport);
                 fclose(fp);
-                printf("Created (%s)\n",fname);
-            } else printf("Couldnt create (%s)\n",fname);
+                LogPrintf("Created (%s)\n",fname);
+            } else LogPrintf("Couldnt create (%s)\n",fname);
 #endif
         } else {
             _hush_userpass(myusername,mypassword,fp);
             mapArgs["-rpcpassword"] = mypassword;
             mapArgs["-rpcusername"] = myusername;
-            //fprintf(stderr,"myusername.(%s)\n",myusername);
             fclose(fp);
         }
     }
@@ -1429,9 +1408,8 @@ void hush_configfile(char *symbol,uint16_t rpcport)
             DRAGONX_PORT = hushport;
         sprintf(HUSHUSERPASS,"%s:%s",username,password);
         fclose(fp);
-        //printf("HUSH.(%s) -> userpass.(%s)\n",fname,HUSHUSERPASS);
     } else {
-        printf("could not open.(%s)\n",fname);
+        LogPrintf("could not open.(%s)\n",fname);
     }
 }
 
@@ -1466,13 +1444,13 @@ uint32_t hush_smartmagic(char *symbol,uint64_t supply,uint8_t *extraptr,int32_t
     {
         vcalc_sha256(0,hash.bytes,extraptr,extralen);
         crc0 = hash.uints[0];
-        fprintf(stderr,"DragonX raw magic=");
-        int32_t i; for (i=0; i<extralen; i++)
-            fprintf(stderr,"%02x",extraptr[i]);
-        fprintf(stderr," extralen=%d crc0=%x\n",extralen,crc0);
+        LogPrintf("DragonX raw magic extralen=%d crc0=%x\n",extralen,crc0);
     }
 
-    //TODO: why is this needed?
+    // Legacy special case: HUSH3 mainnet had a hardcoded network magic (HUSH_MAGIC)
+    // rather than the crc32-derived value used by every other chain. This branch is
+    // dead on DragonX (SMART_CHAIN_SYMBOL is "DRAGONX", never "HUSH3"); it is kept only
+    // so the function still reproduces HUSH3's magic if ever run with that symbol.
     const bool ishush3 = strncmp(symbol, "HUSH3",5) == 0 ? true : false;
     if(ishush3) {
         return HUSH_MAGIC;
@@ -1497,8 +1475,7 @@ uint16_t hush_port(char *symbol,uint64_t supply,uint32_t *magicp,uint8_t *extrap
         fprintf(stderr,"%s: extralen=%d\n",__func__,extralen);
 
     *magicp = hush_smartmagic(symbol,supply,extraptr,extralen);
-    //if(fDebug)
-        fprintf(stderr,"%s: extralen=%d, supply=%lu\n",__func__,extralen, supply);
+    LogPrintf("%s: extralen=%d, supply=%lu\n",__func__,extralen, supply);
 
     return(hush_smartport(*magicp,extralen));
 }
@@ -1519,16 +1496,19 @@ uint64_t hush_max_money()
     return hush_current_supply(10000000);
 }
 
-// This implements the Hush Emission Curve, the miner subsidy part,
-// and must be kept in sync with hush_commision() in hush_bitcoind.h!
-// Changing these functions are consensus changes!
-// Here Be Dragons! -- Duke Leto
+// This implements the emission curve (miner subsidy part) and must be kept in
+// sync with hush_commission() in hush_bitcoind.h! Changing these functions,
+// including the height literals below, is a CONSENSUS change.
+// NOTE: this TRANSITION boundary is 128 here, while hush_commission() uses 129.
+// This off-by-one between the two curves is a historical consensus quirk and is
+// deliberately left as-is: changing either value would be a consensus change.
 uint64_t hush_block_subsidy(int height)
 {
     uint64_t subsidy = 0;
     int32_t HALVING1 = GetArg("-z2zheight",340000);
     //TODO: support INTERVAL :(
     //int32_t INTERVAL = GetArg("-ac_halving1",840000);
+    // Consensus: TRANSITION is 128 here vs 129 in hush_commission(); do not change (see note above).
     int32_t TRANSITION = 128;
 
     if (height < TRANSITION) {
@@ -1564,14 +1544,14 @@ uint64_t hush_block_subsidy(int height)
             subsidy = 549316;
         } else if (height < 23860000) {
             subsidy = 274658;
-        } else if (height < 23860000) {
-            subsidy = 137329;
+        // removed unreachable duplicate `height < 23860000` (=> 137329); kept in sync
+        // with hush_commission() — the schedule drops straight to 68664 next.
         } else if (height < 25540000) {
             subsidy = 68664;
         } else if (height < 27220000) {
             subsidy = 34332;
-        } else if (height < 27220000) {
-            subsidy = 17166;
+        // removed unreachable duplicate `height < 27220000` (=> 17166); kept in sync
+        // with hush_commission() — the schedule drops straight to 8583 next.
         } else if (height < 28900000) {
             subsidy = 8583;
         } else if (height < 30580000) {
@@ -1611,7 +1591,9 @@ uint64_t hush_block_subsidy(int height)
     return subsidy;
 }
 
-// wrapper for more general supply curves of Hush Arrakis Chains
+// Wrapper for the more general supply curves used by assetchains (era/halving/decay driven).
+// On DragonX the reward comes from the -ac_reward/-ac_halving parameters set in hush_args();
+// the ishush3 branch below is a legacy special case that is dead on DragonX.
 uint64_t hush_sc_block_subsidy(int nHeight)
 {
     // Find current era, start from beginning reward, and determine current subsidy
@@ -1619,12 +1601,13 @@ uint64_t hush_sc_block_subsidy(int nHeight)
     int64_t subsidyDifference;
     int32_t numhalvings = 0, curEra = 0, sign = 1;
     static uint64_t cached_subsidy; static int32_t cached_numhalvings; static int cached_era;
+    // Legacy-HUSH3 detection: dead on DragonX (SMART_CHAIN_SYMBOL is "DRAGONX"), used only
+    // to route HUSH3 mainnet through its bespoke hush_block_subsidy() emission curve below.
     const bool ishush3 = strncmp(SMART_CHAIN_SYMBOL, "HUSH3",5) == 0 ? true : false;
-    // fprintf(stderr,"%s: ht=%d ishush3=%d\n", __func__, nHeight, ishush3);
 
     // check for backwards compat, older chains with no explicit rewards had 0.0001 block reward
     if ( ASSETCHAINS_ENDSUBSIDY[0] == 0 && ASSETCHAINS_REWARD[0] == 0 ) {
-        fprintf(stderr,"%s: defaulting to 0.0001 subsidy\n",__func__);
+        LogPrintf("%s: defaulting to 0.0001 subsidy\n",__func__);
         subsidy = 10000;
     } else if ( (ASSETCHAINS_ENDSUBSIDY[0] == 0 && ASSETCHAINS_REWARD[0] != 0) || ASSETCHAINS_ENDSUBSIDY[0] != 0 ) {
         // if we have an end block in the first era, find our current era
@@ -1656,10 +1639,11 @@ uint64_t hush_sc_block_subsidy(int nHeight)
                         if(fDebug)
                             fprintf(stderr,"%s: HUSH3 subsidy=%ld at height=%d\n",__func__,subsidy,nHeight);
                     } else if ( (numhalvings = ((nHeight - nStart) / ASSETCHAINS_HALVING[curEra])) > 0 ) {
-                        // The code below is not compatible with HUSH3 mainnet
+                        // Generic halving/decay path used by DragonX and other assetchains.
+                        // (Legacy HUSH3 mainnet did NOT use this path; it took the ishush3
+                        // branch above, which reproduces its bespoke emission curve.)
                         if ( ASSETCHAINS_DECAY[curEra] == 0 ) {
                             subsidy >>= numhalvings;
-                            // fprintf(stderr,"%s: no decay, numhalvings.%d curEra.%d subsidy.%ld nStart.%ld\n",__func__, numhalvings, curEra, subsidy, nStart);
                         } else if ( ASSETCHAINS_DECAY[curEra] == 100000000 && ASSETCHAINS_ENDSUBSIDY[curEra] != 0 ) {
                             if ( curEra == ASSETCHAINS_LASTERA )
                             {
@@ -1675,12 +1659,11 @@ uint64_t hush_sc_block_subsidy(int nHeight)
                             }
                             denominator = ASSETCHAINS_ENDSUBSIDY[curEra] - nStart;
                             numerator = denominator - ((ASSETCHAINS_ENDSUBSIDY[curEra] - nHeight) + ((nHeight - nStart) % ASSETCHAINS_HALVING[curEra]));
-                            // fprintf(stderr,"%s: numerator=%ld , denominator=%ld at height=%d\n",__func__,numerator, denominator,nHeight);
                             if( denominator ) {
                                 subsidy = subsidy - sign * ((subsidyDifference * numerator) / denominator);
                             } else {
-                                fprintf(stderr,"%s: invalid denominator=%ld !\n",  __func__, denominator);
-                                fprintf(stderr,"%s: defaulting to 0.0001 subsidy\n",__func__);
+                                LogPrintf("%s: invalid denominator=%ld !\n",  __func__, denominator);
+                                LogPrintf("%s: defaulting to 0.0001 subsidy\n",__func__);
                                 subsidy = 10000;
                             }
                         } else {
@@ -1698,13 +1681,13 @@ uint64_t hush_sc_block_subsidy(int nHeight)
                 }
             }
         } else {
-            fprintf(stderr,"%s: curEra.%d > lastEra.%lu\n", __func__, curEra, ASSETCHAINS_LASTERA);
+            LogPrintf("%s: curEra.%d > lastEra.%lu\n", __func__, curEra, ASSETCHAINS_LASTERA);
         }
     }
     uint32_t magicExtra = ASSETCHAINS_STAKED ? ASSETCHAINS_MAGIC : (ASSETCHAINS_MAGIC & 0xffffff);
     if ( ASSETCHAINS_SUPPLY > 10000000000 ) // over 10 billion?
     {
-        fprintf(stderr,"%s: Detected supply over 10 billion, danger zone!\n",__func__);
+        LogPrintf("%s: Detected supply over 10 billion, danger zone!\n",__func__);
         if ( nHeight <= ASSETCHAINS_SUPPLY/1000000000 )
         {
             subsidy += (uint64_t)1000000000 * COIN;
@@ -1782,7 +1765,7 @@ void hush_args(char *argv0)
                     IS_HUSH_NOTARY     = 1;
                     HUSH_MININGTHREADS = 1;
                     mapArgs ["-genproclimit"] = itostr(HUSH_MININGTHREADS);
-                    fprintf(stderr,"running as notary.%d %s\n",i,notaries_list[hush_season-1][i][0]);
+                    LogPrintf("running as notary.%d %s\n",i,notaries_list[hush_season-1][i][0]);
                     break;
                 }
             }
@@ -1815,7 +1798,7 @@ void hush_args(char *argv0)
 
     vector<string> more_nodes = mapMultiArgs["-addnode"];
     if (more_nodes.size() > 0) {
-        fprintf(stderr,"%s: Adding %lu more nodes via custom -addnode arguments\n", __func__, more_nodes.size() );
+        LogPrint("net", "%s: Adding %lu more nodes via custom -addnode arguments\n", __func__, more_nodes.size() );
     }
     // Add default DRAGONX nodes after custom addnodes, if applicable
     if(DRAGONX_nodes.size() > 0) {
@@ -1857,19 +1840,19 @@ void hush_args(char *argv0)
         if ( i > 1 && ccEnablesHeight[i-2] == ecode )
             break;
         if ( ecode > 255 || ecode < 0 )
-            fprintf(stderr, "ac_ccactivateht: invalid evalcode.%i must be between 0 and 256.\n", ecode);
+            LogPrintf("ac_ccactivateht: invalid evalcode.%i must be between 0 and 256.\n", ecode);
         else if ( ht > 0 )
         {
             // update global map.
             mapHeightEvalActivate[ecode] = ht;
-            fprintf(stderr, "ac_ccactivateht: ecode.%i activates at height.%i\n", ecode, mapHeightEvalActivate[ecode]);
+            LogPrintf("ac_ccactivateht: ecode.%i activates at height.%i\n", ecode, mapHeightEvalActivate[ecode]);
         }
         i++;
     }
     
     if ( (HUSH_REWIND= GetArg("-rewind",0)) != 0 )
     {
-        printf("HUSH_REWIND %d\n",HUSH_REWIND);
+        LogPrintf("HUSH_REWIND %d\n",HUSH_REWIND);
     }
     HUSH_EARLYTXID = Parseuint256(GetArg("-earlytxid","0").c_str());    
     ASSETCHAINS_EARLYTXIDCONTRACT = GetArg("-ac_earlytxidcontract",0);
@@ -1887,7 +1870,7 @@ void hush_args(char *argv0)
                 STAKING_MIN_DIFF = ASSETCHAINS_MINDIFF[i];
                 // only worth mentioning if it's not equihash
                 if (ASSETCHAINS_ALGO != ASSETCHAINS_EQUIHASH)
-                    printf("ASSETCHAINS_ALGO, algorithm set to %s\n", selectedAlgo.c_str());
+                    LogPrintf("ASSETCHAINS_ALGO, algorithm set to %s\n", selectedAlgo.c_str());
                 break;
             }
         }
@@ -1897,11 +1880,11 @@ void hush_args(char *argv0)
             {
                 printf("equihash values N.%li and K.%li are not currently available\n", ASSETCHAINS_NK[0], ASSETCHAINS_NK[1]);
                 exit(0);
-            } else printf("ASSETCHAINS_ALGO, algorithm set to equihash with N.%li and K.%li\n", ASSETCHAINS_NK[0], ASSETCHAINS_NK[1]);
+            } else LogPrintf("ASSETCHAINS_ALGO, algorithm set to equihash with N.%li and K.%li\n", ASSETCHAINS_NK[0], ASSETCHAINS_NK[1]);
         }
         if (i == ASSETCHAINS_NUMALGOS)
         {
-            printf("ASSETCHAINS_ALGO, %s not supported. using equihash\n", selectedAlgo.c_str());
+            LogPrintf("ASSETCHAINS_ALGO, %s not supported. using equihash\n", selectedAlgo.c_str());
         }
 
         // Set our symbol from -ac_name value
@@ -1916,14 +1899,14 @@ void hush_args(char *argv0)
             } else {
                 ASSETCHAINS_RANDOMX_VALIDATION = 1; // all other RandomX HACs: enforce from height 1
             }
-            printf("ASSETCHAINS_RANDOMX_VALIDATION set to %d for %s\n", ASSETCHAINS_RANDOMX_VALIDATION, SMART_CHAIN_SYMBOL);
+            LogPrintf("ASSETCHAINS_RANDOMX_VALIDATION set to %d for %s\n", ASSETCHAINS_RANDOMX_VALIDATION, SMART_CHAIN_SYMBOL);
         }
 
         ASSETCHAINS_LASTERA = GetArg("-ac_eras", 1);
         if ( ASSETCHAINS_LASTERA < 1 || ASSETCHAINS_LASTERA > ASSETCHAINS_MAX_ERAS )
         {
             ASSETCHAINS_LASTERA = 1;
-            printf("ASSETCHAINS_LASTERA, if specified, must be between 1 and %u. ASSETCHAINS_LASTERA set to %lu\n", ASSETCHAINS_MAX_ERAS, ASSETCHAINS_LASTERA);
+            LogPrintf("ASSETCHAINS_LASTERA, if specified, must be between 1 and %u. ASSETCHAINS_LASTERA set to %lu\n", ASSETCHAINS_MAX_ERAS, ASSETCHAINS_LASTERA);
         }
         ASSETCHAINS_LASTERA -= 1;
         if(fDebug)
@@ -1934,7 +1917,7 @@ void hush_args(char *argv0)
         ASSETCHAINS_TIMEUNLOCKTO = GetArg("-ac_timeunlockto", 0);
         if ( ASSETCHAINS_TIMEUNLOCKFROM > ASSETCHAINS_TIMEUNLOCKTO )
         {
-            printf("ASSETCHAINS_TIMELOCKGTE - must specify valid ac_timeunlockfrom and ac_timeunlockto\n");
+            LogPrintf("ASSETCHAINS_TIMELOCKGTE - must specify valid ac_timeunlockfrom and ac_timeunlockto\n");
             ASSETCHAINS_TIMELOCKGTE    = _ASSETCHAINS_TIMELOCKOFF;
             ASSETCHAINS_TIMEUNLOCKFROM = ASSETCHAINS_TIMEUNLOCKTO = 0;
         }
@@ -1953,7 +1936,7 @@ void hush_args(char *argv0)
         ASSETCHAINS_SCRIPTPUB       = GetArg("-ac_script","");
         
 
-        fprintf(stderr,"%s: Setting custom %s reward isdragonx=%d reward,halving,subsidy chain values...\n",__func__, SMART_CHAIN_SYMBOL, isdragonx);
+        LogPrintf("%s: Setting custom %s reward isdragonx=%d reward,halving,subsidy chain values...\n",__func__, SMART_CHAIN_SYMBOL, isdragonx);
         if(isdragonx) {
             // DragonX chain parameters (previously set via wrapper script)
             // -ac_name=DRAGONX -ac_algo=randomx -ac_halving=3500000 -ac_reward=300000000 -ac_blocktime=36 -ac_private=1
@@ -1969,12 +1952,12 @@ void hush_args(char *argv0)
             if ( ASSETCHAINS_DECAY[i] == 100000000 && ASSETCHAINS_ENDSUBSIDY == 0 )
             {
                 ASSETCHAINS_DECAY[i] = 0;
-                printf("ERA%u: ASSETCHAINS_DECAY of 100000000 means linear and that needs ASSETCHAINS_ENDSUBSIDY\n", i);
+                LogPrintf("ERA%u: ASSETCHAINS_DECAY of 100000000 means linear and that needs ASSETCHAINS_ENDSUBSIDY\n", i);
             }
             else if ( ASSETCHAINS_DECAY[i] > 100000000 )
             {
                 ASSETCHAINS_DECAY[i] = 0;
-                printf("ERA%u: ASSETCHAINS_DECAY cant be more than 100000000\n", i);
+                LogPrintf("ERA%u: ASSETCHAINS_DECAY cant be more than 100000000\n", i);
             }
         }
 
@@ -2000,21 +1983,15 @@ void hush_args(char *argv0)
             SplitStr(GetArg("-ac_stocks",""),  ASSETCHAINS_STOCKS);
             if ( ASSETCHAINS_STOCKS.size() > 0 )
                 ASSETCHAINS_CBOPRET |= 8;
-            for (i=0; i<ASSETCHAINS_PRICES.size(); i++)
-                fprintf(stderr,"%s ",ASSETCHAINS_PRICES[i].c_str());
-            fprintf(stderr,"%d -ac_prices\n",(int32_t)ASSETCHAINS_PRICES.size());
-            for (i=0; i<ASSETCHAINS_STOCKS.size(); i++)
-                fprintf(stderr,"%s ",ASSETCHAINS_STOCKS[i].c_str());
-            fprintf(stderr,"%d -ac_stocks\n",(int32_t)ASSETCHAINS_STOCKS.size());
+            LogPrintf("%d -ac_prices\n",(int32_t)ASSETCHAINS_PRICES.size());
+            LogPrintf("%d -ac_stocks\n",(int32_t)ASSETCHAINS_STOCKS.size());
         }
         hexstr = GetArg("-ac_mineropret","");
         if ( hexstr.size() != 0 )
         {
             Mineropret.resize(hexstr.size()/2);
             decode_hex(Mineropret.data(),hexstr.size()/2,(char *)hexstr.c_str());
-            for (i=0; i<Mineropret.size(); i++)
-                fprintf(stderr,"%02x",Mineropret[i]);
-            fprintf(stderr," Mineropret\n");
+            LogPrintf(" Mineropret\n");
         }
         if ( ASSETCHAINS_COMMISSION != 0 && ASSETCHAINS_FOUNDERS_REWARD != 0 )
         {
@@ -2026,7 +2003,8 @@ void hush_args(char *argv0)
             uint8_t prevCCi = 0;
             ASSETCHAINS_CCLIB = GetArg("-ac_cclib","hush3");
 
-            // these are the enabled CCs on HUSH3 mainnet
+            // Default CC set inherited from legacy HUSH3 mainnet; only used when a chain
+            // enables CryptoConditions and does not override -ac_ccenable.
             Split(GetArg("-ac_ccenable","228,234,235,236,241"), sizeof(ccenables)/sizeof(*ccenables),  ccenables, 0);
             for (i=nonz=0; i<0x100; i++)
             {
@@ -2034,10 +2012,9 @@ void hush_args(char *argv0)
                 {
                     nonz++;
                     prevCCi = ccenables[i];
-                    fprintf(stderr,"%d ",(uint8_t)(ccenables[i] & 0xff));
                 }
             }
-            fprintf(stderr,"nonz.%d ccenables[]\n",nonz);
+            LogPrintf("nonz.%d ccenables[]\n",nonz);
             if ( nonz > 0 )
             {
                 for (i=0; i<256; i++)
@@ -2137,9 +2114,9 @@ void hush_args(char *argv0)
                 if ( ASSETCHAINS_FOUNDERS_REWARD == 0 )
                 {
                     ASSETCHAINS_COMMISSION = 53846154; // maps to 35%
-                    printf("ASSETCHAINS_COMMISSION defaulted to 35%% when founders reward active\n");
+                    LogPrintf("ASSETCHAINS_COMMISSION defaulted to 35%% when founders reward active\n");
                 } else {
-                    printf("ASSETCHAINS_FOUNDERS_REWARD set to %ld\n", ASSETCHAINS_FOUNDERS_REWARD);
+                    LogPrintf("ASSETCHAINS_FOUNDERS_REWARD set to %ld\n", ASSETCHAINS_FOUNDERS_REWARD);
                 }
                 /*else if ( ASSETCHAINS_SELFIMPORT.size() == 0 )
                 {
@@ -2151,12 +2128,12 @@ void hush_args(char *argv0)
             if ( ASSETCHAINS_COMMISSION != 0 )
             {
                 ASSETCHAINS_COMMISSION = 0;
-                printf("ASSETCHAINS_COMMISSION needs an ASSETCHAINS_OVERRIDE_PUBKEY and cant be more than 100000000 (100%%)\n");
+                LogPrintf("ASSETCHAINS_COMMISSION needs an ASSETCHAINS_OVERRIDE_PUBKEY and cant be more than 100000000 (100%%)\n");
             }
             if ( ASSETCHAINS_FOUNDERS != 0 )
             {
                 ASSETCHAINS_FOUNDERS = 0;
-                printf("ASSETCHAINS_FOUNDERS needs an ASSETCHAINS_OVERRIDE_PUBKEY or ASSETCHAINS_SCRIPTPUB\n");
+                LogPrintf("ASSETCHAINS_FOUNDERS needs an ASSETCHAINS_OVERRIDE_PUBKEY or ASSETCHAINS_SCRIPTPUB\n");
             }
         }
 
@@ -2224,7 +2201,7 @@ void hush_args(char *argv0)
                 // NOTE: Hush does not use this, we use -ac_script to implement our FR -- Duke
                 if ( ASSETCHAINS_FOUNDERS_REWARD != 0 )
                 {
-                    fprintf(stderr, "set founders reward.%lld\n",(long long)ASSETCHAINS_FOUNDERS_REWARD);
+                    LogPrintf("set founders reward.%lld\n",(long long)ASSETCHAINS_FOUNDERS_REWARD);
                     extralen += dragon_rwnum(1,&extraptr[extralen],sizeof(ASSETCHAINS_FOUNDERS_REWARD),(void *)&ASSETCHAINS_FOUNDERS_REWARD);
                 }
             }
@@ -2233,14 +2210,12 @@ void hush_args(char *argv0)
                 decode_hex(&extraptr[extralen],ASSETCHAINS_SCRIPTPUB.size()/2,(char *)ASSETCHAINS_SCRIPTPUB.c_str());
                 extralen += ASSETCHAINS_SCRIPTPUB.size()/2;
                 //extralen += dragon_rwnum(1,&extraptr[extralen],(int32_t)ASSETCHAINS_SCRIPTPUB.size(),(void *)ASSETCHAINS_SCRIPTPUB.c_str());
-                fprintf(stderr,"append ac_script %s\n",ASSETCHAINS_SCRIPTPUB.c_str());
+                LogPrintf("append ac_script %s\n",ASSETCHAINS_SCRIPTPUB.c_str());
             }
             if ( ASSETCHAINS_SELFIMPORT.size() > 0 )
             {
                 memcpy(&extraptr[extralen],(char *)ASSETCHAINS_SELFIMPORT.c_str(),ASSETCHAINS_SELFIMPORT.size());
-                for (i=0; i<ASSETCHAINS_SELFIMPORT.size(); i++)
-                    fprintf(stderr,"%c",extraptr[extralen+i]);
-                fprintf(stderr," selfimport\n");
+                LogPrintf(" selfimport\n");
                 extralen += ASSETCHAINS_SELFIMPORT.size();
             }
             if ( ASSETCHAINS_BEAMPORT != 0 )
@@ -2250,7 +2225,7 @@ void hush_args(char *argv0)
             if ( ASSETCHAINS_MARMARA != 0 )
                 extraptr[extralen++] = ASSETCHAINS_MARMARA;
 
-            fprintf(stderr,"extralen.%d before disable bits\n",extralen);
+            LogPrintf("extralen.%d before disable bits\n",extralen);
 
             if ( nonz > 0 ) {
                 memcpy(&extraptr[extralen],disablebits,sizeof(disablebits));
@@ -2261,14 +2236,13 @@ void hush_args(char *argv0)
                 for (i=0; i<ASSETCHAINS_CCLIB.size(); i++)
                 {
                     extraptr[extralen++] = ASSETCHAINS_CCLIB[i];
-                    fprintf(stderr,"%c",ASSETCHAINS_CCLIB[i]);
                 }
-                fprintf(stderr," <- CCLIB name\n");
+                LogPrintf(" <- CCLIB name\n");
             }
 
             if ( ASSETCHAINS_BLOCKTIME != 60 ) {
                 extralen += dragon_rwnum(1,&extraptr[extralen],sizeof(ASSETCHAINS_BLOCKTIME),(void *)&ASSETCHAINS_BLOCKTIME);
-                fprintf(stderr,"%s: ASSETCHAINS_BLOCKTIME=%d, extralen=%d\n", __func__, ASSETCHAINS_BLOCKTIME, extralen);
+                LogPrintf("%s: ASSETCHAINS_BLOCKTIME=%d, extralen=%d\n", __func__, ASSETCHAINS_BLOCKTIME, extralen);
             }
 
             if ( Mineropret.size() != 0 )
@@ -2299,7 +2273,7 @@ void hush_args(char *argv0)
                 }
                 //hush_pricesinit();
                 hush_cbopretupdate(1); // will set Mineropret
-                fprintf(stderr,"This blockchain uses data produced from CoinDesk Bitcoin Price Index\n");
+                LogPrintf("This blockchain uses data produced from CoinDesk Bitcoin Price Index\n");
             }
             if ( ASSETCHAINS_NK[0] != 0 && ASSETCHAINS_NK[1] != 0 )
             {
@@ -2355,13 +2329,12 @@ void hush_args(char *argv0)
             MAX_MONEY = HUSH_MAXNVALUE;
         if(fDebug)
             fprintf(stderr,"MAX_MONEY %llu %.8f\n",(long long)MAX_MONEY,(double)MAX_MONEY/SATOSHIDEN);
-        //printf("baseid.%d MAX_MONEY.%s %.8f\n",baseid,SMART_CHAIN_SYMBOL,(double)MAX_MONEY/SATOSHIDEN);
         uint16_t tmpport = hush_port(SMART_CHAIN_SYMBOL,ASSETCHAINS_SUPPLY,&ASSETCHAINS_MAGIC,extraptr,extralen);
         if ( GetArg("-port",0) != 0 )
         {
             ASSETCHAINS_P2PPORT = GetArg("-port",0);
             if(ishush3) {
-                fprintf(stderr,"set HUSH3 p2pport.%u\n",ASSETCHAINS_P2PPORT);
+                LogPrintf("set HUSH3 p2pport.%u\n",ASSETCHAINS_P2PPORT);
                 ASSETCHAINS_P2PPORT = 18030;
             }
         if(fDebug)
@@ -2377,7 +2350,6 @@ void hush_args(char *argv0)
             boost::this_thread::sleep(boost::posix_time::milliseconds(3000));
 #endif
         }
-        //fprintf(stderr,"Got datadir.(%s)\n",dirname);
         if ( SMART_CHAIN_SYMBOL[0] != 0 )
         {
             int32_t hush_baseid(char *origbase);
@@ -2395,7 +2367,6 @@ void hush_args(char *argv0)
                 fprintf(stderr,"ac_cbmaturity must be >0, shutting down\n");
                 StartShutdown();
             }
-            //fprintf(stderr,"ASSETCHAINS_RPCPORT (%s) %u\n",SMART_CHAIN_SYMBOL,ASSETCHAINS_RPCPORT);
         }
         if ( ASSETCHAINS_RPCPORT == 0 )
             ASSETCHAINS_RPCPORT = ASSETCHAINS_P2PPORT + 1;
@@ -2411,13 +2382,16 @@ void hush_args(char *argv0)
             if ( HUSH_CCACTIVATE != 0 )
             {
                 ASSETCHAINS_CC = 2;
-                fprintf(stderr,"smart utxo CC contracts will activate at height.%d\n",HUSH_CCACTIVATE);
+                LogPrintf("smart utxo CC contracts will activate at height.%d\n",HUSH_CCACTIVATE);
             } else if ( ccEnablesHeight[0] != 0 ) {
                 ASSETCHAINS_CC = 2;
-                fprintf(stderr,"smart utxo CC contract %d will activate at height.%d\n",(int32_t)ccEnablesHeight[0],(int32_t)ccEnablesHeight[1]);
+                LogPrintf("smart utxo CC contract %d will activate at height.%d\n",(int32_t)ccEnablesHeight[0],(int32_t)ccEnablesHeight[1]);
             }
         }
     } else {
+        // Legacy fallback path taken only when no -ac_name is set (SMART_CHAIN_SYMBOL empty).
+        // Dead on DragonX, which always runs with -ac_name=DRAGONX. The HUSH3/Bitcoin conf
+        // paths and default ports below are historical and left as-is for backwards compat.
         char fname[512],username[512],password[4096]; int32_t iter; FILE *fp;
         ASSETCHAINS_P2PPORT = 7770;
         ASSETCHAINS_RPCPORT = 7771;
@@ -2448,8 +2422,7 @@ void hush_args(char *argv0)
                 _hush_userpass(username,password,fp);
                 sprintf(iter == 0 ? HUSHUSERPASS : BTCUSERPASS,"%s:%s",username,password);
                 fclose(fp);
-                //printf("HUSH.(%s) -> userpass.(%s)\n",fname,HUSHUSERPASS);
-            } //else printf("couldnt open.(%s)\n",fname);
+            }
             if ( IS_HUSH_NOTARY == 0 )
                 break;
         }
@@ -2458,7 +2431,6 @@ void hush_args(char *argv0)
     if ( SMART_CHAIN_SYMBOL[0] != 0 )
     {
         BITCOIND_RPCPORT = GetArg("-rpcport", ASSETCHAINS_RPCPORT);
-        //fprintf(stderr,"(%s) port.%u chain params initialized\n",SMART_CHAIN_SYMBOL,BITCOIND_RPCPORT);
 
         // Set custom cc rulse for chains here
         if ( strcmp("HUSH3",SMART_CHAIN_SYMBOL) == 0 ) {
@@ -2514,7 +2486,7 @@ void hush_prefetch(FILE *fp)
         {
             rewind(fp);
             while ( fread(ignore,1,incr,fp) == incr ) // prefetch
-                fprintf(stderr,".");
+                ;
             free(ignore);
         }
     }

src/init.cpp

@@ -121,7 +121,11 @@ static const char* FEE_ESTIMATES_FILENAME="fee_estimates.dat";
 
 static const char* DEFAULT_ASMAP_FILENAME="asmap.dat";
 
-CClientUIInterface uiInterface; // Declared but not defined in ui_interface.h
+// LevelDB read-cache size (bytes) for the notarizations (dPoW) DB. Non-consensus: just the
+// in-memory cache the DB is opened with; the value here does not affect validation.
+static const size_t NOTARIZATION_DB_CACHE_BYTES = 100 * 1024 * 1024; // 100 MiB
+
+CClientUIInterface uiInterface; // global UI callback dispatcher (declared extern in ui_interface.h)
 
 // Shutdown
 //
@@ -149,7 +153,7 @@ std::atomic<bool> fRequestShutdown(false);
 void StartShutdown()
 {
     if(fDebug) {
-	    fprintf(stderr,"%s: fRequestShudown=true\n", __FUNCTION__);
+	    fprintf(stderr,"%s: fRequestShutdown=true\n", __FUNCTION__);
     }
     fRequestShutdown = true;
 }
@@ -491,9 +495,11 @@ std::string HelpMessage(HelpMessageMode mode)
     strUsage += HelpMessageOpt("-zsweepexclude", _("Addresses to exclude from sweeping (default none)"));
 
     strUsage += HelpMessageOpt("-autoshield", _("Automatically shield matured coinbase (mining rewards) into a seed-derived wallet z-address (default: true for wallets created or restored by this software, false when the HD seed provenance is unknown). No-op when not mining or wallet is locked."));
-    strUsage += HelpMessageOpt("-autoshieldinterval", strprintf(_("Block interval between automatic coinbase-shielding rounds (default: %i, min 5)"), 25));
+    strUsage += HelpMessageOpt("-autoshieldinterval", strprintf(_("Block interval between automatic coinbase-shielding rounds (default: %i, min %i)"), DEFAULT_AUTOSHIELD_INTERVAL, MIN_AUTOSHIELD_INTERVAL));
     strUsage += HelpMessageOpt("-autoshieldaddress=<zaddr>", _("Destination Sapling z-address for auto-shielded coinbase (default: reuse or create a wallet z-address). Must be spendable by this wallet."));
-    strUsage += HelpMessageOpt("-autoshieldfee", strprintf(_("Fee in puposhis for automatic coinbase-shielding transactions (default: %i)"), 10000));
+    strUsage += HelpMessageOpt("-autoshieldfee", strprintf(_("Fee in puposhis for automatic coinbase-shielding transactions (default: %i)"), DEFAULT_AUTOSHIELD_FEE));
+
+    strUsage += HelpMessageOpt("-sietch-min-zouts=<n>", strprintf(_("Minimum number of shielded (Sapling) outputs Sietch adds to each z_sendmany transaction as decoys, strengthening amount/linkability privacy. Higher values add privacy at the cost of larger transactions (default: %u, clamped to the range 3-50)"), 7));
     strUsage += HelpMessageOpt("-autoshieldminutxos", strprintf(_("Only auto-shield once at least this many matured coinbase UTXOs exist (default: %i)"), 1));
 
     strUsage += HelpMessageOpt("-deletetx", _("Enable Old Transaction Deletion"));
@@ -615,12 +621,13 @@ std::string HelpMessage(HelpMessageMode mode)
 
     strUsage += HelpMessageGroup(_("Stratum server options:"));
     strUsage += HelpMessageOpt("-stratum", _("Enable stratum server (default: off)"));
+    strUsage += HelpMessageOpt("-stratumtarget=<hex>", _("Pool share target (64-hex, big-endian; larger = easier). Default is the diff-1 target. Useful for solo/low-difficulty mining."));
     strUsage += HelpMessageOpt("-stratumaddress=<address>", _("Mining address to use when special address of 'x' is sent by miner (default: none)"));
     strUsage += HelpMessageOpt("-stratumbind=<ipaddr>", _("Bind to given address to listen for Stratum work requests. Use [host]:port notation for IPv6. This option can be specified multiple times (default: bind to all interfaces)"));
     strUsage += HelpMessageOpt("-stratumport=<port>", strprintf(_("Listen for Stratum work requests on <port> (default: %u or testnet: %u)"), BaseParams().StratumPort(), BaseParams().StratumPort()));
     strUsage += HelpMessageOpt("-stratumallowip=<ip>", _("Allow Stratum work requests from specified source. Valid for <ip> are a single IP (e.g. 1.2.3.4), a network/netmask (e.g. 1.2.3.4/255.255.255.0) or a network/CIDR (e.g. 1.2.3.4/24). This option can be specified multiple times"));
 
-    // "ac" stands for "affects consensus" or Arrakis Chain
+    // "ac" prefix is inherited from the Komodo asset-chain lineage ("asset chain"/"affects consensus")
     strUsage += HelpMessageGroup(_("DragonX Chain options:"));
     strUsage += HelpMessageOpt("-ac_algo", _("Choose PoW mining algorithm, either 'equihash' or 'randomx'. default is Equihash (200,9)"));
     strUsage += HelpMessageOpt("-ac_blocktime", _("Block time in seconds, default is 60"));
@@ -787,7 +794,7 @@ void ThreadImport(std::vector<boost::filesystem::path> vImportFiles)
 }
 
 /** Sanity checks
- *  Ensure that Hush is running in a usable environment with all
+ *  Ensure that DragonX is running in a usable environment with all
  *  necessary library support.
  */
 bool InitSanityCheck(void)
@@ -908,7 +915,7 @@ static void ZC_LoadParams(const CChainParams& chainparams)
     
     if (!found) {
         // The traditional place Zcash params are stored, should not hit this case in normal circumstances,
-        // as Hush packages sapling params now
+        // as DragonX packages sapling params now
         sapling_spend  = ZC_GetParamsDir() / "sapling-spend.params";
         sapling_output = ZC_GetParamsDir() / "sapling-output.params";
         if (files_exist(sapling_spend, sapling_output)) {
@@ -927,7 +934,7 @@ static void ZC_LoadParams(const CChainParams& chainparams)
     boost::system::error_code ec1, ec2;
     boost::uintmax_t spend_size  = file_size(sapling_spend, ec1);
     boost::uintmax_t output_size = file_size(sapling_output, ec2);
-    fprintf(stderr,"Sapling spend: %d bytes, output: %d bytes\n", (int)spend_size, (int)output_size);
+    LogPrintf("Sapling spend: %d bytes, output: %d bytes\n", (int)spend_size, (int)output_size);
 
     // We could check sha hashes, but we mostly want to detect on-disk file corruption
     // or people having a full harddrive. Full validation happens in librustzcash_init_zksnark_params
@@ -980,11 +987,15 @@ static void ZC_LoadParams(const CChainParams& chainparams)
 
 bool AppInitServers(boost::thread_group& threadGroup)
 {
-    fprintf(stderr,"%s: start\n",__func__);
+    LogPrintf("%s: start\n",__func__);
     RPCServer::OnStopped(&OnRPCStopped);
     RPCServer::OnPreCommand(&OnRPCPreCommand);
     if (!InitHTTPServer())
         return false;
+    // Stratum server (stratum.cpp) supports DragonX's RandomX PoW (32-byte solution + per-height
+    // RandomX key conveyed to the miner) as well as legacy Equihash, branched on ASSETCHAINS_ALGO.
+    // Off by default (DEFAULT_STRATUM_ENABLE=false); only -stratum turns it on. Needs a RandomX-aware
+    // stratum miner (see contrib/ reference miner) — stock Equihash/Monero miners won't work.
     if (GetBoolArg("-stratum", DEFAULT_STRATUM_ENABLE) && !InitStratumServer())
         return false;
     if (!StartRPC())
@@ -998,7 +1009,7 @@ bool AppInitServers(boost::thread_group& threadGroup)
     return true;
 }
 
-/** Initialize Hush.
+/** Initialize DragonX.
  *  @pre Parameters should be parsed and config file should be read.
  */
 extern int32_t HUSH_REWIND;
@@ -1122,7 +1133,6 @@ static void AdjustCoinCacheForMemoryPressure()
 
 bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
 {
-	//fprintf(stderr,"%s start\n", __FUNCTION__);
     // ********************************************************* Step 1: setup
 #ifdef _MSC_VER
     // Turn off Microsoft heap dump noise
@@ -1159,7 +1169,6 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
             return InitError("Error: -sysperms is not allowed in combination with enabled wallet functionality");
 #endif
     } else {
-	    //fprintf(stderr,"%s setting umask\n", __FUNCTION__);
         umask(077);
     }
 
@@ -1177,12 +1186,10 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
 
     std::set_new_handler(new_handler_terminate);
 
-    //fprintf(stderr,"%s: set signal handlers\n", __FUNCTION__);
 
     // ********************************************************* Step 2: parameter interactions
     const CChainParams& chainparams = Params();
 
-    //fprintf(stderr,"%s: got chain params\n", __FUNCTION__);
 
     // Set this early so that experimental features are correctly enabled/disabled
     fExperimentalMode = GetBoolArg("-experimentalfeatures", true);
@@ -1193,11 +1200,10 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
     // Fail early if user has set experimental options without the global flag
     if (!fExperimentalMode) {
         if (mapArgs.count("-developerencryptwallet")) {
-			fprintf(stderr,"%s wallet encryption error\n", __FUNCTION__);
+			LogPrintf("%s wallet encryption error\n", __FUNCTION__);
             return InitError(_("Wallet encryption requires -experimentalfeatures."));
         }
     }
-	//fprintf(stderr,"%s tik2\n", __FUNCTION__);
 
     // Set this early so that parameter interactions go to console
     fPrintToConsole = GetBoolArg("-printtoconsole", false);
@@ -1206,7 +1212,7 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
 
 
     LogPrintf("\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n");
-    LogPrintf("Hush version %s (%s)\n", FormatFullVersion());
+    LogPrintf("DragonX version %s (%s)\n", FormatFullVersion());
 
 
 #ifdef DEBUG_LOCKORDER
@@ -1226,7 +1232,6 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
             LogPrintf("%s: parameter interaction: -allowbind set -> setting -listen=1\n", __func__);
     }
 
-	//fprintf(stderr,"%s tik3\n", __FUNCTION__);
     if (mapArgs.count("-connect") && mapMultiArgs["-connect"].size() > 0) {
         // when only connecting to trusted nodes, do not seed via DNS, or listen by default
         if (SoftSetBoolArg("-dnsseed", false))
@@ -1258,7 +1263,7 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
             LogPrintf("%s: parameter interaction: -externalip set -> setting -discover=0\n", __func__);
     }
 
-    // Read asmap file by default for HUSH3 and all Hush Arrakis Chains
+    // Read asmap file by default on DragonX
     if (GetArg("-asmap",1)) {
         fs::path asmap_path = fs::path(GetArg("-asmap", ""));
 
@@ -1276,36 +1281,36 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
         if (asmap_path.empty()) {
             // Most binaries will have it in PWD
             asmap_path = pwd / DEFAULT_ASMAP_FILENAME;
-            printf("%s: looking for asmap file at %s\n", __func__, asmap_path.c_str() );
+            LogPrint("net", "%s: looking for asmap file at %s\n", __func__, asmap_path.string().c_str() );
             if(fs::exists(asmap_path)) {
-                printf("%s: found asmap file at %s\n", __func__, asmap_path.c_str() );
+                LogPrint("net", "%s: found asmap file at %s\n", __func__, asmap_path.string().c_str() );
             } else {
                 // Debian Packages
                 asmap_path = fs::path("/usr/share/hush") / DEFAULT_ASMAP_FILENAME;
-                printf("%s: looking for asmap file at %s\n", __func__, asmap_path.c_str() );
+                LogPrint("net", "%s: looking for asmap file at %s\n", __func__, asmap_path.string().c_str() );
                 if(fs::exists(asmap_path)) {
-                    printf("%s: found asmap file at %s\n", __func__, asmap_path.c_str() );
+                    LogPrint("net", "%s: found asmap file at %s\n", __func__, asmap_path.string().c_str() );
                 } else {
                     // Source code
                     asmap_path = contrib / DEFAULT_ASMAP_FILENAME;
-                    printf("%s: looking for asmap file at %s\n", __func__, asmap_path.c_str() );
+                    LogPrint("net", "%s: looking for asmap file at %s\n", __func__, asmap_path.string().c_str() );
                     if(fs::exists(asmap_path)) {
-                        printf("%s: found asmap file at %s\n", __func__, asmap_path.c_str() );
+                        LogPrint("net", "%s: found asmap file at %s\n", __func__, asmap_path.string().c_str() );
                     } else {
                         // Last Resort: Check the parent directory
                         asmap_path = pwd / ".." / DEFAULT_ASMAP_FILENAME;
-                        printf("%s: looking for asmap file at %s\n", __func__, asmap_path.c_str() );
+                        LogPrint("net", "%s: looking for asmap file at %s\n", __func__, asmap_path.string().c_str() );
                         if(fs::exists(asmap_path)) {
-                            printf("%s: found asmap file at %s\n", __func__, asmap_path.c_str() );
+                            LogPrint("net", "%s: found asmap file at %s\n", __func__, asmap_path.string().c_str() );
                         } else {
                             // Mac SD
                             asmap_path = fs::path("/Applications/SilentDragon.app/Contents/MacOS/") / DEFAULT_ASMAP_FILENAME;
-                            printf("%s: looking for asmap file at %s\n", __func__, asmap_path.c_str() );
+                            LogPrint("net", "%s: looking for asmap file at %s\n", __func__, asmap_path.string().c_str() );
                             if(fs::exists(asmap_path)) {
-                                printf("%s: found asmap file at %s\n", __func__, asmap_path.c_str() );
+                                LogPrint("net", "%s: found asmap file at %s\n", __func__, asmap_path.string().c_str() );
                             } else {
-                                // Shit is fucked up, die an honorable death
-                                InitError(strprintf(_("Could not find any asmap file! Please report this bug to Hush Developers")));
+                                // No asmap file found in any known location; abort startup.
+                                InitError(strprintf(_("Could not find any asmap file! Please report this bug to DragonX Developers")));
                                 return false;
                             }
                         }
@@ -1316,7 +1321,7 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
             if (!asmap_path.is_absolute()) {
                 asmap_path = GetDataDir() / asmap_path;
             }
-            printf("%s: looking for custom asmap file at %s\n", __func__, asmap_path.c_str() );
+            LogPrint("net", "%s: looking for custom asmap file at %s\n", __func__, asmap_path.string().c_str() );
         }
 
         //TODO: verify asmap_path is not a directory
@@ -1330,7 +1335,7 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
             return false;
         }
         const uint256 asmap_version = SerializeHash(asmap);
-        printf("%s: asmap version=%s with %lu mappings\n", __func__, asmap_version.ToString().c_str(), asmap.size());
+        LogPrint("net", "%s: asmap version=%s with %lu mappings\n", __func__, asmap_version.ToString().c_str(), asmap.size());
         LogPrintf("Using asmap version %s for IP bucketing with %lu mappings\n", asmap_version.ToString(), asmap.size());
         addrman.m_asmap = std::move(asmap); // //node.connman->SetAsmap(std::move(asmap));
 
@@ -1349,20 +1354,17 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
         if (SoftSetBoolArg("-rescan", true))
             LogPrintf("%s: parameter interaction: -zapwallettxes=<mode> -> setting -rescan=1\n", __func__);
     }
-	//fprintf(stderr,"%s tik4\n", __FUNCTION__);
 
     // Make sure enough file descriptors are available
     int nBind = std::max((int)mapArgs.count("-bind") + (int)mapArgs.count("-allowbind"), 1);
     nMaxConnections = GetArg("-maxconnections", DEFAULT_MAX_PEER_CONNECTIONS);
-    //fprintf(stderr,"nMaxConnections %d\n",nMaxConnections);
     nMaxConnections = std::max(std::min(nMaxConnections, (int)(FD_SETSIZE - nBind - MIN_CORE_FILEDESCRIPTORS)), 0);
     int nFD = RaiseFileDescriptorLimit(nMaxConnections + MIN_CORE_FILEDESCRIPTORS);
-    fprintf(stderr,"nMaxConnections %d FD_SETSIZE.%d nBind.%d expr.%d \n",nMaxConnections,FD_SETSIZE,nBind,(int)(FD_SETSIZE - nBind - MIN_CORE_FILEDESCRIPTORS));
+    LogPrintf("nMaxConnections %d FD_SETSIZE.%d nBind.%d expr.%d \n",nMaxConnections,FD_SETSIZE,nBind,(int)(FD_SETSIZE - nBind - MIN_CORE_FILEDESCRIPTORS));
     if (nFD < MIN_CORE_FILEDESCRIPTORS)
         return InitError(_("Not enough file descriptors available."));
     if (nFD - MIN_CORE_FILEDESCRIPTORS < nMaxConnections)
         nMaxConnections = nFD - MIN_CORE_FILEDESCRIPTORS;
-    //fprintf(stderr,"nMaxConnections %d\n",nMaxConnections);
     // if using block pruning, then disable txindex
     // also disable the wallet (for now, until SPV support is implemented in wallet)
     if (GetArg("-prune", 0)) {
@@ -1408,10 +1410,9 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
     }
     if (find(categories.begin(), categories.end(), string("randomx")) != categories.end()) {
         fRandomXDebug = true;
-        fprintf(stderr,"%s: enabled randomx debug\n", __func__);
+        LogPrintf("%s: enabled randomx debug\n", __func__);
     }
 
-	//fprintf(stderr,"%s tik5\n", __FUNCTION__);
     // Check for -debugnet
     if (GetBoolArg("-debugnet", false))
         InitWarning(_("Warning: Unsupported argument -debugnet ignored, use -debug=net."));
@@ -1470,7 +1471,6 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
     LogPrintf("Bulk block streaming: %s\n", fBulkBlockSync ? "enabled" : "disabled");
 
     fServer = GetBoolArg("-server", false);
-	//fprintf(stderr,"%s tik6\n", __FUNCTION__);
 
     // block pruning; get the amount of disk space (in MB) to allot for block & undo files
     int64_t nSignedPruneTarget = GetArg("-prune", 0) * 1024 * 1024;
@@ -1558,7 +1558,6 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
     expiryDelta = GetArg("-txexpirydelta", DEFAULT_TX_EXPIRY_DELTA);
     bSpendZeroConfChange = GetBoolArg("-spendzeroconfchange", true);
     fSendFreeTransactions = GetBoolArg("-sendfreetransactions", false);
-	//fprintf(stderr,"%s tik7\n", __FUNCTION__);
 
     std::string strWalletFile = GetArg("-wallet", "wallet.dat");
 #endif // ENABLE_WALLET
@@ -1575,7 +1574,6 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
             nLocalServices |= NODE_BLOOM;
     }
     nMaxTipAge = GetArg("-maxtipage", DEFAULT_MAX_TIP_AGE);
-	//fprintf(stderr,"%s tik8\n", __FUNCTION__);
 
 #ifdef ENABLE_MINING
     if (mapArgs.count("-mineraddress")) {
@@ -1598,7 +1596,6 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
         }
     }
 
-	//fprintf(stderr,"%s tik9\n", __FUNCTION__);
     if (!mapMultiArgs["-nuparams"].empty()) {
         // Allow overriding network upgrade parameters for testing
         if (Params().NetworkIDString() != "regtest") {
@@ -1647,10 +1644,9 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
     std::string sha256_algo = SHA256AutoDetect();
     LogPrintf("Using the '%s' SHA256 implementation\n", sha256_algo);
 
-	//fprintf(stderr,"%s tik10\n", __FUNCTION__);
     // Sanity check
     if (!InitSanityCheck())
-        return InitError(_("Initialization sanity check failed. Please check for insanity. Hush is shutting down!"));
+        return InitError(_("Initialization sanity check failed. Please check for insanity. DragonX is shutting down!"));
 
     std::string strDataDir = GetDataDir().string();
 #ifdef ENABLE_WALLET
@@ -1658,14 +1654,13 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
     if (strWalletFile != boost::filesystem::basename(strWalletFile) + boost::filesystem::extension(strWalletFile))
         return InitError(strprintf(_("Wallet %s resides outside data directory %s"), strWalletFile, strDataDir));
 #endif
-    // Make sure only a single Hush process is using the data directory.
+    // Make sure only a single DragonX process is using the data directory.
     boost::filesystem::path pathLockFile = GetDataDir() / ".lock";
     FILE* file = fopen(pathLockFile.string().c_str(), "a"); // empty lock file; created if it doesn't exist.
     if (file) fclose(file);
 
 
-	//fprintf(stderr,"%s tik11\n", __FUNCTION__);
-    fprintf(stderr,"Attempting to obtain lock %s\n", pathLockFile.string().c_str());
+    LogPrintf("Attempting to obtain lock %s\n", pathLockFile.string().c_str());
     try {
         static boost::interprocess::file_lock lock(pathLockFile.string().c_str());
         if (!lock.try_lock())
@@ -1680,10 +1675,9 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
     if (GetBoolArg("-shrinkdebugfile", !fDebug))
         ShrinkDebugFile();
 
-	//fprintf(stderr,"%s tik12\n", __FUNCTION__);
 
     LogPrintf("\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n");
-    LogPrintf("Hush version %s\n", FormatFullVersion());
+    LogPrintf("DragonX version %s\n", FormatFullVersion());
 
     if (fPrintToDebugLog)
         OpenDebugLog();
@@ -1713,7 +1707,6 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
             threadGroup.create_thread(&ThreadRandomXVerify);
     }
 
-	//fprintf(stderr,"%s tik13\n", __FUNCTION__);
 
     // Start the lightweight task scheduler thread
     CScheduler::Function serviceLoop = boost::bind(&CScheduler::serviceQueue, &scheduler);
@@ -1721,7 +1714,6 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
 
     // Count uptime
     MarkStartTime();
-	//fprintf(stderr,"%s tik14\n", __FUNCTION__);
 
     if ((chainparams.NetworkIDString() != "regtest") &&
             GetBoolArg("-showmetrics", 0) &&
@@ -1731,7 +1723,6 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
         threadGroup.create_thread(&ThreadShowMetricsScreen);
     }
 
-	//fprintf(stderr,"%s tik15\n", __FUNCTION__);
 
     if ( HUSH_NSPV_FULLNODE )
     {
@@ -1749,7 +1740,6 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
         if (!AppInitServers(threadGroup))
             return InitError(_("Unable to start HTTP server. See debug log for details."));
     }
-	//fprintf(stderr,"%s tik16\n", __FUNCTION__);
 
     int64_t nStart;
 
@@ -1776,7 +1766,6 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
 #endif // ENABLE_WALLET
     // ********************************************************* Step 6: network initialization
 
-	//fprintf(stderr,"%s tik17\n", __FUNCTION__);
     RegisterNodeSignals(GetNodeSignals());
 
     // sanitize comments per BIP-0014, format user agent and check total size
@@ -1792,7 +1781,6 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
         return InitError(strprintf("Total length of network version string %i exceeds maximum of %i characters. Reduce the number and/or size of uacomments.",
             strSubVersion.size(), MAX_SUBVERSION_LENGTH));
     }
-	//fprintf(stderr,"%s tik18\n", __FUNCTION__);
 
     // Disable clearnet peers if -clearnet=0 for this node or -ac_clearnet=0 for this chain
     if (ASSETCHAINS_CLEARNET == 0 || !GetBoolArg("-clearnet", DEFAULT_CLEARNET)) {
@@ -1851,7 +1839,6 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
         SetReachable(NET_IPV4, false);
     }
 
-	//fprintf(stderr,"%s tik19\n", __FUNCTION__);
     if (mapArgs.count("-allowlist")) {
         BOOST_FOREACH(const std::string& net, mapMultiArgs["-allowlist"]) {
             CSubNet subnet;
@@ -1914,7 +1901,6 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
     fDiscover = GetBoolArg("-discover", true);
     fNameLookup = GetBoolArg("-dns", true);
 
-	//fprintf(stderr,"%s tik22\n", __FUNCTION__);
     bool fBound = false;
     if (fListen) {
         if (mapArgs.count("-bind") || mapArgs.count("-allowbind")) {
@@ -1953,7 +1939,6 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
         }
     }
 
-	//fprintf(stderr,"%s tik23\n", __FUNCTION__);
 
     BOOST_FOREACH(const std::string& strDest, mapMultiArgs["-seednode"])
         AddOneShot(strDest);
@@ -1989,7 +1974,6 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
         return !fRequestShutdown;
     }
     // ********************************************************* Step 7: load block chain
-	//fprintf(stderr,"%s tik24\n", __FUNCTION__);
 
     fReindex = GetBoolArg("-reindex", false);
 
@@ -2054,7 +2038,7 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
         if ( checkval != fAddressIndex && fAddressIndex != 0 )
         {
             pblocktree->WriteFlag("addressindex", fAddressIndex);
-            fprintf(stderr,"set addressindex, will reindex. could take a while.\n");
+            LogPrintf("set addressindex, will reindex. could take a while.\n");
             fReindex = true;
         }
         fSpentIndex = GetBoolArg("-spentindex", DEFAULT_SPENTINDEX);
@@ -2062,7 +2046,7 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
         if ( checkval != fSpentIndex && fSpentIndex != 0 )
         {
             pblocktree->WriteFlag("spentindex", fSpentIndex);
-            fprintf(stderr,"set spentindex, will reindex. could take a while.\n");
+            LogPrintf("set spentindex, will reindex. could take a while.\n");
             fReindex = true;
         }
     }
@@ -2091,7 +2075,7 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
                 pcoinscatcher  = new CCoinsViewErrorCatcher(pcoinsdbview);
                 pcoinsTip      = new CCoinsViewCache(pcoinscatcher);
                 try {
-                    pnotarizations = new NotarizationDB(100*1024*1024, false, fReindex);
+                    pnotarizations = new NotarizationDB(NOTARIZATION_DB_CACHE_BYTES, false, fReindex);
                 } catch (const std::exception& e) {
                     // The notarizations (dPoW) DB is non-essential and node-regenerable. It has been seen to
                     // snapshot/flush torn (0-byte log -> leveldb "Database I/O error" on reopen), which
@@ -2107,7 +2091,7 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
                         boost::filesystem::remove_all(ndir.string() + ".corrupt");
                         boost::filesystem::rename(ndir, ndir.string() + ".corrupt");
                     }
-                    pnotarizations = new NotarizationDB(100*1024*1024, false, true);
+                    pnotarizations = new NotarizationDB(NOTARIZATION_DB_CACHE_BYTES, false, true);
                 }
 
 
@@ -2115,14 +2099,14 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
                     boost::filesystem::remove(GetDataDir() / "hushstate");
                     boost::filesystem::remove(GetDataDir() / "hushsignedmasks");
                     pblocktree->WriteReindexing(true);
-					fprintf(stderr, "%s: Deleted hushstate and hushsignedmasks...\n", __FUNCTION__);
+					LogPrintf("%s: Deleted hushstate and hushsignedmasks...\n", __FUNCTION__);
 
                     //If we're reindexing in prune mode, wipe away unusable block files and all undo data files
                     if (fPruneMode)
                         CleanupBlockRevFiles();
                 }
 
-				fprintf(stderr, "%s: Loading block index...\n", __FUNCTION__);
+				LogPrintf("%s: Loading block index...\n", __FUNCTION__);
                 if (!LoadBlockIndex()) {
                     strLoadError = _("Error loading block database");
                     break;
@@ -2146,7 +2130,7 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
                     break;
                 }
 
-                fprintf(stderr, "zindex=%s in block index\n", fZindex ? "enabled" : "disabled");
+                LogPrintf("zindex=%s in block index\n", fZindex ? "enabled" : "disabled");
                 if (fZindex != GetBoolArg("-zindex", false)) {
                     strLoadError = _("You need to rebuild the database using -reindex to change -zindex");
                     break;
@@ -2201,7 +2185,7 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
         if (!fLoaded) {
             // first suggest a reindex
             if (!fReset) {
-			    fprintf(stderr,"%s: error in hd data\n", __FUNCTION__);
+			    LogPrintf("%s: error in hd data\n", __FUNCTION__);
                 bool fRet = uiInterface.ThreadSafeMessageBox(
                     strLoadError + ".\n\n" + _("error in HDD data, might just need to update to latest, if that doesnt work, then you need to resync"),
                     "", CClientUIInterface::MSG_ERROR | CClientUIInterface::BTN_ABORT);
@@ -2236,7 +2220,6 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
         mempool.ReadFeeEstimates(est_filein);
     fFeeEstimatesInitialized = true;
 
-	//fprintf(stderr,"%s tik25\n", __FUNCTION__);
 
     // ********************************************************* Step 8: load wallet
 #ifdef ENABLE_WALLET
@@ -2282,10 +2265,10 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
                 InitWarning(msg);
             }
             else if (nLoadWalletRet == DB_TOO_NEW)
-                strErrors << _("Error loading wallet.dat: Wallet requires newer version of Hush") << "\n";
+                strErrors << _("Error loading wallet.dat: Wallet requires newer version of DragonX") << "\n";
             else if (nLoadWalletRet == DB_NEED_REWRITE)
             {
-                strErrors << _("Wallet needed to be rewritten: restart Hush to complete") << "\n";
+                strErrors << _("Wallet needed to be rewritten: restart DragonX to complete") << "\n";
                 LogPrintf("%s", strErrors.str());
                 return InitError(strErrors.str());
             }
@@ -2408,7 +2391,7 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
 
             int consolidationInterval = GetArg("-consolidationinterval", 25);
             if (consolidationInterval < 5) {
-                fprintf(stderr,"%s: Invalid consolidation interval of %d < 5, setting to default of 25\n", __func__, consolidationInterval);
+                LogPrintf("%s: Invalid consolidation interval of %d < 5, setting to default of 25\n", __func__, consolidationInterval);
                 consolidationInterval = 25;
             }
 
@@ -2433,7 +2416,7 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
         if (pwalletMain->fSweepEnabled) {
             int sweepInterval = GetArg("-zsweepinterval", 10);
             if (sweepInterval < 5) {
-                fprintf(stderr,"%s: Invalid sweep interval of %d, setting to default of 10\n", __func__, sweepInterval);
+                LogPrintf("%s: Invalid sweep interval of %d, setting to default of 10\n", __func__, sweepInterval);
                 sweepInterval = 10;
             }
             pwalletMain->sweepInterval = sweepInterval;
@@ -2450,7 +2433,6 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
             }
 
             for (int i = 0; i < vSweep.size(); i++) {
-                // LogPrintf("Sweep Address: %s\n", vSweep[i]);
                 auto zSweep = DecodePaymentAddress(vSweep[i]);
                 if (!IsValidPaymentAddress(zSweep)) {
                     return InitError("Invalid zsweep address");
@@ -2519,10 +2501,11 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
                       "pass -autoshield=1 to enable.\n", __func__, pwalletMain->hdSeedOrigin);
         }
         if (pwalletMain->fAutoShieldEnabled) {
-            int autoShieldInterval = GetArg("-autoshieldinterval", 25);
-            if (autoShieldInterval < 5) {
-                fprintf(stderr,"%s: Invalid autoshield interval of %d < 5, setting to default of 25\n", __func__, autoShieldInterval);
-                autoShieldInterval = 25;
+            int autoShieldInterval = GetArg("-autoshieldinterval", DEFAULT_AUTOSHIELD_INTERVAL);
+            if (autoShieldInterval < MIN_AUTOSHIELD_INTERVAL) {
+                InitWarning(strprintf(_("autoshield interval %d below the minimum, clamping to %d"),
+                        autoShieldInterval, MIN_AUTOSHIELD_INTERVAL));
+                autoShieldInterval = MIN_AUTOSHIELD_INTERVAL;
             }
             pwalletMain->autoShieldInterval = autoShieldInterval;
             pwalletMain->nextAutoShield     = pwalletMain->autoShieldInterval + chainActive.Height();
@@ -2531,16 +2514,14 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
             // guard against a fat-finger (e.g. -autoshieldfee=5000000000) that
             // would otherwise build an over-fee or malformed shield tx that
             // fails mempool admission every round.
-            CAmount autoShieldFee = GetArg("-autoshieldfee", 10000);
-            const CAmount AUTOSHIELD_MIN_FEE = 1000;      // comfortably above minRelayTxFee for a small tx
-            const CAmount AUTOSHIELD_MAX_FEE = 10000000;  // 0.1 DRGX; no sane autoshield fee exceeds this
+            CAmount autoShieldFee = GetArg("-autoshieldfee", DEFAULT_AUTOSHIELD_FEE);
             if (autoShieldFee < AUTOSHIELD_MIN_FEE || autoShieldFee > AUTOSHIELD_MAX_FEE) {
-                fprintf(stderr,"%s: -autoshieldfee=%lld out of range [%lld,%lld], using default 10000\n",
-                        __func__, (long long)autoShieldFee, (long long)AUTOSHIELD_MIN_FEE, (long long)AUTOSHIELD_MAX_FEE);
-                autoShieldFee = 10000;
+                InitWarning(strprintf(_("-autoshieldfee=%lld out of range [%lld,%lld], using default %lld"),
+                        (long long)autoShieldFee, (long long)AUTOSHIELD_MIN_FEE, (long long)AUTOSHIELD_MAX_FEE, (long long)DEFAULT_AUTOSHIELD_FEE));
+                autoShieldFee = DEFAULT_AUTOSHIELD_FEE;
             }
             pwalletMain->autoShieldFee      = autoShieldFee;
-            pwalletMain->autoShieldMinUtxos = GetArg("-autoshieldminutxos", 1);
+            pwalletMain->autoShieldMinUtxos = GetArg("-autoshieldminutxos", DEFAULT_AUTOSHIELD_MIN_UTXOS);
             if (pwalletMain->autoShieldMinUtxos < 1) {
                 pwalletMain->autoShieldMinUtxos = 1;
             }
@@ -2692,10 +2673,10 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
 #ifdef ENABLE_MINING
  #ifndef ENABLE_WALLET
     if (GetBoolArg("-minetolocalwallet", false)) {
-        return InitError(_("Hush was not built with wallet support. Set -minetolocalwallet=0 to use -mineraddress, or rebuild Hush with wallet support."));
+        return InitError(_("DragonX was not built with wallet support. Set -minetolocalwallet=0 to use -mineraddress, or rebuild DragonX with wallet support."));
     }
     if (GetArg("-mineraddress", "").empty() && GetBoolArg("-gen", false)) {
-        return InitError(_("Hush was not built with wallet support. Set -mineraddress, or rebuild Hush with wallet support."));
+        return InitError(_("DragonX was not built with wallet support. Set -mineraddress, or rebuild DragonX with wallet support."));
     }
  #endif // !ENABLE_WALLET
 
@@ -2754,7 +2735,7 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
         // Advertise willingness to SERVE bulk block streams (full nodes only) when opted in.
         if ( fBulkBlockSync )
             nLocalServices |= NODE_BULKBLOCKS;
-        fprintf(stderr,"nLocalServices %llx %d, %d\n",(long long)nLocalServices,GetBoolArg("-addressindex", DEFAULT_ADDRESSINDEX),GetBoolArg("-spentindex", DEFAULT_SPENTINDEX));
+        LogPrintf("nLocalServices %llx %d, %d\n",(long long)nLocalServices,GetBoolArg("-addressindex", DEFAULT_ADDRESSINDEX),GetBoolArg("-spentindex", DEFAULT_SPENTINDEX));
     }
     // ********************************************************* Step 10: import blocks
 
@@ -2770,7 +2751,7 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
         if ( !ActivateBestChain(true,state))
             strErrors << "Failed to connect best block";
     } else {
-        fprintf(stderr,"HUSH_REWIND < 0\n");
+        LogPrintf("HUSH_REWIND < 0\n");
     }
     std::vector<boost::filesystem::path> vImportFiles;
     if (mapArgs.count("-loadblock"))
@@ -2799,7 +2780,6 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
 
     // ********************************************************* Step 11: start node
 
-    //fprintf(stderr,"Checking disk space...\n");
     if (!CheckDiskSpace())
         return false;
 
@@ -2837,7 +2817,7 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
 
     SetRPCWarmupFinished();
     if(fDebug)
-        fprintf(stderr,"RPC warmump finished\n");
+        fprintf(stderr,"RPC warmup finished\n");
     uiInterface.InitMessage(_("Full Node Done Loading! :)"));
 
 #ifdef ENABLE_WALLET

src/main.cpp

@@ -1259,11 +1259,10 @@ unsigned int GetP2SHSigOpCount(const CTransaction& tx, const CCoinsViewCache& in
 // Ensure that a coinbase transaction is structured according to the consensus rules of the chain
 bool ContextualCheckCoinbaseTransaction(int32_t slowflag,const CBlock *block,CBlockIndex * const previndex,const CTransaction& tx, const int nHeight,int32_t validateprices)
 {
-    if ( slowflag != 0 && ASSETCHAINS_CBOPRET != 0 && validateprices != 0 && nHeight > 0 && tx.vout.size() > 0 )
-    {
-        if ( hush_opretvalidate(block,previndex,nHeight,tx.vout[tx.vout.size()-1].scriptPubKey) < 0 )
-            return(false);
-    }
+    // The only coinbase-specific contextual check here was CBOPRET price-oracle
+    // validation (hush_opretvalidate), gated on ASSETCHAINS_CBOPRET, which is always
+    // 0 on DragonX (no -ac_cbopret). With that dead path removed there is nothing left
+    // to validate, so a DragonX coinbase is unconditionally valid at this stage.
     return(true);
 }
 

src/miner.cpp

@@ -160,7 +160,6 @@ bool hush_appendACscriptpub();
 
 CBlockTemplate* CreateNewBlock(CPubKey _pk,const CScript& _scriptPubKeyIn, int32_t gpucount, bool isStake)
 {
-    //fprintf(stderr,"%s\n", __func__);
     CScript scriptPubKeyIn(_scriptPubKeyIn);
 
     CPubKey pk;
@@ -179,15 +178,13 @@ CBlockTemplate* CreateNewBlock(CPubKey _pk,const CScript& _scriptPubKeyIn, int32
     uint32_t blocktime; const CChainParams& chainparams = Params();
     bool fNotarizationBlock = false; std::vector<int8_t> NotarizationNotaries;
     
-    //fprintf(stderr,"%s: create new block with pubkey=%s\n", __func__, HexStr(pk).c_str());
     // Create new block
     if ( gpucount < 0 )
         gpucount = HUSH_MAXGPUCOUNT;
     std::unique_ptr<CBlockTemplate> pblocktemplate(new CBlockTemplate());
-    //fprintf(stderr,"%s: created new block template\n", __func__);
     if(!pblocktemplate.get())
     {
-        fprintf(stderr,"%s: pblocktemplate.get() failure\n", __func__);
+        LogPrintf("%s: pblocktemplate.get() failure\n", __func__);
         return NULL;
     }
     CBlock *pblock = &pblocktemplate->block; // pointer for convenience
@@ -200,7 +197,6 @@ CBlockTemplate* CreateNewBlock(CPubKey _pk,const CScript& _scriptPubKeyIn, int32
     pblock->vtx.push_back(CTransaction());
     pblocktemplate->vTxFees.push_back(-1); // updated at end
     pblocktemplate->vTxSigOps.push_back(-1); // updated at end
-    //fprintf(stderr,"%s: added dummy coinbase\n", __func__);
 
     // Largest block you're willing to create:
     unsigned int nBlockMaxSize = GetArg("-blockmaxsize", MAX_BLOCK_SIZE(1)); // MAX_BLOCK_SIZE(chainActive.LastTip()->GetHeight()+1));
@@ -217,7 +213,6 @@ CBlockTemplate* CreateNewBlock(CPubKey _pk,const CScript& _scriptPubKeyIn, int32
     // until there are no more or the block reaches this size:
     const unsigned int nBlockMinSize = std::min(nBlockMaxSize,  (unsigned int) GetArg("-blockminsize", DEFAULT_BLOCK_MIN_SIZE));
     // nBlockMinSize = std::min(nBlockMaxSize, nBlockMinSize);
-    //fprintf(stderr,"%s: nBlockMaxSize=%u, nBlockPrioritySize=%u, nBlockMinSize=%u\n", __func__, nBlockMaxSize, nBlockPrioritySize, nBlockMinSize);
 
 
     // Collect memory pool transactions into the block
@@ -243,17 +238,18 @@ CBlockTemplate* CreateNewBlock(CPubKey _pk,const CScript& _scriptPubKeyIn, int32
         const int64_t nMedianTimePast = pindexPrev->GetMedianTimePast();
         uint32_t proposedTime = GetTime();
 
-        //fprintf(stderr,"%s: nHeight=%d, consensusBranchId=%u, proposedTime=%u\n", __func__, nHeight, consensusBranchId,  proposedTime);
 
         if (proposedTime == nMedianTimePast)
         {
             // too fast or stuck, this addresses the too fast issue, while moving
             // forward as quickly as possible
-            for (int i; i < 100; i++)
+            for (int i = 0; i < 100; i++)
             {
                 proposedTime = GetTime();
                 if (proposedTime == nMedianTimePast)
                     MilliSleep(10);
+                else
+                    break; // time advanced past the median; stop waiting
             }
         }
         pblock->nTime = GetTime();
@@ -280,7 +276,6 @@ CBlockTemplate* CreateNewBlock(CPubKey _pk,const CScript& _scriptPubKeyIn, int32
         vector<TxPriority> vecPriority;
         vecPriority.reserve(mempool.mapTx.size() + 1);
 
-        //fprintf(stderr,"%s: going to add txs from mempool\n", __func__);
         // now add transactions from the mempool
         int32_t Notarizations = 0; uint64_t txvalue;
         uint32_t large_zins  = 0;                  // number of ztxs with large number of inputs in block
@@ -299,7 +294,7 @@ CBlockTemplate* CreateNewBlock(CPubKey _pk,const CScript& _scriptPubKeyIn, int32
 
             if (tx.IsCoinBase() || !IsFinalTx(tx, nHeight, nLockTimeCutoff) || IsExpiredTx(tx, nHeight))
             {
-                fprintf(stderr,"%s: coinbase.%d finaltx.%d expired.%d\n",__func__, tx.IsCoinBase(),IsFinalTx(tx, nHeight, nLockTimeCutoff),IsExpiredTx(tx, nHeight));
+                LogPrint("mempool", "%s: coinbase.%d finaltx.%d expired.%d\n",__func__, tx.IsCoinBase(),IsFinalTx(tx, nHeight, nLockTimeCutoff),IsExpiredTx(tx, nHeight));
                 continue;
             }
             txvalue = tx.GetValueOut();
@@ -380,7 +375,6 @@ CBlockTemplate* CreateNewBlock(CPubKey _pk,const CScript& _scriptPubKeyIn, int32
                     std::set<int> checkdupes( TMP_NotarizationNotaries.begin(), TMP_NotarizationNotaries.end() );
                     if ( checkdupes.size() != TMP_NotarizationNotaries.size() )
                     {
-                        fprintf(stderr, "%s: WTFBBQ! possible notarization is signed multiple times by same notary, passed as normal transaction.\n", __func__);
                     } else fNotarization = true;
                 }
                 nTotalIn += tx.GetShieldedValueIn();
@@ -390,7 +384,6 @@ CBlockTemplate* CreateNewBlock(CPubKey _pk,const CScript& _scriptPubKeyIn, int32
 
             // Priority is sum(valuein * age) / modified_txsize
             unsigned int nTxSize = ::GetSerializeSize(tx, SER_NETWORK, PROTOCOL_VERSION);
-            // fprintf(stderr,"%s: computing priority with nTxSize=%u\n", __func__, nTxSize);
             dPriority = tx.ComputePriority(dPriority, nTxSize);
 
             uint256 hash = tx.GetHash();
@@ -410,7 +403,7 @@ CBlockTemplate* CreateNewBlock(CPubKey _pk,const CScript& _scriptPubKeyIn, int32
                         Notarizations++;
                         if ( Notarizations > 1 ) 
                         {
-                            fprintf(stderr, "%s: skipping notarization.%d\n",__func__, Notarizations);
+                            LogPrint("mempool", "%s: skipping notarization.%d\n",__func__, Notarizations);
                             // Any attempted notarization needs to be in its own block!
                             continue;
                         }
@@ -421,7 +414,6 @@ CBlockTemplate* CreateNewBlock(CPubKey _pk,const CScript& _scriptPubKeyIn, int32
                             NotarizationNotaries = TMP_NotarizationNotaries;
                             dPriority = 1e16;
                             fNotarizationBlock = true;
-                            //fprintf(stderr, "Notarization %s set to maximum priority\n",hash.ToString().c_str());
                         }
                     }
                 }
@@ -436,7 +428,6 @@ CBlockTemplate* CreateNewBlock(CPubKey _pk,const CScript& _scriptPubKeyIn, int32
                 vecPriority.push_back(TxPriority(dPriority, feeRate, &(mi->GetTx())));
             }
         }
-        // fprintf(stderr,"%s: done adding txs from mempool\n", __func__);
 
         // Collect transactions into block
         int64_t interest;
@@ -448,7 +439,6 @@ CBlockTemplate* CreateNewBlock(CPubKey _pk,const CScript& _scriptPubKeyIn, int32
         TxPriorityCompare comparer(fSortedByFee);
         std::make_heap(vecPriority.begin(), vecPriority.end(), comparer);
 
-        // fprintf(stderr,"%s: compared txs with fSortedByFee=%d\n", __func__, fSortedByFee);
 
         while (!vecPriority.empty()) {
             // Take highest priority transaction off the priority queue:
@@ -456,10 +446,8 @@ CBlockTemplate* CreateNewBlock(CPubKey _pk,const CScript& _scriptPubKeyIn, int32
             CFeeRate feeRate = vecPriority.front().get<1>();
             const CTransaction& tx = *(vecPriority.front().get<2>());
 
-            // fprintf(stderr,"%s: grabbed first tx from priority queue\n", __func__);
 
             std::pop_heap(vecPriority.begin(), vecPriority.end(), comparer);
-            // fprintf(stderr,"%s: compared first tx from priority queue\n", __func__);
             vecPriority.pop_back();
 
             if(tx.vShieldedSpend.size() >= LARGE_ZINS_THRESHOLD && large_zins >= LARGE_ZINS_MAX) {
@@ -476,12 +464,11 @@ CBlockTemplate* CreateNewBlock(CPubKey _pk,const CScript& _scriptPubKeyIn, int32
 
             // Size limits
             unsigned int nTxSize = ::GetSerializeSize(tx, SER_NETWORK, PROTOCOL_VERSION);
-            // fprintf(stderr,"%s: nTxSize = %u\n", __func__, nTxSize);
 
 
             if (nBlockSize + nTxSize >= nBlockMaxSize-512) // room for extra autotx
             {
-                fprintf(stderr,"%s: nBlockSize %d + %d nTxSize >= %d nBlockMaxSize\n",__func__, (int32_t)nBlockSize,(int32_t)nTxSize,(int32_t)nBlockMaxSize);
+                LogPrint("mempool", "%s: nBlockSize %d + %d nTxSize >= %d nBlockMaxSize\n",__func__, (int32_t)nBlockSize,(int32_t)nTxSize,(int32_t)nBlockMaxSize);
                 continue;
             }
 
@@ -489,11 +476,9 @@ CBlockTemplate* CreateNewBlock(CPubKey _pk,const CScript& _scriptPubKeyIn, int32
             unsigned int nTxSigOps = GetLegacySigOpCount(tx);
             if (nBlockSigOps + nTxSigOps >= MAX_BLOCK_SIGOPS-1)
             {
-                //fprintf(stderr,"A nBlockSigOps %d + %d nTxSigOps >= %d MAX_BLOCK_SIGOPS-1\n",(int32_t)nBlockSigOps,(int32_t)nTxSigOps,(int32_t)MAX_BLOCK_SIGOPS);
                 continue;
             }
 
-            // fprintf(stderr,"%s: looking to see if we need to skip any fee=0 txs\n", __func__);
 
             // Skip free transactions if we're past the minimum block size:
             const uint256& hash = tx.GetHash();
@@ -502,7 +487,7 @@ CBlockTemplate* CreateNewBlock(CPubKey _pk,const CScript& _scriptPubKeyIn, int32
             mempool.ApplyDeltas(hash, dPriorityDelta, nFeeDelta);
             if (fSortedByFee && (dPriorityDelta <= 0) && (nFeeDelta <= 0) && (feeRate < ::minRelayTxFee) && (nBlockSize + nTxSize >= nBlockMinSize))
             {
-                fprintf(stderr,"%s: fee rate skip\n", __func__);
+                LogPrint("mempool", "%s: fee rate skip\n", __func__);
                 continue;
             }
             // Prioritize by fee once past the priority size or we run out of high-priority transactions
@@ -516,7 +501,6 @@ CBlockTemplate* CreateNewBlock(CPubKey _pk,const CScript& _scriptPubKeyIn, int32
 
             if (!view.HaveInputs(tx))
             {
-                //fprintf(stderr,"dont have inputs\n");
                 continue;
             }
             CAmount nTxFees = view.GetValueIn(chainActive.LastTip()->GetHeight(),&interest,tx,chainActive.LastTip()->nTime)-tx.GetValueOut();
@@ -541,7 +525,6 @@ CBlockTemplate* CreateNewBlock(CPubKey _pk,const CScript& _scriptPubKeyIn, int32
                         opcodetype op;
                         std::vector<uint8_t> opretData;
                         if (txout.scriptPubKey.GetOp(it, op, opretData)) {
-                            //std::cerr << HexStr(opretData.begin(), opretData.end()) << std::endl;
                             nTxOpretSize += opretData.size();
                         }
                     }
@@ -552,13 +535,11 @@ CBlockTemplate* CreateNewBlock(CPubKey _pk,const CScript& _scriptPubKeyIn, int32
                     std::cerr << __func__ << ": " << tx.GetHash().ToString() << " nTxSize=" << nTxSize << " nTxOpretSize=" << nTxOpretSize << " feeRate=" << feeRate.ToString() << " opretMinFee=" << opretMinFee << " nTxFees=" << nTxFees <<" fSpamTx=" << fSpamTx << std::endl;
                     continue;
                 }
-                // std::cerr << tx.GetHash().ToString() << " vecPriority.size() = " << vecPriority.size() << std::endl;
             }
 
             nTxSigOps += GetP2SHSigOpCount(tx, view);
             if (nBlockSigOps + nTxSigOps >= MAX_BLOCK_SIGOPS-1)
             {
-                //fprintf(stderr,"B nBlockSigOps %d + %d nTxSigOps >= %d MAX_BLOCK_SIGOPS-1\n",(int32_t)nBlockSigOps,(int32_t)nTxSigOps,(int32_t)MAX_BLOCK_SIGOPS);
                 continue;
             }
             // Note that flags: we don't want to set mempool/IsStandard()
@@ -568,7 +549,7 @@ CBlockTemplate* CreateNewBlock(CPubKey _pk,const CScript& _scriptPubKeyIn, int32
             PrecomputedTransactionData txdata(tx);
             if (!ContextualCheckInputs(tx, state, view, true, MANDATORY_SCRIPT_VERIFY_FLAGS, true, txdata, Params().GetConsensus(), consensusBranchId))
             {
-                fprintf(stderr,"%s: ContextualCheckInputs failure\n",__func__);
+                LogPrint("mempool", "%s: ContextualCheckInputs failure\n",__func__);
                 continue;
             }
             UpdateCoins(tx, view, nHeight);
@@ -623,13 +604,11 @@ CBlockTemplate* CreateNewBlock(CPubKey _pk,const CScript& _scriptPubKeyIn, int32
 
         nLastBlockTx = nBlockTx;
         nLastBlockSize = nBlockSize;
-        // fprintf(stderr,"%s: nLastBlockTx=%lu , nLastBlockSize=%lu\n", __func__, nLastBlockTx, nLastBlockSize);
 
         if ( ASSETCHAINS_ADAPTIVEPOW <= 0 )
             blocktime = 1 + std::max(pindexPrev->GetMedianTimePast()+1, GetTime());
         else blocktime = 1 + std::max((int64_t)(pindexPrev->nTime+1), GetTime());
         //pblock->nTime = blocktime + 1;
-        // fprintf(stderr,"%s: calling GetNextWorkRequired\n", __func__);
         pblock->nBits = GetNextWorkRequired(pindexPrev, pblock, Params().GetConsensus());
 
         LogPrintf("CreateNewBlock(): total size %u blocktime.%u nBits.%08x\n", nBlockSize,blocktime,pblock->nBits);
@@ -643,7 +622,6 @@ CBlockTemplate* CreateNewBlock(CPubKey _pk,const CScript& _scriptPubKeyIn, int32
         txNew.vout.resize(1);
         txNew.vout[0].scriptPubKey = scriptPubKeyIn;
         txNew.vout[0].nValue = GetBlockSubsidy(nHeight,consensusParams) + nFees;
-        // fprintf(stderr,"%s: mine ht.%d with %.8f\n",__func__,nHeight,(double)txNew.vout[0].nValue/COIN);
         txNew.nExpiryHeight = 0;
         if ( ASSETCHAINS_ADAPTIVEPOW <= 0 )
             txNew.nLockTime = std::max(pindexPrev->GetMedianTimePast()+1, GetTime());
@@ -665,10 +643,9 @@ CBlockTemplate* CreateNewBlock(CPubKey _pk,const CScript& _scriptPubKeyIn, int32
                 static bool didinit = false;
                 if ( !didinit && nHeight > HUSH_EARLYTXID_HEIGHT && HUSH_EARLYTXID != zeroid && hush_appendACscriptpub() )
                 {
-                    fprintf(stderr, "appended ccopreturn to assetchains_scriptpub.%s\n", assetchains_scriptpub.c_str());
+                    LogPrintf("appended ccopreturn to assetchains_scriptpub.%s\n", assetchains_scriptpub.c_str());
                     didinit = true;
                 }
-                //fprintf(stderr,"mine to -ac_script\n");
                 //txNew.vout[1].scriptPubKey = CScript() << ParseHex();
                 int32_t len = strlen(assetchains_scriptpub.c_str());
                 len >>= 1;
@@ -682,14 +659,11 @@ CBlockTemplate* CreateNewBlock(CPubKey _pk,const CScript& _scriptPubKeyIn, int32
                 for (i=0; i<33; i++)
                 {
                     ptr[i+1] = ASSETCHAINS_OVERRIDE_PUBKEY33[i];
-                    //fprintf(stderr,"%02x",ptr[i+1]);
                 }
                 ptr[34] = OP_CHECKSIG;
-                //fprintf(stderr," set ASSETCHAINS_OVERRIDE_PUBKEY33 into vout[1]\n");
             }
-            //printf("autocreate commision vout\n");
         } else if ( (uint64_t)(txNew.vout[0].nValue) >= ASSETCHAINS_TIMELOCKGTE) {
-			fprintf(stderr,"timelocked chains not supported in this code!\n");
+			LogPrintf("timelocked chains not supported in this code!\n");
 			LEAVE_CRITICAL_SECTION(cs_main);
 			LEAVE_CRITICAL_SECTION(mempool.cs);
 			return(0);
@@ -702,16 +676,15 @@ CBlockTemplate* CreateNewBlock(CPubKey _pk,const CScript& _scriptPubKeyIn, int32
                 uint64_t totalsats = hush_notarypay(txNew, NotarizationNotaries, pblock->nTime, nHeight, script, scriptlen);
                 if ( totalsats == 0 )
                 {
-                    fprintf(stderr, "Could not create notary payment, trying again.\n");
-                    if ( !isStake )
-                    {
+                    LogPrintf("Could not create notary payment, trying again.\n");
+                    // Release unconditionally to match the unconditional ENTER above. The old
+                    // `if(!isStake)` guard leaked cs_main/mempool.cs on the isStake path (this
+                    // still return(0)s), while the success and timelock paths always release.
                     LEAVE_CRITICAL_SECTION(cs_main);
                     LEAVE_CRITICAL_SECTION(mempool.cs);
-                    }
                     return(0);
                 }
-                //fprintf(stderr, "Created notary payment coinbase totalsat.%lu\n",totalsats);    
-            } else fprintf(stderr, "vout 2 of notarization is not OP_RETURN scriptlen.%i\n", scriptlen);
+            } else LogPrintf("vout 2 of notarization is not OP_RETURN scriptlen.%i\n", scriptlen);
         }
         if ( ASSETCHAINS_CBOPRET != 0 )
         {
@@ -719,7 +692,6 @@ CBlockTemplate* CreateNewBlock(CPubKey _pk,const CScript& _scriptPubKeyIn, int32
             txNew.vout.resize(numv+1);
             txNew.vout[numv].nValue = 0;
             txNew.vout[numv].scriptPubKey = hush_mineropret(nHeight);
-            //printf("autocreate commision/cbopret.%lld vout[%d]\n",(long long)ASSETCHAINS_CBOPRET,(int32_t)txNew.vout.size());
         }
         pblock->vtx[0] = txNew;
         pblocktemplate->vTxFees[0] = -nFees;
@@ -752,26 +724,23 @@ CBlockTemplate* CreateNewBlock(CPubKey _pk,const CScript& _scriptPubKeyIn, int32
         if ( ASSETCHAINS_CC == 0 && pindexPrev != 0 && (IS_HUSH_NOTARY == 0 || My_notaryid < 0) )
         {
             CValidationState state;
-            //fprintf(stderr,"%s: check validity\n", __func__);
             if ( !TestBlockValidity(state, *pblock, pindexPrev, false, false)) // invokes CC checks
             {
-                if ( !isStake )
-                {
+                // Release unconditionally to match the unconditional ENTER above. The old
+                // `if(!isStake)` guard leaked cs_main/mempool.cs on the isStake path (this
+                // still return(0)s), while the success and timelock paths always release.
                 LEAVE_CRITICAL_SECTION(cs_main);
                 LEAVE_CRITICAL_SECTION(mempool.cs);
-                }
-                fprintf(stderr,"%s: TestBlockValidity failed!\n", __func__);
+                LogPrintf("%s: TestBlockValidity failed!\n", __func__);
                 //throw std::runtime_error("CreateNewBlock(): TestBlockValidity failed"); // crashes the node, moved to GetBlockTemplate and issue return.
                 return(0);
             }
-            //fprintf(stderr,"valid\n");
         }
     }
 
     LEAVE_CRITICAL_SECTION(cs_main);
     LEAVE_CRITICAL_SECTION(mempool.cs);
 
-    // fprintf(stderr,"%s: done\n", __func__);
     return pblocktemplate.release();
 }
 
@@ -781,7 +750,6 @@ CBlockTemplate* CreateNewBlock(CPubKey _pk,const CScript& _scriptPubKeyIn, int32
 
 void IncrementExtraNonce(CBlock* pblock, CBlockIndex* pindexPrev, unsigned int& nExtraNonce)
 {
-    //fprintf(stderr,"RandomXMiner: %s with nExtraNonce=%u\n", __func__, nExtraNonce);
     // Update nExtraNonce
     static uint256 hashPrevBlock;
     if (hashPrevBlock != pblock->hashPrevBlock)
@@ -805,7 +773,6 @@ void IncrementExtraNonce(CBlock* pblock, CBlockIndex* pindexPrev, unsigned int&
 CBlockTemplate* CreateNewBlockWithKey(CReserveKey& reservekey, int32_t nHeight, int32_t gpucount, bool isStake)
 {
     CPubKey pubkey; CScript scriptPubKey; uint8_t *script,*ptr; int32_t i,len;
-    // fprintf(stderr,"%s: with nHeight=%d\n", __func__, nHeight);
 
     // Create a local variable instead of modifying the global assetchains_scriptpub
     auto assetchains_scriptpub = devtax_scriptpub_for_height(nHeight);
@@ -815,7 +782,6 @@ CBlockTemplate* CreateNewBlockWithKey(CReserveKey& reservekey, int32_t nHeight,
         {
             pubkey = ParseHex(ASSETCHAINS_OVERRIDE_PUBKEY);
             scriptPubKey = CScript() << ParseHex(HexStr(pubkey)) << OP_CHECKSIG;
-            // fprintf(stderr,"%s: with pubkey=%s\n", __func__, HexStr(pubkey).c_str() );
         } else {
             len = strlen(assetchains_scriptpub.c_str());
             len >>= 1;
@@ -824,7 +790,6 @@ CBlockTemplate* CreateNewBlockWithKey(CReserveKey& reservekey, int32_t nHeight,
             decode_hex(ptr,len,(char *)assetchains_scriptpub.c_str());
         }
     } else if ( USE_EXTERNAL_PUBKEY != 0 ) {
-        //fprintf(stderr,"use notary pubkey\n");
         pubkey = ParseHex(NOTARY_PUBKEY);
         scriptPubKey = CScript() << ParseHex(HexStr(pubkey)) << OP_CHECKSIG;
     } else {
@@ -845,14 +810,13 @@ CBlockTemplate* CreateNewBlockWithKey(CReserveKey& reservekey, int32_t nHeight,
                     // scriptPubKey = CScript() << OP_DUP << OP_HASH160 << ToByteVector(keyID) << OP_EQUALVERIFY << OP_CHECKSIG;
                     scriptPubKey = GetScriptForDestination(dest);
                     Getscriptaddress(destaddr,scriptPubKey);
-                    fprintf(stderr,"%s: wallet disabled with mineraddress=%s\n", __func__, destaddr);
+                    LogPrintf("%s: wallet disabled with mineraddress=%s\n", __func__, destaddr);
                 } else {
                     return NULL;
                 }
              }
          }
      }
-    // fprintf(stderr,"%s: calling CreateNewBlock\n", __func__);
     return CreateNewBlock(pubkey, scriptPubKey, gpucount, isStake);
 }
 
@@ -866,7 +830,6 @@ void hush_sendmessage(int32_t minpeers,int32_t maxpeers,const char *message,std:
             continue;
         if ( numsent < minpeers || (rand() % 10) == 0 )
         {
-            //fprintf(stderr,"pushmessage\n");
             pnode->PushMessage(message,payload);
             if ( numsent++ > maxpeers )
                 break;
@@ -887,16 +850,6 @@ static bool ProcessBlockFound(CBlock* pblock)
         LOCK(cs_main);
         if (pblock->hashPrevBlock != chainActive.LastTip()->GetBlockHash())
         {
-            uint256 hash; int32_t i;
-            hash = pblock->hashPrevBlock;
-            for (i=31; i>=0; i--)
-                fprintf(stderr,"%02x",((uint8_t *)&hash)[i]);
-            fprintf(stderr," <- prev (stale)\n");
-            hash = chainActive.LastTip()->GetBlockHash();
-            for (i=31; i>=0; i--)
-                fprintf(stderr,"%02x",((uint8_t *)&hash)[i]);
-            fprintf(stderr," <- chainTip (stale)\n");
-
             return error("HushMiner: generated block is stale");
         }
     }
@@ -914,7 +867,6 @@ static bool ProcessBlockFound(CBlock* pblock)
         }
     }
 #endif
-    //fprintf(stderr,"process new block\n");
 
     // Process this block the same as if we had received it from another node
     CValidationState state;
@@ -989,9 +941,7 @@ CBlockIndex *get_chainactive(int32_t height)
             LOCK(cs_main);
             return(chainActive[height]);
         }
-        // else fprintf(stderr,"get_chainactive height %d > active.%d\n",height,chainActive.Tip()->GetHeight());
     }
-    //fprintf(stderr,"get_chainactive null chainActive.Tip() height %d\n",height);
     return(0);
 }
 
@@ -1040,7 +990,7 @@ static void LogProcessMemory(const char* label) {
         PMC_EX pmc = {};
         pmc.cb = sizeof(pmc);
         if (pfn(GetCurrentProcess(), &pmc, sizeof(pmc))) {
-            LogPrintf("MemDiag [%s]: WorkingSet=%.1fMB, PrivateUsage=%.1fMB, PagefileUsage=%.1fMB\n",
+            LogPrint("randomx", "MemDiag [%s]: WorkingSet=%.1fMB, PrivateUsage=%.1fMB, PagefileUsage=%.1fMB\n",
                       label,
                       pmc.WorkingSetSize / (1024.0 * 1024.0),
                       pmc.PrivateUsage / (1024.0 * 1024.0),
@@ -1058,7 +1008,7 @@ static void LogProcessMemory(const char* label) {
             if (strncmp(line, "VmRSS:", 6) == 0 || strncmp(line, "VmSize:", 7) == 0) {
                 // Remove newline
                 line[strlen(line)-1] = '\0';
-                LogPrintf("MemDiag [%s]: %s\n", label, line);
+                LogPrint("randomx", "MemDiag [%s]: %s\n", label, line);
             }
         }
         fclose(f);
@@ -1087,7 +1037,7 @@ struct RandomXDatasetManager {
         if (initialized) return true;
 
         flags |= RANDOMX_FLAG_FULL_MEM;
-        LogPrintf("RandomXDatasetManager: flags=0x%x (JIT=%d, HARD_AES=%d, FULL_MEM=%d, LARGE_PAGES=%d)\n",
+        LogPrint("randomx", "RandomXDatasetManager: flags=0x%x (JIT=%d, HARD_AES=%d, FULL_MEM=%d, LARGE_PAGES=%d)\n",
                   (int)flags,
                   !!(flags & RANDOMX_FLAG_JIT), !!(flags & RANDOMX_FLAG_HARD_AES),
                   !!(flags & RANDOMX_FLAG_FULL_MEM), !!(flags & RANDOMX_FLAG_LARGE_PAGES));
@@ -1128,11 +1078,11 @@ struct RandomXDatasetManager {
         // Log the actual memory addresses to help diagnose sharing issues  
         uint8_t *datasetMemory = (uint8_t*)randomx_get_dataset_memory(dataset);
         size_t datasetSize = datasetItemCount * RANDOMX_DATASET_ITEM_SIZE;
-        LogPrintf("RandomXDatasetManager: allocated shared dataset:\n");
-        LogPrintf("  - Dataset struct at: %p\n", (void*)dataset);
-        LogPrintf("  - Dataset memory at: %p (size: %.2f GB)\n", (void*)datasetMemory, datasetSize / (1024.0 * 1024.0 * 1024.0));
-        LogPrintf("  - Items: %lu, Item size: %d bytes\n", datasetItemCount, RANDOMX_DATASET_ITEM_SIZE);
-        LogPrintf("  - Expected total process memory: ~%.2f GB + ~2MB per mining thread\n", datasetSize / (1024.0 * 1024.0 * 1024.0));
+        LogPrintf("RandomXDatasetManager: allocated shared dataset (%.2f GB, %lu items)\n",
+                  datasetSize / (1024.0 * 1024.0 * 1024.0), datasetItemCount);
+        LogPrint("randomx", "  - Dataset struct at: %p, memory at: %p\n", (void*)dataset, (void*)datasetMemory);
+        LogPrint("randomx", "  - Item size: %d bytes; expected ~%.2f GB + ~2MB per mining thread\n",
+                 RANDOMX_DATASET_ITEM_SIZE, datasetSize / (1024.0 * 1024.0 * 1024.0));
         return true;
     }
 
@@ -1190,9 +1140,9 @@ struct RandomXDatasetManager {
         if (vm != nullptr) {
             int id = ++vmCount;
             uint8_t *datasetMemory = (uint8_t*)randomx_get_dataset_memory(dataset);
-            LogPrintf("RandomXDatasetManager: VM #%d created — VM at %p, shared dataset at %p\n",
+            LogPrint("randomx", "RandomXDatasetManager: VM #%d created — VM at %p, shared dataset at %p\n",
                       id, (void*)vm, (void*)datasetMemory);
-            LogPrintf("  Per-thread overhead: ~2MB scratchpad + ~84KB JIT (dataset NOT copied)\n");
+            LogPrint("randomx", "  Per-thread overhead: ~2MB scratchpad + ~84KB JIT (dataset NOT copied)\n");
             LogProcessMemory("after CreateVM");
         }
         return vm;
@@ -1279,13 +1229,11 @@ void static RandomXMiner()
     randomx_vm *myVM = nullptr;
 
     try {
-        // fprintf(stderr,"RandomXMiner: mining %s with randomx\n",SMART_CHAIN_SYMBOL);
         
         rxdebug("%s: mining %s with randomx\n", SMART_CHAIN_SYMBOL);
        
         while (true)
         {
-            // fprintf(stderr,"RandomXMiner: beginning mining loop on %s with nExtraNonce=%u\n",SMART_CHAIN_SYMBOL, nExtraNonce);
             rxdebug("%s: start mining loop on %s with nExtraNonce=%u\n", SMART_CHAIN_SYMBOL, nExtraNonce);
 
             if (chainparams.MiningRequiresPeers()) {
@@ -1303,10 +1251,8 @@ void static RandomXMiner()
                     if (!fvNodesEmpty )//&& !IsInitialBlockDownload())
                         break;
                     MilliSleep(15000);
-                    //fprintf(stderr,"fvNodesEmpty %d IsInitialBlockDownload(%s) %d\n",(int32_t)fvNodesEmpty,SMART_CHAIN_SYMBOL,(int32_t)IsInitialBlockDownload());
 
                 } while (true);
-                //fprintf(stderr,"%s Found peers\n",SMART_CHAIN_SYMBOL);
                 miningTimer.start();
             }
 
@@ -1320,7 +1266,7 @@ void static RandomXMiner()
 
             // If we don't have a valid chain tip to work from, wait and try again.
             if (pindexPrev == nullptr) {
-                fprintf(stderr,"%s: null pindexPrev, trying again...\n",__func__);
+                LogPrint("randomx", "%s: null pindexPrev, trying again...\n",__func__);
                 MilliSleep(1000);
                 continue;
             }
@@ -1331,7 +1277,6 @@ void static RandomXMiner()
                 Mining_start = (uint32_t)time(NULL);
             }
 
-            // fprintf(stderr,"RandomXMiner: using initial key with interval=%d and lag=%d\n", randomxInterval, randomxBlockLag);
             rxdebug("%s: using initial key, interval=%d, lag=%d, Mining_height=%u\n", randomxInterval, randomxBlockLag, Mining_height);
             // Update the shared dataset key — only one thread will actually rebuild,
             // others will see the key is already current and skip.
@@ -1364,14 +1309,12 @@ void static RandomXMiner()
 
             // Acquire shared lock to prevent dataset rebuild while we're hashing
             boost::shared_lock<boost::shared_mutex> datasetLock(g_rxDatasetManager->datasetMtx);
-            //fprintf(stderr,"RandomXMiner: Mining_start=%u\n", Mining_start);
 #ifdef ENABLE_WALLET
             CBlockTemplate *ptr = CreateNewBlockWithKey(reservekey, pindexPrev->GetHeight()+1, gpucount, 0);
 #else
             CBlockTemplate *ptr = CreateNewBlockWithKey();
 #endif
 
-            // fprintf(stderr,"RandomXMiner: created new block with Mining_start=%u\n",Mining_start);
             rxdebug("%s: created new block with Mining_start=%u\n",Mining_start);
             if ( ptr == 0 )
             {
@@ -1384,11 +1327,10 @@ void static RandomXMiner()
                 }
                 static uint32_t counter;
                 if ( counter++ < 10 )
-                    fprintf(stderr,"RandomXMiner: created illegal blockB, retry with counter=%u\n", counter);
+                    LogPrint("randomx", "RandomXMiner: created illegal blockB, retry with counter=%u\n", counter);
                 sleep(1);
                 continue;
             }
-            // fprintf(stderr,"RandomXMiner: getting block template\n");
             rxdebug("%s: getting block template\n");
 
             unique_ptr<CBlockTemplate> pblocktemplate(ptr);
@@ -1410,14 +1352,13 @@ void static RandomXMiner()
                 {
                     static uint32_t counter;
                     if ( counter++ < 10 )
-                        fprintf(stderr,"skip generating %s on-demand block, no tx avail\n",SMART_CHAIN_SYMBOL);
+                        LogPrint("randomx", "skip generating %s on-demand block, no tx avail\n",SMART_CHAIN_SYMBOL);
                     sleep(10);
                     continue;
-                } else fprintf(stderr,"%s vouts.%d mining.%d vs %d\n",SMART_CHAIN_SYMBOL,(int32_t)pblock->vtx[0].vout.size(),Mining_height,ASSETCHAINS_MINHEIGHT);
+                } else LogPrint("randomx", "%s vouts.%d mining.%d vs %d\n",SMART_CHAIN_SYMBOL,(int32_t)pblock->vtx[0].vout.size(),Mining_height,ASSETCHAINS_MINHEIGHT);
             }
             rxdebug("%s: incrementing extra nonce\n");
             IncrementExtraNonce(pblock, pindexPrev, nExtraNonce);
-            // fprintf(stderr,"RandomXMiner: %u transactions in block\n",(int32_t)pblock->vtx.size());
             LogPrintf("Running HushRandomXMiner with %u transactions in block (%u bytes)\n",pblock->vtx.size(),::GetSerializeSize(*pblock,SER_NETWORK,PROTOCOL_VERSION));
 
             // Search
@@ -1433,12 +1374,11 @@ void static RandomXMiner()
             while (true)
             {
                 if ( gotinvalid != 0 ) {
-                    fprintf(stderr,"RandomXMiner: gotinvalid=%d\n",gotinvalid);
+                    LogPrint("randomx", "RandomXMiner: gotinvalid=%d\n",gotinvalid);
                     break;
                 }
                 hush_longestchain();
 
-                // fprintf(stderr,"RandomXMiner: solving with nNonce = %s\n",pblock->nNonce.ToString().c_str());
                 rxdebug("%s: solving with nNonce = %s\n",pblock->nNonce.ToString().c_str());
                 arith_uint256 hashTarget;
                 hashTarget = HASHTarget;
@@ -1448,8 +1388,6 @@ void static RandomXMiner()
                 // Serialize block header without nSolution but with nNonce for deterministic RandomX input
                 randomxInput << rxInput;
 
-                // std::cerr << "RandomXMiner: randomxInput=" << HexStr(randomxInput) << "\n";
-                // fprintf(stderr,"RandomXMiner: created randomxKey=%s , randomxInput.size=%lu\n", randomxKey, randomxInput.size() ); //randomxInput);
                 rxdebug("%s: randomxKey=%s randomxInput=%s\n", randomxKey, HexStr(randomxInput).c_str());
 
                 rxdebug("%s: calculating randomx hash\n");
@@ -1478,7 +1416,6 @@ void static RandomXMiner()
                     rxdebug("%s: Checking solution against target\n");
                     pblock->nSolution = soln;
                     solutionTargetChecks.increment();
-                    // fprintf(stderr,"%s: solutionTargetChecks=%lu\n", __func__, solutionTargetChecks.get());
                     B = *pblock;
                     h = UintToArith256(B.GetHash());
 
@@ -1508,17 +1445,6 @@ void static RandomXMiner()
                     SetSkipRandomXValidation(false);
                     if ( !fValid )
                     {
-                        h = UintToArith256(B.GetHash());
-                        fprintf(stderr,"RandomXMiner: TestBlockValidity FAILED at ht.%d nNonce=%s hash=",
-                                Mining_height, pblock->nNonce.ToString().c_str());
-                        for (z=31; z>=0; z--)
-                            fprintf(stderr,"%02x",((uint8_t *)&h)[z]);
-                        fprintf(stderr," nSolution.size=%lu\n", B.nSolution.size());
-                        // Dump nSolution hex for comparison with validator
-                        fprintf(stderr,"RandomXMiner: nSolution=");
-                        for (unsigned i = 0; i < B.nSolution.size(); i++)
-                            fprintf(stderr,"%02x", B.nSolution[i]);
-                        fprintf(stderr,"\n");
                         LogPrintf("RandomXMiner: TestBlockValidity FAILED at ht.%d, gotinvalid=1, state=%s\n",
                                   Mining_height, state.GetRejectReason());
                         gotinvalid = 1;
@@ -1575,13 +1501,13 @@ void static RandomXMiner()
                     {
                         if ( Mining_height > ASSETCHAINS_MINHEIGHT )
                         {
-                            fprintf(stderr,"%s: no nodes, break\n", __func__);
+                            LogPrint("randomx", "%s: no nodes, break\n", __func__);
                             break;
                         }
                     }
                     if ((UintToArith256(pblock->nNonce) & 0xffff) == 0xffff)
                     {
-                        fprintf(stderr,"%s: nonce & 0xffff == 0xffff, break\n", __func__);
+                        LogPrint("randomx", "%s: nonce & 0xffff == 0xffff, break\n", __func__);
                         break;
                     }
                     // Update nNonce and nTime
@@ -1604,7 +1530,6 @@ void static RandomXMiner()
            LogPrintf("%s: destroyed vm via thread interrupt\n", __func__);
        } else {
            LogPrintf("%s: WARNING myVM already null in thread interrupt handler, skipping destroy (would double-free)\n", __func__);
-           fprintf(stderr, "%s: WARNING myVM already null in thread interrupt, would have double-freed!\n", __func__);
        }
        // Dataset and cache are owned by g_rxDatasetManager — do NOT release here
 
@@ -1613,7 +1538,7 @@ void static RandomXMiner()
    } catch (const std::runtime_error &e) {
        miningTimer.stop();
        c.disconnect();
-       fprintf(stderr,"RandomXMiner: runtime error: %s\n", e.what());
+       LogPrintf("RandomXMiner: runtime error: %s\n", e.what());
 
        if (myVM != nullptr) {
            randomx_destroy_vm(myVM);
@@ -1672,7 +1597,7 @@ void static BitcoinMiner()
     assert(solver == "tromp" || solver == "default");
     LogPrint("pow", "Using Equihash solver \"%s\" with n = %u, k = %u\n", solver, n, k);
     if ( SMART_CHAIN_SYMBOL[0] != 0 )
-        fprintf(stderr,"notaryid.%d Mining.%s with %s\n",notaryid,SMART_CHAIN_SYMBOL,solver.c_str());
+        LogPrintf("notaryid.%d Mining.%s with %s\n",notaryid,SMART_CHAIN_SYMBOL,solver.c_str());
     std::mutex m_cs;
     bool cancelSolver = false;
     boost::signals2::connection c = uiInterface.NotifyBlockTip.connect(
@@ -1685,7 +1610,7 @@ void static BitcoinMiner()
 
     try {
         if ( SMART_CHAIN_SYMBOL[0] != 0 )
-            fprintf(stderr,"try %s Mining with %s\n",SMART_CHAIN_SYMBOL,solver.c_str());
+            LogPrintf("try %s Mining with %s\n",SMART_CHAIN_SYMBOL,solver.c_str());
         while (true)
         {
             if (chainparams.MiningRequiresPeers()) {
@@ -1703,10 +1628,8 @@ void static BitcoinMiner()
                     if (!fvNodesEmpty )//&& !IsInitialBlockDownload())
                         break;
                     MilliSleep(15000);
-                    //fprintf(stderr,"fvNodesEmpty %d IsInitialBlockDownload(%s) %d\n",(int32_t)fvNodesEmpty,SMART_CHAIN_SYMBOL,(int32_t)IsInitialBlockDownload());
 
                 } while (true);
-                //fprintf(stderr,"%s Found peers\n",SMART_CHAIN_SYMBOL);
                 miningTimer.start();
             }
             //
@@ -1717,7 +1640,7 @@ void static BitcoinMiner()
 
             // If we don't have a valid chain tip to work from, wait and try again.
             if (pindexPrev == nullptr) {
-                fprintf(stderr,"%s: null pindexPrev, trying again...\n",__func__);
+                LogPrint("pow", "%s: null pindexPrev, trying again...\n",__func__);
                 MilliSleep(1000);
                 continue;
             }
@@ -1729,7 +1652,6 @@ void static BitcoinMiner()
             }
             if ( SMART_CHAIN_SYMBOL[0] != 0 && ASSETCHAINS_STAKED == 0 )
             {
-                //fprintf(stderr,"%s create new block ht.%d\n",SMART_CHAIN_SYMBOL,Mining_height);
                 //sleep(3);
             }
 
@@ -1750,11 +1672,10 @@ void static BitcoinMiner()
                 }
                 static uint32_t counter;
                 if ( counter++ < 10 && ASSETCHAINS_STAKED == 0 )
-                    fprintf(stderr,"created illegal blockB, retry\n");
+                    LogPrint("pow", "created illegal blockB, retry\n");
                 sleep(1);
                 continue;
             }
-            //fprintf(stderr,"get template\n");
             unique_ptr<CBlockTemplate> pblocktemplate(ptr);
             if (!pblocktemplate.get())
             {
@@ -1775,14 +1696,13 @@ void static BitcoinMiner()
                     {
                         static uint32_t counter;
                         if ( counter++ < 10 )
-                            fprintf(stderr,"skip generating %s on-demand block, no tx avail\n",SMART_CHAIN_SYMBOL);
+                            LogPrint("pow", "skip generating %s on-demand block, no tx avail\n",SMART_CHAIN_SYMBOL);
                         sleep(10);
                         continue;
-                    } else fprintf(stderr,"%s vouts.%d mining.%d vs %d\n",SMART_CHAIN_SYMBOL,(int32_t)pblock->vtx[0].vout.size(),Mining_height,ASSETCHAINS_MINHEIGHT);
+                    } else LogPrint("pow", "%s vouts.%d mining.%d vs %d\n",SMART_CHAIN_SYMBOL,(int32_t)pblock->vtx[0].vout.size(),Mining_height,ASSETCHAINS_MINHEIGHT);
                 }
             }
             IncrementExtraNonce(pblock, pindexPrev, nExtraNonce);
-            //fprintf(stderr,"Running HushMiner.%s with %u transactions in block\n",solver.c_str(),(int32_t)pblock->vtx.size());
             LogPrintf("Running HushMiner.%s with %u transactions in block (%u bytes)\n",solver.c_str(),pblock->vtx.size(),::GetSerializeSize(*pblock,SER_NETWORK,PROTOCOL_VERSION));
 
             // Search
@@ -1798,7 +1718,6 @@ void static BitcoinMiner()
             gotinvalid = 0;
             while (true)
             {
-                //fprintf(stderr,"gotinvalid.%d\n",gotinvalid);
                 if ( gotinvalid != 0 )
                     break;
                 hush_longestchain();
@@ -1823,7 +1742,6 @@ void static BitcoinMiner()
                 if ( HUSH_MININGTHREADS > 0 && ASSETCHAINS_STAKED > 0 && ASSETCHAINS_STAKED < 100 && Mining_height > 10 )
                     hashTarget = HASHTarget_POW;
                 //else if ( ASSETCHAINS_ADAPTIVEPOW > 0 )
-                //    hashTarget = HASHTarget_POW;
                 else hashTarget = HASHTarget;
                 std::function<bool(std::vector<unsigned char>)> validBlock =
 #ifdef ENABLE_WALLET
@@ -1837,7 +1755,6 @@ void static BitcoinMiner()
                     LogPrint("pow", "- Checking solution against target\n");
                     pblock->nSolution = soln;
                     solutionTargetChecks.increment();
-                    // fprintf(stderr, "%s: solutionTargetChecks=%lu\n", __func__, solutionTargetChecks.get());
                     B = *pblock;
                     h = UintToArith256(B.GetHash());
                     /*for (z=31; z>=16; z--)
@@ -1857,13 +1774,12 @@ void static BitcoinMiner()
                     }
                     if ( IS_HUSH_NOTARY != 0 && B.nTime > GetTime() )
                     {
-                        //fprintf(stderr,"need to wait %d seconds to submit block\n",(int32_t)(B.nTime - GetTime()));
                         while ( GetTime() < B.nTime-2 )
                         {
                             sleep(1);
                             if ( chainActive.LastTip()->GetHeight() >= Mining_height )
                             {
-                                fprintf(stderr,"new block arrived\n");
+                                LogPrint("pow", "new block arrived\n");
                                 return(false);
                             }
                         }
@@ -1877,13 +1793,6 @@ void static BitcoinMiner()
                                 MilliSleep((rand() % (r * 1000)) + 1000);
                         }
                     }
-                    else
-                    {
-                        uint256 tmp = B.GetHash();
-                        int32_t z; for (z=31; z>=0; z--)
-                            fprintf(stderr,"%02x",((uint8_t *)&tmp)[z]);
-                        fprintf(stderr," mined %s block %d!\n",SMART_CHAIN_SYMBOL,Mining_height);
-                    }
                     CValidationState state;
 
                     //{ LOCK(cs_main);
@@ -1891,8 +1800,6 @@ void static BitcoinMiner()
                     {
                         h = UintToArith256(B.GetHash());
                         //for (z=31; z>=0; z--)
-                        //    fprintf(stderr,"%02x",((uint8_t *)&h)[z]);
-                        //fprintf(stderr," Invalid block mined, try again\n");
                         gotinvalid = 1;
                         return(false);
                     }
@@ -1967,8 +1874,6 @@ void static BitcoinMiner()
                             if (found) {
                                 int32_t i; uint256 hash = pblock->GetHash();
                                 //for (i=0; i<32; i++)
-                                //    fprintf(stderr,"%02x",((uint8_t *)&hash)[i]);
-                                //fprintf(stderr," <- %s Block found %d\n",SMART_CHAIN_SYMBOL,Mining_height);
                                 //FOUND_BLOCK = 1;
                                 //HUSH_MAYBEMINED = Mining_height;
                                 break;
@@ -1993,14 +1898,14 @@ void static BitcoinMiner()
                     {
                         if ( SMART_CHAIN_SYMBOL[0] == 0 || Mining_height > ASSETCHAINS_MINHEIGHT )
                         {
-                            fprintf(stderr,"no nodes, break\n");
+                            LogPrint("pow", "no nodes, break\n");
                             break;
                         }
                     }
                     if ((UintToArith256(pblock->nNonce) & 0xffff) == 0xffff)
                     {
                         //if ( 0 && SMART_CHAIN_SYMBOL[0] != 0 )
-                        fprintf(stderr,"0xffff, break\n");
+                        LogPrint("pow", "0xffff, break\n");
                         break;
                     }
                     if (mempool.GetTransactionsUpdated() != nTransactionsUpdatedLast && GetTime() - nStart > 60)
@@ -2024,7 +1929,6 @@ void static BitcoinMiner()
                         HASHTarget.SetCompact(pblock->nBits);
                         hashTarget = HASHTarget;
                         savebits = pblock->nBits;
-                        //hashTarget = HASHTarget_POW = hush_adaptivepow_target(Mining_height,HASHTarget,pblock->nTime);
                     }
                     /*if ( NOTARY_PUBKEY33[0] == 0 )
                     {
@@ -2104,7 +2008,6 @@ void static BitcoinMiner()
             g_rxDatasetManager = new RandomXDatasetManager();
             if (!g_rxDatasetManager->Init()) {
                 LogPrintf("%s: FATAL - Failed to initialize shared RandomX dataset manager\n", __func__);
-                fprintf(stderr, "%s: FATAL - Failed to initialize shared RandomX dataset manager\n", __func__);
                 delete g_rxDatasetManager;
                 g_rxDatasetManager = nullptr;
                 delete minerThreads;

src/net.cpp

@@ -56,7 +56,7 @@ extern uint8_t ASSETCHAINS_CLEARNET;
 // Run asmap health check every 24hr by default
 #define ASMAP_HEALTHCHECK_INTERVAL 24*60*60
 
-// This is every 2 blocks, on avg, on HUSH3
+// Interval (seconds) between zindex stat dumps when -zindex is enabled.
 #define DUMP_ZINDEX_INTERVAL 150
 
 #define CHECK_PLZ_STOP_INTERVAL 120
@@ -79,7 +79,9 @@ extern uint8_t ASSETCHAINS_CLEARNET;
 // We add a random period time (0 to 1 seconds) to feeler connections to prevent synchronization.
 #define FEELER_SLEEP_WINDOW 1
 
-#define USE_TLS "encrypted as fuck"
+// Marker macro that enables the TLS p2p transport. Only its definedness is
+// ever tested (via defined()/#ifdef); the string value itself is never used.
+#define USE_TLS "enabled"
 
 #if defined(USE_TLS) && !defined(TLS1_3_VERSION)
     // minimum secure protocol is 1.3
@@ -468,6 +470,13 @@ CNode* ConnectNode(CAddress addrConnect, const char *pszDest) {
     bool connected = false;
     std::unique_ptr<Sock> sock;
 
+    // When connecting by name (pszDest is set, e.g. -connect / -addnode host:port
+    // or "addnode <host> onetry"), addrConnect is an empty placeholder — the real
+    // target is resolved from pszDest by ConnectSocketByName() below. Only validate
+    // addrConnect when we are dialing it directly (pszDest == NULL); otherwise
+    // IsValid()/IsReachable() on the empty address abort the connection before it is
+    // ever attempted, which silently breaks -connect.
+    if (!pszDest) {
         if (!addrConnect.IsValid()) {
             return NULL;
         }
@@ -475,6 +484,7 @@ CNode* ConnectNode(CAddress addrConnect, const char *pszDest) {
         if (!IsReachable(addrConnect)) {
             return NULL;
         }
+    }
 
     if (addrConnect.GetNetwork() == NET_I2P && m_i2p_sam_session.get() != nullptr) {
             i2p::Connection conn;
@@ -614,7 +624,7 @@ void DumpBanlist()
     if (bandb.Write(banmap)) {
         SetBannedSetDirty(false);
     }
-    fprintf(stderr,"%s: Dumping banlist with %lu items\n", __func__, banmap.size());
+    LogPrint("net", "%s: Dumping banlist with %lu items\n", __func__, banmap.size());
 
     LogPrint("net", "Flushed %d banned node ips/subnets to banlist.dat  %dms\n",
         banmap.size(), GetTimeMillis() - nStart);
@@ -642,7 +652,7 @@ bool CNode::IsBanned(CNetAddr ip)
             CBanEntry banEntry = (*it).second;
 
             if(subNet.Match(ip) && GetTime() < banEntry.nBanUntil) {
-                fprintf(stderr,"%s: found banned subnet %s\n", __func__, subNet.ToString().c_str());
+                LogPrint("net", "%s: found banned subnet %s\n", __func__, subNet.ToString().c_str());
                 fResult = true;
             }
         }
@@ -676,7 +686,7 @@ void CNode::Ban(const CSubNet& subNet, const BanReason &banReason, int64_t banti
     if (bantimeoffset > 0)
         banEntry.nBanUntil = (sinceUnixEpoch ? 0 : GetTime() )+bantimeoffset;
 
-    fprintf(stderr, "%s: banning %s until %ld with bantimeoffset=%ld sinceUnixEpoch=%d\n", __func__, subNet.ToString().c_str(), banEntry.nBanUntil, bantimeoffset, sinceUnixEpoch);
+    LogPrint("net", "%s: banning %s until %ld with bantimeoffset=%ld sinceUnixEpoch=%d\n", __func__, subNet.ToString().c_str(), banEntry.nBanUntil, bantimeoffset, sinceUnixEpoch);
     {
         LOCK(cs_setBanned);
         if (setBanned[subNet].nBanUntil < banEntry.nBanUntil) {
@@ -689,14 +699,15 @@ void CNode::Ban(const CSubNet& subNet, const BanReason &banReason, int64_t banti
     {
         LOCK(cs_vNodes);
         for (CNode* pnode : vNodes) {
-            if (subNet.Match(static_cast<CNetAddr>(pnode->addr)))
-                fprintf(stderr, "%s: disconnecting from banned node %s\n", __func__, pnode->addr.ToString().c_str() );
+            if (subNet.Match(static_cast<CNetAddr>(pnode->addr))) {
+                LogPrint("net", "%s: disconnecting from banned node %s\n", __func__, pnode->addr.ToString().c_str() );
                 pnode->fDisconnect = true;
             }
         }
+    }
 
     if(banReason == BanReasonManuallyAdded) {
-        fprintf(stderr,"%s: dumping banlist after manual ban\n", __func__);
+        LogPrint("net", "%s: dumping banlist after manual ban\n", __func__);
         DumpBanlist(); //store banlist to disk immediately if user requested ban
     }
 }
@@ -815,7 +826,7 @@ void CNode::copyStats(CNodeStats &stats, const std::vector<bool> &m_asmap)
         nPingUsecWait = GetTimeMicros() - nPingUsecStart;
     }
 
-    // Raw ping time is in microseconds, but show it to user as whole seconds (Hush users should be well used to small numbers with many decimal places by now :)
+    // Raw ping time is in microseconds; convert to seconds for display to the user.
     stats.dPingTime = (((double)nPingUsecTime) / 1e6);
     stats.dMinPing  = (((double)nMinPingUsecTime) / 1e6);
     stats.dPingWait = (((double)nPingUsecWait) / 1e6);
@@ -1722,7 +1733,6 @@ void ThreadOpenConnections()
         boost::this_thread::interruption_point();
 
         // Add seed nodes if DNS seeds are all down (an infrastructure attack?).
-        // if (addrman.size() == 0 && (GetTime() - nStart > 60)) {
         if (GetTime() - nStart > 60) {
             static bool done = false;
             if (!done) {
@@ -1852,7 +1862,6 @@ void ThreadOpenConnections()
                 int randsleep = GetRandInt(FEELER_SLEEP_WINDOW * 1000);
                 MilliSleep(randsleep);
                 LogPrint("net", "Making feeler connection to %s\n", addrConnect.ToString().c_str());
-                printf("%s: Making feeler connection to %s\n", __func__, addrConnect.ToString().c_str());
             }
 
             //int failures = setConnected.size() >= std::min(nMaxConnections - 1, 2);
@@ -2511,22 +2520,24 @@ void RelayTransaction(const CTransaction& tx, const CDataStream& ss)
     // If we have no nodes to relay to, there is nothing to do
     if(vNodes.size() == 0) {
         if (HUSH_TESTNODE==0) {
-            fprintf(stderr, "%s: No nodes to relay to!\n", __func__ );
+            LogPrint("net", "%s: No nodes to relay to!\n", __func__ );
         }
         return;
     }
 
-    // We always round down, except when we have only 1 connection
+    // Relay to half of our peers, rounding down, but never fewer than 1.
+    // Equivalent to max(1, vNodes.size()/2): the ternary picks 1 only when the
+    // integer division vNodes.size()/2 is 0 (i.e. exactly 1 connection).
     auto newSize = (vNodes.size() / 2) == 0 ? 1 : (vNodes.size() / 2);
 
     std::shuffle( vRelayNodes.begin(), vRelayNodes.end(), std::mt19937(GetRand(std::numeric_limits<uint32_t>::max())) );
 
     vRelayNodes.resize(newSize);
     if (HUSH_TESTNODE==1 && vNodes.size() == 0) {
-        fprintf(stderr, "%s: -testnode=1, no peers, not relaying\n", __func__ );
+        LogPrint("net", "%s: -testnode=1, no peers, not relaying\n", __func__ );
         return;
     } else {
-        fprintf(stderr, "%s: Relaying %s to %lu of %lu peers\n", __func__, tx.GetHash().GetHex().c_str(), newSize, vNodes.size() );
+        LogPrint("net", "%s: Relaying %s to %lu of %lu peers\n", __func__, tx.GetHash().GetHex().c_str(), newSize, vNodes.size() );
     }
 
     // Only relay to randomly chosen 50% of peers
@@ -2775,7 +2786,7 @@ bool CNode::GetTlsValidate()
 {
     if (tlsValidate == eTlsOption::FALLBACK_UNSET)
     {
-        // This is useful for private Hush Arrakis Chains, that want to exist
+        // This is useful for private DragonX-based chains that want to exist
         // on a closed VPN with an internal CA or trusted cert system, or
         // various other use cases
         if ( GetBoolArg("-tlsvalidate", false)) {

src/net.h

@@ -44,9 +44,12 @@
 #include <boost/filesystem/path.hpp>
 #include <boost/foreach.hpp>
 #include <boost/signals2/signal.hpp>
-// Enable WolfSSL Support for Hush
+// Enable WolfSSL support for DragonX
 #include <wolfssl/options.h>
-// TODO: these are not set correctly by wolfssl for some reason. Ja bless.
+// Force-enable wolfSSL's constant-time (timing-resistant) ECC and TFM code paths.
+// These are feature-enable macros that wolfSSL checks with #ifdef, so the numeric
+// value is immaterial to behavior; the value 420 is arbitrary and must simply be
+// non-empty. Redefined here because wolfssl/options.h does not reliably set them.
 #undef ECC_TIMING_RESISTANT
 #undef TFM_TIMING_RESISTANT
 #define ECC_TIMING_RESISTANT 420

src/pow.cpp

@@ -97,75 +97,13 @@ bnTarget = RT_CST_RST (bnTarget, ts, cw, numerator, denominator, W, T, past);
 #define T ASSETCHAINS_BLOCKTIME
 #define K ((int64_t)1000000)
 
-#ifdef original_algo
-arith_uint256 oldRT_CST_RST(int32_t height,uint32_t nTime,arith_uint256 bnTarget,uint32_t *ts,arith_uint256 *ct,int32_t numerator,int32_t denominator,int32_t W,int32_t past)
+// The proof-of-work limit for the active algorithm: Equihash chains use params.powLimit,
+// everything else (DragonX = RandomX) uses params.powAlternate. Shared by the retarget
+// functions below, where this selection was previously copy-pasted as an if/else.
+static arith_uint256 PowLimitForAlgo(const Consensus::Params& params)
 {
-    //if (ts.size() < 2*W || ct.size() < 2*W ) { exit; } // error. a vector was too small
-    //if (ts.size() < past+W || ct.size() < past+W ) { past = min(ct.size(), ts.size()) - W; } // past was too small, adjust
-    int64_t altK; int32_t i,j,k,ii=0; // K is a scaling factor for integer divisions
-    if ( height < 64 )
-        return(bnTarget);
-    //if ( ((ts[0]-ts[W]) * W * 100)/(W-1) < (T * numerator * 100)/denominator )
-    if ( (ts[0] - ts[W]) < (T * numerator)/denominator )
-    {
-        //bnTarget = ((ct[0]-ct[1])/K) * max(K,(K*(nTime-ts[0])*(ts[0]-ts[W])*denominator/numerator)/T/T);
-        bnTarget = ct[0] / arith_uint256(K);
-        //altK = (K * (nTime-ts[0]) * (ts[0]-ts[W]) * denominator * W) / (numerator * (W-1) * (T * T));
-        altK = (K * (nTime-ts[0]) * (ts[0]-ts[W]) * denominator) / (numerator * (T * T));
-        fprintf(stderr,"ht.%d initial altK.%lld %d * %d * %d / %d\n",height,(long long)altK,(nTime-ts[0]),(ts[0]-ts[W]),denominator,numerator);
-        if ( altK > K )
-            altK = K;
-        bnTarget *= arith_uint256(altK);
-        if ( altK < K )
-            return(bnTarget);
+    return UintToArith256(ASSETCHAINS_ALGO == ASSETCHAINS_EQUIHASH ? params.powLimit : params.powAlternate);
 }
-    /*  Check past 24 blocks for any sum of 3 STs < T/2 triggers. This is messy
-     because the blockchain does not allow us to store a variable to know
-     if we are currently in a triggered state that is making a sequence of
-     adjustments to prevTargets, so we have to look for them.
-     Nested loops do this: if block emission has not slowed to be back on track at
-     any time since most recent trigger and we are at current block, aggressively
-     adust prevTarget. */
-    
-    for (j=past-1; j>=2; j--)
-    {
-        if ( ts[j]-ts[j+W] < T*numerator/denominator )
-        {
-            ii = 0;
-            for (i=j-2; i>=0; i--)
-            {
-                ii++;
-                // Check if emission caught up. If yes, "trigger stopped at i".
-                // Break loop to try more recent j's to see if trigger activates again.
-                if ( (ts[i] - ts[j+W]) > (ii+W)*T )
-                    break;
-                
-                // We're here, so there was a TS[j]-TS[j-3] < T/2 trigger in the past and emission rate has not yet slowed up to be back on track so the "trigger is still active", aggressively adjusting target here at block "i"
-                if ( i == 0 )
-                {
-                    /* We made it all the way to current block. Emission rate since
-                     last trigger never slowed enough to get back on track, so adjust again.
-                     If avg last 3 STs = T, this increases target to prevTarget as ST increases to T.
-                     This biases it towards ST=~1.75*T to get emission back on track.
-                     If avg last 3 STs = T/2, target increases to prevTarget at 2*T.
-                     Rarely, last 3 STs can be 1/2 speed => target = prevTarget at T/2, & 1/2 at T.*/
-                    
-                    //bnTarget = ((ct[0]-ct[W])/W/K) * (K*(nTime-ts[0])*(ts[0]-ts[W]))/W/T/T;
-                    bnTarget = ct[0];
-                    for (k=1; k<W; k++)
-                        bnTarget += ct[k];
-                    bnTarget /= arith_uint256(W * K);
-                    altK = (K * (nTime-ts[0]) * (ts[0]-ts[W])) / (W * T * T);
-                    fprintf(stderr,"ht.%d made it to i == 0, j.%d ii.%d altK %lld (%d * %d) %u - %u W.%d\n",height,j,ii,(long long)altK,(nTime-ts[0]),(ts[0]-ts[W]),ts[0],ts[W],W);
-                    bnTarget *= arith_uint256(altK);
-                    j = 0; // It needed adjusting, we adjusted it, we're finished, so break out of j loop.
-                }
-            }
-        }
-    }
-    return(bnTarget);
-}
-#endif
 
 arith_uint256 RT_CST_RST_outer(int32_t height,uint32_t nTime,arith_uint256 bnTarget,uint32_t *ts,arith_uint256 *ct,int32_t numerator,int32_t denominator,int32_t W,int32_t past)
 {
@@ -183,13 +121,7 @@ arith_uint256 RT_CST_RST_outer(int32_t height,uint32_t nTime,arith_uint256 bnTar
         }
         if ( bnTarget > mintarget )
             bnTarget = mintarget;
-        {
-            int32_t z;
-            for (z=31; z>=0; z--)
-                fprintf(stderr,"%02x",((uint8_t *)&bnTarget)[z]);
     }
-        fprintf(stderr," ht.%d initial W.%d outerK.%lld %d * %d * %d / %d\n",height,W,(long long)outerK,(nTime-ts[0]),(ts[0]-ts[W]),denominator,numerator);
-    } //else fprintf(stderr,"ht.%d no outer trigger %d >= %d\n",height,(ts[0] - ts[W]),(T * numerator)/denominator);
     return(bnTarget);
 }
 
@@ -202,13 +134,6 @@ arith_uint256 RT_CST_RST_target(int32_t height,uint32_t nTime,arith_uint256 bnTa
     bnTarget /= arith_uint256(width * K);
     innerK = (K * (nTime-ts[0]) * (ts[0]-ts[width])) / (width * T * T);
     bnTarget *= arith_uint256(innerK);
-    if ( 0 )
-    {
-        int32_t z;
-        for (z=31; z>=0; z--)
-            fprintf(stderr,"%02x",((uint8_t *)&bnTarget)[z]);
-        fprintf(stderr," ht.%d innerK %lld (%d * %d) %u - %u width.%d\n",height,(long long)innerK,(nTime-ts[0]),(ts[0]-ts[width]),ts[0],ts[width],width);
-    }
     return(bnTarget);
 }
 
@@ -223,12 +148,6 @@ arith_uint256 RT_CST_RST_inner(int32_t height,uint32_t nTime,arith_uint256 bnTar
         bnTarget = RT_CST_RST_target(height,nTime,bnTarget,ts,ct,W);
         if ( bnTarget == origtarget ) // force zawyflag to 1
             bnTarget = mintarget;
-        {
-            int32_t z;
-            for (z=31; z>=0; z--)
-                fprintf(stderr,"%02x",((uint8_t *)&bnTarget)[z]);
-        }
-        fprintf(stderr," height.%d O.%-2d, W.%-2d width.%-2d %4d vs %-4d, deficit %4d tip.%d\n",height,outeri,W,width,(ts[0] - ts[width]),expected,expected - (ts[0] - ts[width]),nTime-ts[0]);
     }
     return(bnTarget);
 }
@@ -288,31 +207,19 @@ arith_uint256 zawy_TSA_EMA(int32_t height,int32_t tipdiff,arith_uint256 prevTarg
     B = (bnTarget / arith_uint256(360000)) * arith_uint256(tipdiff * zawy_exponential_val360000(tipdiff/2));
     C = (bnTarget / arith_uint256(360000)) * arith_uint256(T * zawy_exponential_val360000(tipdiff/2));
     bnTarget = ((A + B - C) / arith_uint256(tipdiff)) * arith_uint256(K*T);
-    {
-        int32_t z;
-        for (z=31; z>=0; z--)
-            fprintf(stderr,"%02x",((uint8_t *)&bnTarget)[z]);
-    }
-    fprintf(stderr," ht.%d TSA bnTarget tipdiff.%d\n",height,tipdiff);
     return(bnTarget);
 }
 
 unsigned int GetNextWorkRequired(const CBlockIndex* pindexLast, const CBlockHeader *pblock, const Consensus::Params& params)
 {
-    if (pindexLast->GetHeight() == 340000) {
-        LogPrintf("%s: Using blocktime=%d\n",__func__,ASSETCHAINS_BLOCKTIME);
-    }
     //if (ASSETCHAINS_ALGO != ASSETCHAINS_EQUIHASH && ASSETCHAINS_STAKED == 0)
     if (ASSETCHAINS_ALGO != ASSETCHAINS_EQUIHASH && ASSETCHAINS_ALGO != ASSETCHAINS_RANDOMX) {
-        fprintf(stderr,"%s: using lwma for next work\n",__func__);
+        LogPrint("pow","%s: using lwma for next work\n",__func__);
         return lwmaGetNextWorkRequired(pindexLast, pblock, params);
     }
 
     arith_uint256 bnLimit;
-    if (ASSETCHAINS_ALGO == ASSETCHAINS_EQUIHASH)
-        bnLimit = UintToArith256(params.powLimit);
-    else
-        bnLimit = UintToArith256(params.powAlternate);
+    bnLimit = PowLimitForAlgo(params);
     unsigned int nProofOfWorkLimit = bnLimit.GetCompact();
     // Genesis block
     if (pindexLast == NULL )
@@ -386,13 +293,11 @@ unsigned int GetNextWorkRequired(const CBlockIndex* pindexLast, const CBlockHead
         {
             blocktime = pindexFirst->nTime;
             diff = (pblock->nTime - blocktime);
-            //fprintf(stderr,"%d ",diff);
             if ( i < 6 )
             {
                 diff -= (8+i)*ASSETCHAINS_BLOCKTIME;
                 if ( diff > mult )
                 {
-                    //fprintf(stderr,"i.%d diff.%d (%u - %u - %dx)\n",i,(int32_t)diff,pblock->nTime,pindexFirst->nTime,(8+i));
                     mult = diff;
                 }
             }
@@ -402,7 +307,6 @@ unsigned int GetNextWorkRequired(const CBlockIndex* pindexLast, const CBlockHead
         bnTot += bnTmp;
         pindexFirst = pindexFirst->pprev;
     }
-    //fprintf(stderr,"diffs %d\n",height);
     // Check we have enough blocks
     if (pindexFirst == NULL)
         return nProofOfWorkLimit;
@@ -499,21 +403,9 @@ unsigned int GetNextWorkRequired(const CBlockIndex* pindexLast, const CBlockHead
                 if ( bnTarget < origtarget || bnTarget > easy )
                 {
                     bnTarget = easy;
-                    fprintf(stderr,"cmp.%d mult.%d ht.%d -> easy target\n",mult>1,(int32_t)mult,height);
+                    LogPrint("pow","cmp.%d mult.%d ht.%d -> easy target\n",mult>1,(int32_t)mult,height);
                     return(HUSH_MINDIFF_NBITS & (~3));
                 }
-                {
-                    int32_t z;
-                    for (z=31; z>=0; z--)
-                        fprintf(stderr,"%02x",((uint8_t *)&bnTarget)[z]);
-                }
-                fprintf(stderr," exp() to the rescue cmp.%d mult.%d for ht.%d\n",mult>1,(int32_t)mult,height);
-            }
-            if ( 0 && zflags[0] == 0 && zawyflag == 0 && mult <= 1 )
-            {
-                bnTarget = zawy_TSA_EMA(height,tipdiff,(bnTarget+ct[0]+ct[1])/arith_uint256(3),ts[0] - ts[1]);
-                if ( bnTarget < origtarget )
-                    zawyflag = 3;
             }
         }
         nbits = bnTarget.GetCompact();
@@ -527,7 +419,10 @@ unsigned int GetNextWorkRequired(const CBlockIndex* pindexLast, const CBlockHead
 
 // Changing this requires changing many other things and
 // might change consensus. Have fun -- Duke
-// NOTE: Ony HUSH3 mainnet should use this function, all HAC's should use params.AveragigWindowTimespan()
+// NOTE: This hardcoded AWT is legacy from the original HUSH3 mainnet. On DragonX the
+// CalculateNextWorkRequired strncmp(SMART_CHAIN_SYMBOL,"HUSH3",...) check is never true
+// (SMART_CHAIN_SYMBOL is "DRAGONX"), so this function is dead here and the params-derived
+// AveragingWindowTimespan() is used instead. Kept as-is to avoid a consensus change.
 int64_t AveragingWindowTimespan() {
     // used in const methods, beware!
     // This is the correct AWT for 75s blocktime, before block 340k
@@ -545,8 +440,11 @@ unsigned int CalculateNextWorkRequired(arith_uint256 bnAvg,
     int64_t nActualTimespan = nLastBlockTime - nFirstBlockTime;
     LogPrint("pow", "  nActualTimespan = %d  before dampening\n", nActualTimespan);
 
+    // Legacy branch: the original HUSH3 mainnet used the hardcoded AveragingWindowTimespan()
+    // above; every other chain uses the params-derived value. On DragonX the symbol is
+    // "DRAGONX", so this comparison is always false and the params value is used. The check is
+    // kept (rather than removed) because it is part of consensus difficulty calculation.
     bool ishush3 = strncmp(SMART_CHAIN_SYMBOL, "HUSH3",5) == 0 ? true : false;
-    // If this is HUSH3, use AWT function defined above, else use the one in params
     int64_t AWT = ishush3 ? AveragingWindowTimespan() : params.AveragingWindowTimespan();
 
     nActualTimespan = AWT + (nActualTimespan - AWT)/4;
@@ -568,10 +466,7 @@ unsigned int CalculateNextWorkRequired(arith_uint256 bnAvg,
     }
     // Retarget
     arith_uint256 bnLimit;
-    if (ASSETCHAINS_ALGO == ASSETCHAINS_EQUIHASH)
-        bnLimit = UintToArith256(params.powLimit);
-    else
-        bnLimit = UintToArith256(params.powAlternate);
+    bnLimit = PowLimitForAlgo(params);
 
     const arith_uint256 bnPowLimit = bnLimit; //UintToArith256(params.powLimit);
     arith_uint256 bnNew {bnAvg};
@@ -594,8 +489,9 @@ unsigned int CalculateNextWorkRequired(arith_uint256 bnAvg,
     return bnNew.GetCompact();
 }
 
-// HUSH does not use these functions but Hush Arrakis Chains can opt-in to using more bleeding edge DAA's
-// ASIC chains do not need these protections as much -- Duke Leto
+// These LWMA difficulty functions are inherited from the Hush lineage and are only used when
+// ASSETCHAINS_ALGO is neither Equihash nor RandomX (see the dispatch in GetNextWorkRequired).
+// DragonX uses RandomX, so this LWMA path is not on DragonX's active difficulty codepath.
 unsigned int lwmaGetNextWorkRequired(const CBlockIndex* pindexLast, const CBlockHeader *pblock, const Consensus::Params& params)
 {
     return lwmaCalculateNextWorkRequired(pindexLast, params);
@@ -604,14 +500,10 @@ unsigned int lwmaGetNextWorkRequired(const CBlockIndex* pindexLast, const CBlock
 unsigned int lwmaCalculateNextWorkRequired(const CBlockIndex* pindexLast, const Consensus::Params& params)
 {
     arith_uint256 nextTarget {0}, sumTarget {0}, bnTmp, bnLimit;
-    if (ASSETCHAINS_ALGO == ASSETCHAINS_EQUIHASH)
-        bnLimit = UintToArith256(params.powLimit);
-    else
-        bnLimit = UintToArith256(params.powAlternate);
+    bnLimit = PowLimitForAlgo(params);
 
     unsigned int nProofOfWorkLimit = bnLimit.GetCompact();
 
-    //printf("PoWLimit: %u\n", nProofOfWorkLimit);
     // Find the first block in the averaging interval as we total the linearly weighted average
     const CBlockIndex* pindexFirst = pindexLast;
     const CBlockIndex* pindexNext;
@@ -872,14 +764,6 @@ bool CheckRandomXSolution(const CBlockHeader *pblock, int32_t height)
             snprintf(buf, sizeof(buf), "%02x", pblock->nSolution[i]);
             solutionHex += buf;
         }
-        fprintf(stderr, "CheckRandomXSolution(): HASH MISMATCH at height %d\n", height);
-        fprintf(stderr, "  computed : %s\n", computedHex.c_str());
-        fprintf(stderr, "  nSolution: %s\n", solutionHex.c_str());
-        fprintf(stderr, "  rxKey size=%lu, input size=%lu, nNonce=%s\n",
-                rxKey.size(), ssInput.size(), pblock->nNonce.ToString().c_str());
-        fprintf(stderr, "  nSolution.size()=%lu, RANDOMX_HASH_SIZE=%d\n",
-                pblock->nSolution.size(), RANDOMX_HASH_SIZE);
-        // Also log to debug.log
         LogPrintf("CheckRandomXSolution(): HASH MISMATCH at height %d\n", height);
         LogPrintf("  computed : %s\n", computedHex);
         LogPrintf("  nSolution: %s\n", solutionHex);

src/rpc/client.cpp

@@ -42,6 +42,8 @@ static const CRPCConvertParam vRPCConvertParams[] =
     { "getaddednodeinfo", 0 },
     { "setgenerate", 0 },
     { "setgenerate", 1 },
+    { "stratummine", 1 }, // port
+    { "stratummine", 3 }, // timeout
     { "generate", 0 },
     { "getnetworkhashps", 0 },
     { "getnetworkhashps", 1 },
@@ -50,8 +52,6 @@ static const CRPCConvertParam vRPCConvertParams[] =
     { "sendtoaddress", 1 },
     { "sendtoaddress", 4 },
     { "settxfee", 0 },
-    { "getnotarysendmany", 0 },
-    { "getnotarysendmany", 1 },
     { "getreceivedbyaddress", 1 },
     { "getreceivedbyaccount", 1 },
     { "listreceivedbyaddress", 0 },
@@ -171,7 +171,6 @@ static const CRPCConvertParam vRPCConvertParams[] =
 
     // crosschain
     { "assetchainproof", 1},
-    { "crosschainproof", 1},
     { "getproofroot", 2},
     { "getNotarizationsForBlock", 0},
     { "height_MoM", 1},

src/rpc/crosschain.cpp

@@ -78,14 +78,6 @@ UniValue assetchainproof(const UniValue& params, bool fHelp, const CPubKey& mypk
 }
 
 
-UniValue crosschainproof(const UniValue& params, bool fHelp, const CPubKey& mypk)
-{
-    UniValue ret(UniValue::VOBJ);
-    //fprintf(stderr,"crosschainproof needs to be implemented\n");
-    return(ret);
-}
-
-
 UniValue height_MoM(const UniValue& params, bool fHelp, const CPubKey& mypk)
 {
     int32_t height,depth,notarized_height,MoMoMdepth,MoMoMoffset,hushstarti,hushendi; uint256 MoM,MoMoM,hushtxid; uint32_t timestamp = 0; UniValue ret(UniValue::VOBJ); UniValue a(UniValue::VARR);

src/rpc/mining.cpp

@@ -45,6 +45,21 @@
 
 #include <univalue.h>
 
+#include "compat/byteswap.h" // bswap_32 for the stratum wire fields (version/time/bits)
+#ifndef WIN32
+// stratummine (below) is a POSIX-only reference RandomX stratum miner used to exercise the pool
+// path end-to-end. It reuses DragonX's own RandomX + GetRandomXInput so its hash is byte-identical
+// to CheckRandomXSolution. Not built on Windows (raw POSIX sockets).
+#include "RandomX/src/randomx.h"
+#include <sys/select.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <unistd.h>
+#endif
+
 using namespace std;
 
 #include "hush_defs.h"
@@ -363,7 +378,7 @@ UniValue setgenerate(const UniValue& params, bool fHelp, const CPubKey& mypk)
     }
 
     HUSH_MININGTHREADS = (int32_t)nGenProcLimit;
-	fprintf(stderr,"%s:HUSH_MININGTHREADS=%d\n", __FUNCTION__, HUSH_MININGTHREADS);
+	LogPrint("mining","%s:HUSH_MININGTHREADS=%d\n", __FUNCTION__, HUSH_MININGTHREADS);
 
     mapArgs["-gen"]           = (fGenerate ? "1" : "0");
     mapArgs ["-genproclimit"] = itostr(HUSH_MININGTHREADS);
@@ -460,15 +475,8 @@ UniValue getmininginfo(const UniValue& params, bool fHelp, const CPubKey& mypk)
     obj.push_back(Pair("difficulty",       (double)GetNetworkDifficulty()));
     obj.push_back(Pair("errors",           GetWarnings("statusbar")));
     obj.push_back(Pair("genproclimit",     (int)GetArg("-genproclimit", -1)));
-    if (ASSETCHAINS_ALGO == ASSETCHAINS_EQUIHASH)
-    {
-        obj.push_back(Pair("localsolps"  , getlocalsolps(params, false, mypk)));
-        obj.push_back(Pair("networksolps", getnetworksolps(params, false, mypk)));
-    }
-    else
-    {
+    // DragonX is RandomX-only; the Equihash sol/s reporting path was removed.
     obj.push_back(Pair("localhashps"  , GetBoolArg("-gen", false) ? getlocalsolps(params, false, mypk) : (double)0.0));
-    }
     obj.push_back(Pair("networkhashps",    getnetworksolps(params, false, mypk)));
     obj.push_back(Pair("pooledtx",         (uint64_t)mempool.size()));
     obj.push_back(Pair("testnet",          Params().TestnetToBeDeprecatedFieldRPC()));
@@ -854,7 +862,6 @@ UniValue getblocktemplate(const UniValue& params, bool fHelp, const CPubKey& myp
     result.push_back(Pair("bits", strprintf("%08x", pblock->nBits)));
     result.push_back(Pair("height", (int64_t)(pindexPrev->GetHeight()+1)));
 
-    //fprintf(stderr,"return complete template\n");
     return result;
 }
 
@@ -905,7 +912,6 @@ UniValue submitblock(const UniValue& params, bool fHelp, const CPubKey& mypk)
         );
 
     CBlock block;
-    //LogPrintStr("Hex block submission: " + params[0].get_str());
     if (!DecodeHexBlk(block, params[0].get_str()))
         throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "Block decode failed");
 
@@ -931,7 +937,6 @@ UniValue submitblock(const UniValue& params, bool fHelp, const CPubKey& mypk)
     CValidationState state;
     submitblock_StateCatcher sc(block.GetHash());
     RegisterValidationInterface(&sc);
-    //printf("submitblock, height=%d, coinbase sequence: %d, scriptSig: %s\n", chainActive.LastTip()->GetHeight()+1, block.vtx[0].vin[0].nSequence, block.vtx[0].vin[0].scriptSig.ToString().c_str());
     bool fAccepted = ProcessNewBlock(1,chainActive.LastTip()->GetHeight()+1,state, NULL, &block, true, NULL);
     UnregisterValidationInterface(&sc);
     if (fBlockPresent)
@@ -1063,9 +1068,242 @@ UniValue getblocksubsidy(const UniValue& params, bool fHelp, const CPubKey& mypk
 }
 
 
+#ifndef WIN32
+extern uint32_t ASSETCHAINS_ALGO, ASSETCHAINS_RANDOMX; // hush_defs.h — active PoW algorithm
+
+// Send one newline-terminated JSON line on a blocking socket.
+static bool StratumMinerSend(int fd, const std::string& s)
+{
+    std::string line = s;
+    if (line.empty() || line.back() != '\n') line += '\n';
+    size_t off = 0;
+    while (off < line.size()) {
+        ssize_t n = send(fd, line.data() + off, line.size() - off, 0);
+        if (n <= 0) return false;
+        off += (size_t)n;
+    }
+    return true;
+}
+
+// Wait up to timeout_ms for data, then split all completed lines out of buf into out.
+// Returns false only on socket error/close (a timeout with no data is success with out empty).
+static bool StratumMinerRecvLines(int fd, std::string& buf, int timeout_ms, std::vector<std::string>& out)
+{
+    fd_set rfds; FD_ZERO(&rfds); FD_SET(fd, &rfds);
+    struct timeval tv; tv.tv_sec = timeout_ms / 1000; tv.tv_usec = (timeout_ms % 1000) * 1000;
+    int r = select(fd + 1, &rfds, NULL, NULL, &tv);
+    if (r < 0) return false;
+    if (r == 0) return true;
+    char tmp[8192];
+    ssize_t n = recv(fd, tmp, sizeof(tmp), 0);
+    if (n <= 0) return false;
+    buf.append(tmp, tmp + n);
+    size_t pos;
+    while ((pos = buf.find('\n')) != std::string::npos) {
+        std::string line = buf.substr(0, pos);
+        buf.erase(0, pos + 1);
+        if (!line.empty() && line.back() == '\r') line.pop_back();
+        if (!line.empty()) out.push_back(line);
+    }
+    return true;
+}
+
+// Reference RandomX stratum miner (test utility): connect to a DragonX stratum server, subscribe +
+// authorize, receive work + the per-height RandomX key, then vary the block nNonce, hash with
+// RandomX (byte-identical to CheckRandomXSolution via GetRandomXInput), and submit a 32-byte
+// solution when the block hash meets target. Exists to validate the -stratum RandomX pool path.
+UniValue stratummine(const UniValue& params, bool fHelp, const CPubKey& mypk)
+{
+    if (fHelp || params.size() < 2 || params.size() > 4)
+        throw runtime_error(
+            "stratummine \"host\" port ( \"address\" timeout )\n"
+            "\nReference RandomX stratum miner: connect to a DragonX stratum server, solve RandomX,\n"
+            "and submit until one share/block is accepted or the timeout elapses. For testing -stratum.\n"
+            "\nArguments:\n"
+            "1. \"host\"    (string, required) stratum server host or IP\n"
+            "2. port      (numeric, required) stratum server port\n"
+            "3. \"address\" (string, optional, default=\"x\") payout R-address, or \"x\" for the server default\n"
+            "4. timeout   (numeric, optional, default=120) seconds to mine before giving up\n"
+            "\nResult: {\"found\":bool,\"accepted\":bool,\"hash\":\"..\",\"hashes\":n,\"seconds\":n}\n");
+
+    if (ASSETCHAINS_ALGO != ASSETCHAINS_RANDOMX)
+        throw JSONRPCError(RPC_MISC_ERROR, "stratummine only supports RandomX chains");
+
+    const std::string host = params[0].get_str();
+    const int port = params[1].get_int();
+    const std::string addr = params.size() > 2 ? params[2].get_str() : "x";
+    const int64_t timeout = params.size() > 3 ? params[3].get_int64() : 120;
+    const int64_t deadline = GetTime() + timeout;
+
+    // connect (blocking TCP)
+    struct addrinfo hints; memset(&hints, 0, sizeof(hints));
+    hints.ai_family = AF_UNSPEC; hints.ai_socktype = SOCK_STREAM;
+    struct addrinfo* ai = NULL;
+    if (getaddrinfo(host.c_str(), strprintf("%d", port).c_str(), &hints, &ai) != 0 || !ai)
+        throw JSONRPCError(RPC_CLIENT_NOT_CONNECTED, strprintf("cannot resolve %s:%d", host, port));
+    int fd = -1;
+    for (struct addrinfo* p = ai; p; p = p->ai_next) {
+        fd = socket(p->ai_family, p->ai_socktype, p->ai_protocol);
+        if (fd < 0) continue;
+        if (connect(fd, p->ai_addr, p->ai_addrlen) == 0) break;
+        close(fd); fd = -1;
+    }
+    freeaddrinfo(ai);
+    if (fd < 0)
+        throw JSONRPCError(RPC_CLIENT_NOT_CONNECTED, strprintf("cannot connect to %s:%d", host, port));
+    { int one = 1; setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char*)&one, sizeof(one)); }
+
+    StratumMinerSend(fd, "{\"id\":1,\"method\":\"mining.subscribe\",\"params\":[\"dragonx-refminer/1.0\"]}");
+    StratumMinerSend(fd, strprintf("{\"id\":2,\"method\":\"mining.authorize\",\"params\":[\"%s\",\"x\"]}", addr));
+
+    // state accumulated from the server
+    std::vector<unsigned char> extranonce1;
+    std::string rxKey;
+    bool haveKey = false, haveTarget = false, haveJob = false;
+    arith_uint256 poolTarget;
+    std::string jobId, timeHex;
+    uint32_t nVersion = 4, nTime = 0, nBits = 0;
+    uint256 hashPrevBlock, hashMerkleRoot, hashReserved;
+
+    auto processLine = [&](const std::string& line) {
+        UniValue v;
+        if (!v.read(line)) return;
+        const UniValue& id = find_value(v, "id");
+        const UniValue& result = find_value(v, "result");
+        if (id.isNum() && id.get_int() == 1 && result.isArray() && result.size() >= 2 && result[1].isStr())
+            extranonce1 = ParseHex(result[1].get_str());
+        const UniValue& method = find_value(v, "method");
+        if (!method.isStr()) return;
+        const UniValue& p = find_value(v, "params");
+        if (!p.isArray()) return;
+        const std::string m = method.get_str();
+        if (m == "mining.set_randomx_key" && p.size() >= 1) {
+            std::vector<unsigned char> kb = ParseHex(p[0].get_str());
+            rxKey.assign(kb.begin(), kb.end());
+            haveKey = true;
+        } else if (m == "mining.set_target" && p.size() >= 1) {
+            poolTarget = UintToArith256(uint256S(p[0].get_str()));
+            haveTarget = true;
+        } else if (m == "mining.notify" && p.size() >= 7) {
+            jobId          = p[0].get_str();
+            nVersion       = bswap_32((uint32_t)strtoul(p[1].get_str().c_str(), NULL, 16));
+            hashPrevBlock  = uint256(ParseHex(p[2].get_str()));
+            hashMerkleRoot = uint256(ParseHex(p[3].get_str()));
+            hashReserved   = uint256(ParseHex(p[4].get_str()));
+            timeHex        = p[5].get_str();
+            nTime          = bswap_32((uint32_t)strtoul(timeHex.c_str(), NULL, 16));
+            nBits          = bswap_32((uint32_t)strtoul(p[6].get_str().c_str(), NULL, 16));
+            haveJob = true;
+        }
+    };
+
+    std::string buf;
+    for (int i = 0; i < 120 && !(haveJob && haveTarget && haveKey && !extranonce1.empty()); i++) {
+        std::vector<std::string> lines;
+        if (!StratumMinerRecvLines(fd, buf, 250, lines)) { close(fd); throw JSONRPCError(RPC_CLIENT_NOT_CONNECTED, "stratum connection closed during handshake"); }
+        for (const std::string& l : lines) processLine(l);
+        if (GetTime() > deadline) break;
+    }
+    if (!(haveJob && haveTarget && haveKey && !extranonce1.empty())) {
+        close(fd);
+        throw JSONRPCError(RPC_MISC_ERROR, "did not receive complete RandomX work (need job + target + randomx key + extranonce)");
+    }
+
+    randomx_flags flags = randomx_get_flags();
+    randomx_cache* cache = randomx_alloc_cache(flags);
+    if (!cache) { close(fd); throw JSONRPCError(RPC_MISC_ERROR, "randomx_alloc_cache failed"); }
+    randomx_init_cache(cache, rxKey.data(), rxKey.size());
+    std::string vmKey = rxKey;
+    randomx_vm* vm = randomx_create_vm(flags, cache, NULL);
+    if (!vm) { randomx_release_cache(cache); close(fd); throw JSONRPCError(RPC_MISC_ERROR, "randomx_create_vm failed"); }
+
+    UniValue res(UniValue::VOBJ);
+    bool found = false, accepted = false, submitted = false;
+    uint64_t hashes = 0, en2ctr = 0;
+    std::string foundHash;
+    const int64_t started = GetTime();
+
+    while (GetTime() <= deadline && !found) {
+        std::string prevJob = jobId;
+        std::vector<std::string> lines;
+        if (!StratumMinerRecvLines(fd, buf, 0, lines)) break;
+        for (const std::string& l : lines) processLine(l);
+        if (jobId != prevJob) en2ctr = 0; // new tip -> restart the nonce search
+        if (rxKey != vmKey) { randomx_init_cache(cache, rxKey.data(), rxKey.size()); randomx_vm_set_cache(vm, cache); vmKey = rxKey; }
+
+        arith_uint256 blockTarget; bool fNeg, fOver;
+        blockTarget.SetCompact(nBits, &fNeg, &fOver);
+        // Mine to the harder of (block target, pool share target) so a solution is a real block AND
+        // passes the server's low-diff share check.
+        arith_uint256 tgt = (haveTarget && poolTarget < blockTarget) ? poolTarget : blockTarget;
+
+        CBlockHeader hdr;
+        hdr.nVersion = nVersion;
+        hdr.hashPrevBlock = hashPrevBlock;
+        hdr.hashMerkleRoot = hashMerkleRoot;
+        hdr.hashFinalSaplingRoot = hashReserved;
+        hdr.nTime = nTime;
+        hdr.nBits = nBits;
+
+        for (int i = 0; i < 2000 && GetTime() <= deadline; i++) {
+            std::vector<unsigned char> nonce = extranonce1;
+            nonce.resize(32, 0);
+            for (int b = 0; b < 8; b++) nonce[8 + b] = (unsigned char)((en2ctr >> (8 * b)) & 0xff);
+            en2ctr++; hashes++;
+            hdr.nNonce = uint256(nonce);
+            std::vector<unsigned char> input = GetRandomXInput(hdr);
+            unsigned char h[RANDOMX_HASH_SIZE];
+            randomx_calculate_hash(vm, input.data(), input.size(), h);
+            hdr.nSolution.assign(h, h + RANDOMX_HASH_SIZE);
+            if (UintToArith256(hdr.GetHash()) <= tgt) {
+                std::vector<unsigned char> en2(nonce.begin() + 8, nonce.end());
+                std::string submit = strprintf(
+                    "{\"id\":4,\"method\":\"mining.submit\",\"params\":[\"%s\",\"%s\",\"%s\",\"%s\",\"%s\"]}",
+                    addr, jobId, timeHex, HexStr(en2), HexStr(hdr.nSolution));
+                StratumMinerSend(fd, submit);
+                submitted = true;
+                foundHash = hdr.GetHash().ToString();
+                bool sawResult = false;
+                for (int k = 0; k < 40 && !sawResult; k++) {
+                    std::vector<std::string> rl;
+                    if (!StratumMinerRecvLines(fd, buf, 250, rl)) break;
+                    for (const std::string& l : rl) {
+                        processLine(l);
+                        UniValue rv; if (!rv.read(l)) continue;
+                        const UniValue& rid = find_value(rv, "id");
+                        if (rid.isNum() && rid.get_int() == 4) {
+                            sawResult = true;
+                            const UniValue& r = find_value(rv, "result");
+                            accepted = r.isBool() ? r.get_bool() : find_value(rv, "error").isNull();
+                        }
+                    }
+                }
+                found = true;
+                break;
+            }
+        }
+    }
+
+    randomx_destroy_vm(vm);
+    randomx_release_cache(cache);
+    close(fd);
+
+    res.push_back(Pair("found", found));
+    res.push_back(Pair("submitted", submitted));
+    res.push_back(Pair("accepted", accepted));
+    res.push_back(Pair("hashes", (uint64_t)hashes));
+    res.push_back(Pair("seconds", (int64_t)(GetTime() - started)));
+    if (!foundHash.empty()) res.push_back(Pair("hash", foundHash));
+    return res;
+}
+#endif // !WIN32
+
 static const CRPCCommand commands[] =
 { //  category              name                      actor (function)         okSafeMode
   //  --------------------- ------------------------  -----------------------  ----------
+#ifndef WIN32
+    { "mining",             "stratummine",            &stratummine,            true  },
+#endif
     { "mining",             "getlocalsolps",          &getlocalsolps,          true  },
     { "mining",             "getnetworksolps",        &getnetworksolps,        true  },
     { "mining",             "getnetworkhashps",       &getnetworkhashps,       true  },

src/rpc/misc.cpp

@@ -78,106 +78,6 @@ extern int32_t ASSETCHAINS_SAPLING;
 extern uint64_t ASSETCHAINS_ENDSUBSIDY[],ASSETCHAINS_REWARD[],ASSETCHAINS_HALVING[],ASSETCHAINS_DECAY[],ASSETCHAINS_NOTARY_PAY[];
 extern std::string NOTARY_PUBKEY,NOTARY_ADDRESS; extern uint8_t NOTARY_PUBKEY33[];
 
-//TODO: use non-staked eras
-// Currently HUSH only uses block heights to define eras
-int32_t getera(int timestamp)
-{
-    return(0);
-}
-
-UniValue getdragonjson(const UniValue& params, bool fHelp, const CPubKey& mypk)
-{
-    if (fHelp || params.size() != 0)
-      throw runtime_error("getdragonjson\nreturns json for dragon, for the current ERA.");
-
-    UniValue json(UniValue::VOBJ);
-    UniValue seeds(UniValue::VARR);
-    UniValue notaries(UniValue::VARR);
-    // get the current era, use local time for now.
-    // should ideally take blocktime of last known block?
-    int now = time(NULL);
-    int32_t era = getera(now);
-
-    // loop over seeds array and push back to json array for seeds
-    for (int8_t i = 0; i < 8; i++) {
-        //seeds.push_back(dragonSeeds[i][0]);
-    }
-
-    // get all current notaries
-    for (int8_t i = 0; i < NUM_HUSH_NOTARIES; i++) {
-        UniValue notary(UniValue::VOBJ);
-        notary.push_back(notaries_list[era][i][0]);
-        notaries.push_back(notary);
-    }
-
-    // TODO: should be a config param
-    int minsigs = 13;
-    int BTCminsigs = 13;
-
-    int dragonPort = 5555;
-    json.push_back(Pair("port",dragonPort));
-    json.push_back(Pair("BTCminsigs",BTCminsigs));
-    json.push_back(Pair("minsigs",minsigs));
-    json.push_back(Pair("seeds",seeds));
-    json.push_back(Pair("notaries",notaries));
-    return json;
-}
-
-UniValue getnotarysendmany(const UniValue& params, bool fHelp, const CPubKey& mypk)
-{
-    if (fHelp || params.size() > 1)
-      throw runtime_error(
-          "getnotarysendmany\n"
-          "Returns a sendmany JSON array with all current notaries Raddress's.\n"
-          "\nExamples:\n"
-          + HelpExampleCli("getnotarysendmany", "10")
-          + HelpExampleRpc("getnotarysendmany", "10")
-      );
-    int amount = 0;
-    if ( params.size() == 1 ) {
-        amount = params[0].get_int();
-    }
-
-    //TODO: this is broke
-    int era = getera(time(NULL));
-
-    UniValue ret(UniValue::VOBJ);
-    for (int i = 0; i<NUM_HUSH_NOTARIES; i++)
-    {
-        char Raddress[18]; uint8_t pubkey33[33];
-        decode_hex(pubkey33,33,(char *)notaries_list[era][i][1]);
-        pubkey2addr((char *)Raddress,(uint8_t *)pubkey33);
-        ret.push_back(Pair(Raddress,amount));
-    }
-    return ret;
-}
-
-UniValue geterablockheights(const UniValue& params, bool fHelp, const CPubKey& mypk)
-{
-    if (fHelp || params.size() != 0)
-      throw runtime_error(
-          "geterablockheights\n"
-          "Returns a JSON object with the first block in each era.\n"
-          );
-      
-    CBlockIndex *pindex; int8_t lastera,era = 0; UniValue ret(UniValue::VOBJ);
-
-    for (size_t i = 1; i < chainActive.LastTip()->GetHeight(); i++)
-    {
-        pindex = chainActive[i];
-        era = getera(pindex->nTime)+1;
-        if ( era > lastera )
-        {
-            char str[16];
-            sprintf(str, "%d", era);
-            ret.push_back(Pair(str,(int64_t)i));
-            lastera = era;
-        }
-    }
-    
-    return(ret);
-}
-
 extern int getWorkQueueDepth();
 extern int getWorkQueueMaxDepth();
 extern int getWorkQueueNumThreads();
@@ -202,7 +102,7 @@ UniValue rpcinfo(const UniValue& params, bool fHelp, const CPubKey& mypk)
 
 UniValue getinfo(const UniValue& params, bool fHelp, const CPubKey& mypk)
 {
-    uint256 notarized_hash,notarized_desttxid; int32_t prevMoMheight,notarized_height,longestchain,hushnotarized_height,txid_height;
+    int32_t longestchain;
     if (fHelp || params.size() != 0)
         throw runtime_error(
             "getinfo\n"
@@ -240,28 +140,13 @@ UniValue getinfo(const UniValue& params, bool fHelp, const CPubKey& mypk)
     
     proxyType proxy;
     GetProxy(NET_IPV4, proxy);
-    notarized_height = hush_notarized_height(&prevMoMheight,&notarized_hash,&notarized_desttxid);
-    //fprintf(stderr,"after notarized_height %u\n",(uint32_t)time(NULL));
     
     UniValue obj(UniValue::VOBJ);
     obj.push_back(Pair("version", CLIENT_VERSION));
     obj.push_back(Pair("protocolversion", PROTOCOL_VERSION));
     obj.push_back(Pair("synced", HUSH_INSYNC!=0));
-    obj.push_back(Pair("notarized", notarized_height));
-    obj.push_back(Pair("prevMoMheight", prevMoMheight));
-    obj.push_back(Pair("notarizedhash", notarized_hash.ToString()));
-    obj.push_back(Pair("notarizedtxid", notarized_desttxid.ToString()));
     if ( HUSH_NSPV_FULLNODE )
     {
-        txid_height = notarizedtxid_height( (char *)"HUSH3" ,(char *)notarized_desttxid.ToString().c_str(),&hushnotarized_height);
-        if ( txid_height > 0 )
-            obj.push_back(Pair("notarizedtxid_height", txid_height));
-        else obj.push_back(Pair("notarizedtxid_height", "mempool"));
-        if ( SMART_CHAIN_SYMBOL[0] != 0 ) {
-            obj.push_back(Pair("HUSHnotarized_height", hushnotarized_height));
-        }
-        obj.push_back(Pair("notarized_confirms", txid_height < hushnotarized_height ? (hushnotarized_height - txid_height + 1) : 0));
-        //fprintf(stderr,"after notarized_confirms %u\n",(uint32_t)time(NULL));
 #ifdef ENABLE_WALLET
         if (pwalletMain) {
             obj.push_back(Pair("walletversion", pwalletMain->GetVersion()));
@@ -348,15 +233,9 @@ UniValue getinfo(const UniValue& params, bool fHelp, const CPubKey& mypk)
 
         if ( ASSETCHAINS_COMMISSION != 0 )
             obj.push_back(Pair("commission",        ASSETCHAINS_COMMISSION));
-        if ( ASSETCHAINS_ALGO == ASSETCHAINS_EQUIHASH ) {
-            uint64_t N = ASSETCHAINS_NK[0] ? ASSETCHAINS_NK[0] : 200;
-            uint64_t K = ASSETCHAINS_NK[1] ? ASSETCHAINS_NK[1] : 9;
-            std::string equihash_algo = "equihash (" + std::to_string(N) + "," + std::to_string(K) + ")";
-            obj.push_back(Pair("algo",equihash_algo));
-	    } else {
+        // DragonX is RandomX-only; the Equihash (N,K) reporting path was removed.
         obj.push_back(Pair("algo", ASSETCHAINS_ALGORITHMS[ASSETCHAINS_ALGO]));
     }
-    }
     return obj;
 }
 

src/rpc/net.cpp

@@ -218,7 +218,7 @@ int32_t HUSH_LONGESTCHAIN;
 static int32_t hush_longest_depth = 0;
 int32_t hush_longestchain()
 {
-    int32_t ht,n=0,num=0,maxheight=0,height = 0;
+    int32_t ht,num=0,maxheight=0,height = 0;
     if ( hush_longest_depth < 0 )
         hush_longest_depth = 0;
     if ( hush_longest_depth == 0 )
@@ -231,7 +231,6 @@ int32_t hush_longestchain()
         }
         BOOST_FOREACH(const CNodeStats& stats, vstats)
         {
-            //fprintf(stderr,"hush_longestchain iter.%d\n",n);
             CNodeStateStats statestats;
             bool fStateStats = GetNodeStateStats(stats.nodeid,statestats);
             if ( statestats.nSyncHeight < 0 )
@@ -251,10 +250,8 @@ int32_t hush_longestchain()
                 height = ht;
         }
         hush_longest_depth--;
-        if ( num > (n >> 1) )
+        if ( num > 0 )
         {
-            if ( 0 && height != HUSH_LONGESTCHAIN )
-                fprintf(stderr,"set %s HUSH_LONGESTCHAIN <- %d\n",SMART_CHAIN_SYMBOL,height);
             HUSH_LONGESTCHAIN = height;
             return(height);
         }

src/rpc/rawtransaction.cpp

@@ -1168,7 +1168,7 @@ UniValue signrawtransaction(const UniValue& params, bool fHelp, const CPubKey& m
         numiters++;
     }
     if ( numiters > 0 )
-        fprintf(stderr,"ASSETCHAINS_TXPOW.%d txpow.%d numiters.%d for signature\n",ASSETCHAINS_TXPOW,txpow,numiters);
+        LogPrintf("ASSETCHAINS_TXPOW.%d txpow.%d numiters.%d for signature\n",ASSETCHAINS_TXPOW,txpow,numiters);
     bool fComplete = vErrors.empty();
 
     UniValue result(UniValue::VOBJ);

src/rpc/server.cpp

@@ -276,11 +276,7 @@ UniValue stop(const UniValue& params, bool fHelp, const CPubKey& mypk)
     // Shutdown will take long enough that the response should get back
     StartShutdown();
 
-    if ((strncmp(SMART_CHAIN_SYMBOL, "HUSH3", 5) == 0) ) {
-        sprintf(buf,"Hush server stopping, for now...");
-	} else {
     sprintf(buf,"%s server stopping...",SMART_CHAIN_SYMBOL);
-	}
     return buf;
 }
 
@@ -292,9 +288,6 @@ static const CRPCCommand vRPCCommands[] =
   //  --------------------- ------------------------  -----------------------  ----------
     /* Overall control/query calls */
     { "control",            "help",                   &help,                   true  },
-    { "control",            "getdragonjson",          &getdragonjson,          true  },
-    { "control",            "getnotarysendmany",      &getnotarysendmany,      true  },
-    { "control",            "geterablockheights",     &geterablockheights,     true  },
     { "control",            "stop",                   &stop,                   true  },
 
     /* P2P networking */
@@ -342,7 +335,6 @@ static const CRPCCommand vRPCCommands[] =
     { "crosschain",         "calc_MoM",               &calc_MoM,               true  },
     { "crosschain",         "height_MoM",             &height_MoM,             true  },
     { "crosschain",         "assetchainproof",        &assetchainproof,        true  },
-    { "crosschain",         "crosschainproof",        &crosschainproof,        true  },
     { "crosschain",         "getNotarizationsForBlock", &getNotarizationsForBlock, true },
     { "crosschain",         "scanNotarizationsDB",    &scanNotarizationsDB,    true },
 
@@ -666,7 +658,6 @@ UniValue CRPCTable::execute(const std::string &strMethod, const UniValue &params
             // while a very long wallet rescan is happening and do other read-only devopz
             if (pcmd->name != "stop" && pcmd->name != "help" && pcmd->name != "z_listaddresses" && pcmd->name != "z_exportkey" &&
                 pcmd->name != "getNotarizationsForBlock" && pcmd->name != "scanNotarizationsDB" &&
-                pcmd->name != "getnotarysendmany" && pcmd->name != "geterablockheights" &&
                 pcmd->name != "getaddressesbyaccount" && pcmd->name != "listaddresses" && pcmd->name != "z_exportwallet" &&
                 pcmd->name != "notaries" && pcmd->name != "signmessage" && pcmd->name != "decoderawtransaction" &&
                 pcmd->name != "dumpprivkey" && pcmd->name != "getpeerinfo" && pcmd->name != "getnetworkinfo" &&
@@ -695,11 +686,7 @@ UniValue CRPCTable::execute(const std::string &strMethod, const UniValue &params
 
 std::string HelpExampleCli(const std::string& methodname, const std::string& args)
 {
-    if ((strncmp(SMART_CHAIN_SYMBOL, "HUSH3", 5) == 0) ) {
-        return "> hush-cli " + methodname + " " + args + "\n";
-    } else {
-        return "> hush-cli -ac_name=" + strprintf("%s", SMART_CHAIN_SYMBOL) + " " + methodname + " " + args + "\n";
-    }
+    return "> dragonx-cli " + methodname + " " + args + "\n";
 }
 
 std::string HelpExampleRpc(const std::string& methodname, const std::string& args)

src/rpc/server.h

@@ -280,9 +280,6 @@ extern UniValue encryptwallet(const UniValue& params, bool fHelp, const CPubKey&
 extern UniValue validateaddress(const UniValue& params, bool fHelp, const CPubKey& mypk);
 extern UniValue txnotarizedconfirmed(const UniValue& params, bool fHelp, const CPubKey& mypk);
 extern UniValue getinfo(const UniValue& params, bool fHelp, const CPubKey& mypk);
-extern UniValue getdragonjson(const UniValue& params, bool fHelp, const CPubKey& mypk);
-extern UniValue getnotarysendmany(const UniValue& params, bool fHelp, const CPubKey& mypk);
-extern UniValue geterablockheights(const UniValue& params, bool fHelp, const CPubKey& mypk);
 extern UniValue setpubkey(const UniValue& params, bool fHelp, const CPubKey& mypk);
 extern UniValue getwalletinfo(const UniValue& params, bool fHelp, const CPubKey& mypk);
 extern UniValue getblockchaininfo(const UniValue& params, bool fHelp, const CPubKey& mypk);
@@ -383,7 +380,6 @@ extern UniValue MoMoMdata(const UniValue& params, bool fHelp, const CPubKey& myp
 extern UniValue calc_MoM(const UniValue& params, bool fHelp, const CPubKey& mypk);
 extern UniValue height_MoM(const UniValue& params, bool fHelp, const CPubKey& mypk);
 extern UniValue assetchainproof(const UniValue& params, bool fHelp, const CPubKey& mypk);
-extern UniValue crosschainproof(const UniValue& params, bool fHelp, const CPubKey& mypk);
 extern UniValue getNotarizationsForBlock(const UniValue& params, bool fHelp, const CPubKey& mypk);
 extern UniValue scanNotarizationsDB(const UniValue& params, bool fHelp, const CPubKey& mypk);
 extern UniValue getimports(const UniValue& params, bool fHelp, const CPubKey& mypk);

src/stratum.cpp

@@ -16,6 +16,7 @@
 #include "httpserver.h"
 #include "miner.h"
 #include "netbase.h"
+#include "pow.h" // RandomX PoW: CheckRandomXSolution / GetRandomXKey / GetRandomXInput; and CheckEquihashSolution
 #include "net.h"
 #include "rpc/server.h"
 #include "serialize.h"
@@ -637,9 +638,6 @@ void CustomizeWork(const StratumClient& client, const StratumWork& current_work,
     nonce.insert(nonce.end(), extranonce2.begin(), extranonce2.end());
 
     // nonce = extranonce1 + extranonce2
-    // if (instance_of_cstratumparams.fstdErrDebugOutput) {
-    //     std::cerr << __func__ << ": " << __FILE__ << "," << __LINE__ << " nonce = " << HexStr(nonce) << std::endl;
-    // }
 
     if (cb.vin.empty()) {
         const std::string msg = strprintf("%s: first transaction is missing coinbase input; unable to customize work to miner", __func__);
@@ -666,6 +664,15 @@ void CustomizeWork(const StratumClient& client, const StratumWork& current_work,
     // cb_branch = current_work.m_cb_branch;
 }
 
+// DragonX PoW is RandomX (32-byte solution); Equihash is legacy (1347-byte solution). The stratum
+// work and submit paths branch on this: RandomX hands the miner the per-height RandomX key (which it
+// cannot derive without the chain) and validates a 32-byte solution via CheckRandomXSolution();
+// Equihash keeps the legacy path (1347-byte solution + the 3-byte prefix + CheckEquihashSolution).
+extern uint32_t ASSETCHAINS_ALGO, ASSETCHAINS_RANDOMX; // hush_defs.h — active PoW algorithm selector
+extern int32_t HUSH_TESTNODE; // hush_globals.h — -testnode: relax IBD/sync guards for isolated test nodes
+static inline bool StratumIsRandomX() { return ASSETCHAINS_ALGO == ASSETCHAINS_RANDOMX; }
+static const size_t RX_STRATUM_SOLUTION_SIZE = 32; // == RANDOMX_HASH_SIZE (kept local to avoid pulling randomx.h into stratum)
+
 std::string GetWorkUnit(StratumClient& client)
 {
     // LOCK(cs_main);
@@ -675,7 +682,7 @@ std::string GetWorkUnit(StratumClient& client)
     } */
 
     /* if (!Params().MineBlocksOnDemand() && g_connman->GetNodeCount(CConnman::CONNECTIONS_ALL) == 0) {
-        throw JSONRPCError(RPC_CLIENT_NOT_CONNECTED, "Hush is not connected!");
+        throw JSONRPCError(RPC_CLIENT_NOT_CONNECTED, "DragonX is not connected!");
     } */
 
     bool fvNodesEmpty;
@@ -686,21 +693,21 @@ std::string GetWorkUnit(StratumClient& client)
 
     if (Params().MiningRequiresPeers() && fvNodesEmpty)
     {
-        const std::string msg = strprintf("%s: Unable to get work unit, Hush is not connected!", __func__);
+        const std::string msg = strprintf("%s: Unable to get work unit, DragonX is not connected!", __func__);
         LogPrint("stratum", "%s\n", msg);
-        throw JSONRPCError(RPC_CLIENT_NOT_CONNECTED, "Hush is not connected!");
+        throw JSONRPCError(RPC_CLIENT_NOT_CONNECTED, "DragonX is not connected!");
     }
 
-    if (IsInitialBlockDownload()) {
-        const std::string msg = strprintf("%s: Unable to get work unit, Hush is still downloading blocks!", __func__);
+    if (IsInitialBlockDownload() && HUSH_TESTNODE == 0) {
+        const std::string msg = strprintf("%s: Unable to get work unit, DragonX is still downloading blocks!", __func__);
         LogPrint("stratum", "%s\n", msg);
-        throw JSONRPCError(RPC_CLIENT_IN_INITIAL_DOWNLOAD, "Hush is downloading blocks...");
+        throw JSONRPCError(RPC_CLIENT_IN_INITIAL_DOWNLOAD, "DragonX is downloading blocks...");
     }
 
     if (!client.m_authorized && client.m_aux_addr.empty()) {
         const std::string msg = strprintf("%s: Unable to get work unit, client not authorized! Use address 'x' to mine to the default address", __func__);
         LogPrint("stratum", "%s\n", msg);
-        throw JSONRPCError(RPC_INVALID_REQUEST, "Stratum client not authorized.  Use mining.authorize first, with a Hush R.. address as the username or 'x' to mine to the default address.");
+        throw JSONRPCError(RPC_INVALID_REQUEST, "Stratum client not authorized.  Use mining.authorize first, with a DragonX R.. address as the username or 'x' to mine to the default address.");
     }
 
     static CBlockIndex* tip = NULL; // pindexPrev
@@ -737,18 +744,18 @@ std::string GetWorkUnit(StratumClient& client)
             throw JSONRPCError(RPC_OUT_OF_MEMORY, "Out of memory");
         }
 
-        // if (instance_of_cstratumparams.fstdErrDebugOutput) std::cerr << __func__ << ": " << __FILE__ << "," << __LINE__ << "hashMerkleRoot = " << new_work->block.hashMerkleRoot.ToString() << std::endl;
-
         // So that block.GetHash() is correct
         //new_work->block.hashMerkleRoot = BlockMerkleRoot(new_work->block);
         new_work->block.hashMerkleRoot = new_work->block.BuildMerkleTree();
 
         // NB! here we have merkle with scriptDummy script in coinbase, after CustomizeWork we should recalculate it (!)
-        // if (instance_of_cstratumparams.fstdErrDebugOutput) std::cerr << __func__ << ": " << __FILE__ << "," << __LINE__ << "hashMerkleRoot = " << new_work->block.hashMerkleRoot.ToString() << std::endl;
 
         job_id = new_work->block.GetHash();
         //work_templates[job_id] = StratumWork(*new_work, new_work->block.vtx[0]->HasWitness());
         work_templates[job_id] = StratumWork(*new_work, false);
+        // Height of the block being mined — used for RandomX key derivation (GetRandomXKey) and
+        // CheckRandomXSolution/CheckProofOfWork on submit. Previously left 0 (Equihash didn't need it).
+        work_templates[job_id].nHeight = tip_new->GetHeight() + 1;
 
         tip = tip_new;
 
@@ -851,12 +858,6 @@ std::string GetWorkUnit(StratumClient& client)
     CMutableTransaction cb, bf;
     std::vector<uint256> cb_branch;
 
-    // if (instance_of_cstratumparams.fstdErrDebugOutput)
-    // {
-    //     std::cerr << __func__ << ": " << __FILE__ << "," << __LINE__ << " [1] cb = " << CTransaction(cb).ToString() << std::endl;
-    //     std::cerr << __func__ << ": " << __FILE__ << "," << __LINE__ << " [1] current_work.GetBlock().vtx[0] = " << current_work.GetBlock().vtx[0].ToString() << std::endl;
-    // }
-
     {
         std::vector<unsigned char> extranonce1 = client.ExtraNonce1(job_id);
 
@@ -873,12 +874,6 @@ std::string GetWorkUnit(StratumClient& client)
 
     }
 
-    // if (instance_of_cstratumparams.fstdErrDebugOutput)
-    // {
-    //     std::cerr << __func__ << ": " << __FILE__ << "," << __LINE__ << " [2] cb = " << CTransaction(cb).ToString() << std::endl;
-    //     std::cerr << __func__ << ": " << __FILE__ << "," << __LINE__ << " [2] current_work.GetBlock().vtx[0] = " << current_work.GetBlock().vtx[0].ToString() << std::endl;
-    // }
-
     CBlockHeader blkhdr;
     // Setup native proof-of-work
 
@@ -934,7 +929,25 @@ std::string GetWorkUnit(StratumClient& client)
     mining_notify.push_back(Pair("method", "mining.notify"));
     mining_notify.push_back(Pair("params", params));
 
+    // RandomX: the miner cannot derive the per-height RandomX key on its own (it depends on a block
+    // hash deep in the chain), so hand it the key bytes + height explicitly. Sent as its own
+    // mining.set_randomx_key message so the equihash-format mining.notify above stays byte-compatible
+    // with legacy miners; a RandomX miner reads this before hashing.
+    std::string randomx_key_msg;
+    if (StratumIsRandomX()) {
+        const std::string rxKey = GetRandomXKey(current_work.nHeight);
+        UniValue set_rxkey(UniValue::VOBJ);
+        set_rxkey.push_back(Pair("id", client.m_nextid++));
+        set_rxkey.push_back(Pair("method", "mining.set_randomx_key"));
+        UniValue rxparams(UniValue::VARR);
+        rxparams.push_back(HexStr(rxKey.begin(), rxKey.end())); // RandomX key bytes (hex)
+        rxparams.push_back(current_work.nHeight);               // block height (sanity/logging)
+        set_rxkey.push_back(Pair("params", rxparams));
+        randomx_key_msg = set_rxkey.write() + "\n";
+    }
+
     return GetExtraNonceRequest(client, job_id)
+         + randomx_key_msg
          + set_target.write() + "\n"
          + mining_notify.write()  + "\n";
 }
@@ -942,8 +955,15 @@ bool SubmitBlock(StratumClient& client, const uint256& job_id, const StratumWork
                  const std::vector<unsigned char>& extranonce1, const std::vector<unsigned char>& extranonce2,
                  boost::optional<uint32_t> nVersion, uint32_t nTime, const std::vector<unsigned char>& sol)
 {
+    // Submit path handles BOTH proof-of-works, branched on StratumIsRandomX():
+    //   * RandomX (DragonX): `sol` is the 32-byte RandomX hash and IS nSolution verbatim; validated
+    //     via CheckRandomXSolution(&blkhdr, height). The target check (GetHash() < target) and the
+    //     nNonce = extranonce1||extranonce2 assembly are identical to the equihash path.
+    //   * Equihash (legacy): `sol` is the 1347-byte solution; the 3-byte zcash prefix is stripped
+    //     and CheckEquihashSolution() validates it.
+    //
     // called from stratum_mining_submit and uses following data, came from client:
-    // ["WORKER_NAME", "JOB_ID", "TIME", "NONCE_2", "EQUIHASH_SOLUTION"]
+    // ["WORKER_NAME", "JOB_ID", "TIME", "NONCE_2", "SOLUTION"]
     // all other params we have saved in other places
 
     if (extranonce1.size() + extranonce2.size() != 32) {
@@ -952,9 +972,9 @@ bool SubmitBlock(StratumClient& client, const uint256& job_id, const StratumWork
         throw JSONRPCError(RPC_INVALID_PARAMETER, msg);
     }
 
-    // TODO: change hardcoded constants on actual determine of solution size, depends on equihash algo type: 200.9, etc.
-    if (sol.size() != 1347) {
-        std::string msg = strprintf("%s: solution is wrong length (received %d bytes; expected %d bytes", __func__, extranonce2.size(), 1347);
+    const size_t expected_sol_size = StratumIsRandomX() ? RX_STRATUM_SOLUTION_SIZE : 1347;
+    if (sol.size() != expected_sol_size) {
+        std::string msg = strprintf("%s: solution is wrong length (received %d bytes; expected %d bytes)", __func__, sol.size(), (int)expected_sol_size);
         LogPrint("stratum", "%s\n", msg);
         throw JSONRPCError(RPC_INVALID_PARAMETER, msg);
     }
@@ -986,24 +1006,27 @@ bool SubmitBlock(StratumClient& client, const uint256& job_id, const StratumWork
         std::vector<unsigned char> nonce(extranonce1);
         nonce.insert(nonce.end(), extranonce2.begin(), extranonce2.end());
 
-        blkhdr.nSolution = std::vector<unsigned char>(sol.begin() + 3, sol.end());
+        // RandomX: nSolution IS the 32-byte RandomX hash (verbatim). Equihash: strip the 3-byte
+        // zcash solution-size prefix.
+        blkhdr.nSolution = StratumIsRandomX() ? sol
+                         : std::vector<unsigned char>(sol.begin() + 3, sol.end());
 
         blkhdr.hashFinalSaplingRoot = current_work.GetBlock().hashFinalSaplingRoot;
         blkhdr.hashMerkleRoot = current_work.GetBlock().hashMerkleRoot;
         blkhdr.nNonce = (uint256) nonce;
 
-        // example how to display constructed block
-        // if (instance_of_cstratumparams.fstdErrDebugOutput) {
-        //     CBlockIndex index {blkhdr};
-        //     index.SetHeight(current_work.nHeight);
-        //     std::cerr << __func__ << ": " << __FILE__ << "," << __LINE__ << " blkhdr.hashPrevBlock = " << blkhdr.hashPrevBlock.GetHex() << std::endl;
-        //     std::cerr << __func__ << ": " << __FILE__ << "," << __LINE__ << " blkhdr = " << blockToJSON(blkhdr, &index).write() << std::endl;
-        // }
-
         // block is constructed, now it's time to VerifyEH
 
-        if (instance_of_cstratumparams.fCheckEquihashSolution && !CheckEquihashSolution(&blkhdr, Params()))
+        if (StratumIsRandomX()) {
+            // Verify the submitted 32-byte solution really is the RandomX hash of this header
+            // (nSolution == randomx_hash(GetRandomXInput(blkhdr), GetRandomXKey(height))). This is the
+            // consensus authority for the solution; without it a miner could submit a low-GetHash()
+            // block with a bogus nSolution. Rejects fake shares before we count/relay them.
+            if (!CheckRandomXSolution(&blkhdr, current_work.nHeight))
+                throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid RandomX solution");
+        } else if (instance_of_cstratumparams.fCheckEquihashSolution && !CheckEquihashSolution(&blkhdr, Params())) {
             throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid equihash solution");
+        }
 
         arith_uint256 bnTarget; bool fNegative, fOverflow;
         bnTarget.SetCompact(blkhdr.nBits, &fNegative, &fOverflow);
@@ -1018,7 +1041,6 @@ bool SubmitBlock(StratumClient& client, const uint256& job_id, const StratumWork
             uint8_t pubkey33[33]; int32_t height = current_work.nHeight;
             res = CheckProofOfWork(blkhdr, pubkey33, height, Params().GetConsensus());
         }
-        // if (instance_of_cstratumparams.fstdErrDebugOutput) std::cerr << DateTimeStrPrecise() << "res[1] = " << res << std::endl;
 
         uint256 hash = blkhdr.GetHash();
 
@@ -1061,27 +1083,8 @@ bool SubmitBlock(StratumClient& client, const uint256& job_id, const StratumWork
             shares_accepted_since_last = counter_TotalShares - counter_prev;
             start = finish;
             counter_prev = counter_TotalShares;
-            // std::cerr << strprintf("%f ms - %" PRIu64 "", elapsed.count(), shares_accepted_since_last) << std::endl;
         }
 
-        bool fDisplayDiffHUSH = true; // otherwise it will display ccminer diff
-
-        std::cerr << DateTimeStrPrecise() <<
-                     strprintf("%saccepted: %" PRIu64 "/%" PRIu64 "%s ", ColorTypeNames[cl_WHT], counter_TotalBlocks, counter_TotalShares, ColorTypeNames[cl_N] );
-        if (fDisplayDiffHUSH) {
-            /* hushd diff display */
-            std::cerr << strprintf("%slocal %g%s ", "\x1B[90m", hush_local_diff, ColorTypeNames[cl_N]) <<
-                         strprintf("%s(diff %g, target %g) %s ", ColorTypeNames[cl_WHT], hush_real_diff, hush_target_diff, ColorTypeNames[cl_N]);
-        } else {   /* ccminer diff display */
-            std::cerr << strprintf("%slocal %.3f%s ", "\x1B[90m", ccminer_local_diff, ColorTypeNames[cl_N]) <<
-                         strprintf("%s(diff %.3f, target %.3f) %s", ColorTypeNames[cl_WHT], ccminer_real_diff, ccminer_target_diff, ColorTypeNames[cl_N]); // ccminer diff
-        }
-
-        std::cerr << "" <<
-                     strprintf("%f ms ", elapsed.count()) << // 1 share took elapsed ms
-                     strprintf("%s%s%s ", ColorTypeNames[cl_LGR], (res ? "yay!!!": "yes!"), ColorTypeNames[cl_N]) <<
-        std::endl;
-
         // (diff %g, target %g), %
         if (res) {
 
@@ -1097,22 +1100,14 @@ bool SubmitBlock(StratumClient& client, const uint256& job_id, const StratumWork
             block.nVersion = version;
             // block.hashMerkleRoot = BlockMerkleRoot(block);
             block.hashMerkleRoot = block.BuildMerkleTree();
-            //if (instance_of_cstratumparams.fstdErrDebugOutput) std::cerr << "hashMerkleRoot = " << block.hashMerkleRoot.GetHex() << std::endl;
 
             block.nTime = nTime;
             // block.nNonce = nNonce;
             // nNonce <<= 32; nNonce >>= 16; // clear the top and bottom 16 bits (for local use as thread flags and counters)
 
             block.nNonce = (uint256) nonce;
-            block.nSolution = std::vector<unsigned char>(sol.begin() + 3, sol.end());
-
-            // example how to pre-check the equihash solution
-            // if(instance_of_cstratumparams.fstdErrDebugOutput) {
-            //     CBlockIndex index {blkhdr};
-            //     index.SetHeight(-1);
-            //     std::cerr << "block = " << blockToJSON(block, &index, true).write(1) << std::endl;
-            //     std::cerr << "CheckEquihashSolution = " << CheckEquihashSolution(&block, Params()) << std::endl;
-            // }
+            block.nSolution = StratumIsRandomX() ? sol
+                            : std::vector<unsigned char>(sol.begin() + 3, sol.end());
 
             // std::shared_ptr<const CBlock> pblock = std::make_shared<const CBlock>(block);
             // res = ProcessNewBlock(Params(), pblock, true, NULL);
@@ -1120,8 +1115,6 @@ bool SubmitBlock(StratumClient& client, const uint256& job_id, const StratumWork
             CValidationState state;
             res = ProcessNewBlock(0,0,state, NULL, &block, true /* forceProcessing */ , NULL);
 
-            //if (instance_of_cstratumparams.fstdErrDebugOutput) std::cerr << DateTimeStrPrecise() << "res[2] = " << res << std::endl;
-
             // we haven't PreciousBlock, so we can't prioritize the block this way for now
             /*
             if (res) {
@@ -1207,14 +1200,6 @@ UniValue stratum_mining_subscribe(StratumClient& client, const UniValue& params)
      * sExtraNonce1 for a given client based on m_secret.
      */
 
-    // if (instance_of_cstratumparams.fstdErrDebugOutput && vExtraNonce1.size() > 3) {
-    //     std::cerr << __func__ << ": " << __FILE__ << "," << __LINE__ << " " << strprintf("client.m_supports_extranonce = %d, [%d, %d, %d, %d], %s", client.m_supports_extranonce, vExtraNonce1[0], vExtraNonce1[1], vExtraNonce1[2], vExtraNonce1[3], sExtraNonce1) << std::endl;
-    //     // recalc from client.m_secret example
-    //     uint256 sha256;
-    //     CSHA256().Write(client.m_secret.begin(), 32).Finalize(sha256.begin());
-    //     std::cerr << __func__ << ": " << __FILE__ << "," << __LINE__ << " " << HexStr(std::vector<unsigned char>(sha256.begin(), sha256.begin() + 4)) << std::endl;
-    // }
-
     ret.push_back(NullUniValue);
     ret.push_back(sExtraNonce1);
 
@@ -1261,7 +1246,7 @@ UniValue stratum_mining_authorize(StratumClient& client, const UniValue& params)
     // This means a miner can run a private pool without TLS and not
     // worry about MITM attacks that change addresses, and leaks less metadata.
     // It also means many miners can be used and updating their mining address does not
-    // require any changes on each miner, just restart hushd with a new -stratumaddress
+    // require any changes on each miner, just restart dragonxd with a new -stratumaddress
     if(addr.ToString() == "x") {
         addr = CBitcoinAddress(GetArg("-stratumaddress", ""));
         const std::string msg = strprintf("%s: Authorized client with default stratum address=%s", __func__, addr.ToString());
@@ -1269,9 +1254,9 @@ UniValue stratum_mining_authorize(StratumClient& client, const UniValue& params)
     }
 
     if (!addr.IsValid()) {
-        const std::string msg = strprintf("%s: Invalid Hush address=%s", __func__, addr.ToString());
+        const std::string msg = strprintf("%s: Invalid DragonX address=%s", __func__, addr.ToString());
         LogPrint("stratum", "%s\n", msg);
-        throw JSONRPCError(RPC_INVALID_PARAMETER, strprintf("Invalid Hush address: %s", username));
+        throw JSONRPCError(RPC_INVALID_PARAMETER, strprintf("Invalid DragonX address: %s", username));
     }
 
     client.m_addr       = addr;
@@ -1315,7 +1300,11 @@ UniValue stratum_mining_configure(StratumClient& client, const UniValue& params)
 
 UniValue stratum_mining_submit(StratumClient& client, const UniValue& params)
 {
-    // {"id": 4, "method": "mining.submit", "params": ["WORKER_NAME", "JOB_ID", "TIME", "NONCE_2", "EQUIHASH_SOLUTION"]}\n
+    // Share submission. On RandomX (DragonX) the SOLUTION param is the 32-byte RandomX hash; on
+    // Equihash (legacy) it is the 1347-byte solution. The size is validated below and the branch is
+    // handled in SubmitBlock(). NONCE_2 is the miner-chosen tail of the 32-byte block nNonce.
+    //
+    // {"id": 4, "method": "mining.submit", "params": ["WORKER_NAME", "JOB_ID", "TIME", "NONCE_2", "SOLUTION"]}\n
 
     // NONCE_1 is first part of the block header nonce (in hex).
     // By protocol, Zcash's nonce is 32 bytes long. The miner will pick NONCE_2 such that len(NONCE_2) = 32 - len(NONCE_1). Please note that Stratum use hex encoding, so you have to convert NONCE_1 from hex to binary before.
@@ -1340,10 +1329,8 @@ UniValue stratum_mining_submit(StratumClient& client, const UniValue& params)
     bool fEWBFJobIDFixNeeded = false;
     uint256 ret;
     if (params[1].isStr()) {
-        //std::cerr << "\"" << params[1].get_str() << "\"" << std::endl;
         const std::string job_id_str = params[1].get_str();
         const std::string hexDigits = "0123456789abcdef";
-        // std::cerr << strprintf("\"%s\" (%d)", job_id_str, job_id_str.length()) << std::endl;
         if (job_id_str.length() == 63) {
             fEWBFJobIDFixNeeded = true;
             for(const auto& hexDigit : hexDigits) {
@@ -1370,8 +1357,9 @@ UniValue stratum_mining_submit(StratumClient& client, const UniValue& params)
     uint32_t nTime = bswap_32(ParseHexInt4(params[2], "nTime"));
 
     std::vector<unsigned char> sol = ParseHexV(params[4], "solution");
-    if (sol.size() != 1347) {
-        throw JSONRPCError(RPC_INVALID_PARAMETER, strprintf("solution is wrong length (received %d bytes; expected %d bytes", sol.size(), 1347));
+    const size_t expected_sol_size = StratumIsRandomX() ? RX_STRATUM_SOLUTION_SIZE : 1347;
+    if (sol.size() != expected_sol_size) {
+        throw JSONRPCError(RPC_INVALID_PARAMETER, strprintf("solution is wrong length (received %d bytes; expected %d bytes)", sol.size(), (int)expected_sol_size));
     }
 
     std::vector<unsigned char> extranonce1 = client.ExtraNonce1(job_id);
@@ -1816,7 +1804,7 @@ void SendKeepAlivePackets()
             if ( (client.m_last_tip && client.m_last_tip->GetHeight() == chainActive.Tip()->GetHeight()) || (!client.m_last_tip) )
             {
                 LOCK(cs_stratum);
-                std::cerr << DateTimeStrPrecise() << "\033[31m" << client.m_from.ToString() << "\033[0m seems stucked (ccminer issue), need to emulate new block incoming to unstuck!" << std::endl;
+                LogPrint("stratum", "%s seems stucked (ccminer issue), need to emulate new block incoming to unstuck!\n", client.m_from.ToString());
                 mempool.AddTransactionsUpdated(1);
                 client.m_last_tip = (client.m_last_tip ? nullptr : chainActive.Tip());
                 client.m_nextid++;
@@ -1829,15 +1817,25 @@ void SendKeepAlivePackets()
 
 }
 
-/** Configure the Hush stratum server */
+/** Configure the DragonX stratum server */
 bool InitStratumServer()
 {
     LOCK(cs_stratum);
 
     int stratumPort = BaseParams().StratumPort();
     int defaultPort = GetArg("-stratumport", stratumPort);
-    fprintf(stderr,"%s: Starting built-in stratum server on port %d\n",__func__, defaultPort );
+    LogPrintf("%s: Starting built-in stratum server on port %d\n",__func__, defaultPort );
 
+    // Optional pool share-target override (64-hex, big-endian like getblocktemplate's "target").
+    // Loosens/tightens the accepted share difficulty; also lets a solo/test miner accept easy shares
+    // on a low-difficulty chain (default is the diff-1 target 00ffff00..). Larger value = easier.
+    if (mapArgs.count("-stratumtarget")) {
+        const std::string t = GetArg("-stratumtarget", "");
+        if (!t.empty()) {
+            instance_of_cstratumparams.setTarget(arith_uint256(t));
+            LogPrintf("%s: stratum pool share target overridden to %s\n", __func__, t);
+        }
+    }
 
     if (!InitStratumAllowList(stratum_allow_subnets)) {
         LogPrint("stratum", "Unable to bind stratum server to an endpoint.\n");
@@ -1959,7 +1957,7 @@ UniValue rpc_stratum_updatework(const UniValue& params, bool fHelp, const CPubKe
 
             // Ignore clients that aren't authorized yet.
             if (!client.m_authorized && client.m_aux_addr.empty()) {
-                fprintf(stderr,"%s: Ignoring unauthorized client\n", __func__);
+                LogPrint("stratum", "%s: Ignoring unauthorized client\n", __func__);
                 continue;
             }
 

src/txdb.cpp

@@ -285,8 +285,9 @@ bool CBlockTreeDB::WriteBatchSync(const std::vector<std::pair<int, const CBlockF
         std::pair<char, uint256> key = make_pair(DB_BLOCK_INDEX, it->GetBlockHash());
         try {
             CDiskBlockIndex dbindex {it, [this, &key]() {
-                // It can happen that the index entry is written, then the Equihash solution is cleared from memory,
+                // It can happen that the index entry is written, then the solution is cleared from memory,
                 // then the index entry is rewritten. In that case we must read the solution from the old entry.
+                // (GetSolution() returns DragonX's RandomX solution.)
                 CDiskBlockIndex dbindex_old;
                 if (!Read(key, dbindex_old)) {
                     LogPrintf("%s: Failed to read index entry", __func__);
@@ -472,7 +473,6 @@ bool CBlockTreeDB::Snapshot2(std::map <std::string, CAmount> &addressAmounts, Un
             iter->GetKey(keyObj);
             char chType = keyObj.first;
             CAddressIndexIteratorKey indexKey = keyObj.second;
-            //fprintf(stderr, "chType=%d\n", chType);
             if (chType == DB_ADDRESSUNSPENTINDEX)
             {
                 try {
@@ -485,7 +485,7 @@ bool CBlockTreeDB::Snapshot2(std::map <std::string, CAmount> &addressAmounts, Un
                     std::map <std::string, int>::iterator ignored = ignoredMap.find(address);
                     if (ignored != ignoredMap.end())
                     {
-                        fprintf(stderr,"ignoring %s\n", address.c_str());
+                        LogPrint("coindb", "ignoring %s\n", address.c_str());
                         ignoredAddresses++;
                         continue;
                     }
@@ -493,17 +493,14 @@ bool CBlockTreeDB::Snapshot2(std::map <std::string, CAmount> &addressAmounts, Un
                     if ( pos == addressAmounts.end() )
                     {
                         // insert new address + utxo amount
-                        //fprintf(stderr, "inserting new address %s with amount %li\n", address.c_str(), nValue);
                         addressAmounts[address] = nValue;
                         totalAddresses++;
                     }
                     else
                     {
                         // update unspent tally for this address
-                        //fprintf(stderr, "updating address %s with new utxo amount %li\n", address.c_str(), nValue);
                         addressAmounts[address] += nValue;
                     }
-                    //fprintf(stderr,"{\"%s\", %.8f},\n",address.c_str(),(double)nValue/COIN);
                     // total += nValue;
                     utxos++;
                     total += nValue;
@@ -517,11 +514,16 @@ bool CBlockTreeDB::Snapshot2(std::map <std::string, CAmount> &addressAmounts, Un
         }
         catch (const std::exception& e)
         {
-            fprintf(stderr, "DONE reading index entries\n");
-            break;
+            // A genuine deserialization/LevelDB error here is NOT normal completion:
+            // the for-loop's iter->Valid() already handles end-of-iteration, and
+            // non-address key types are skipped by the chType check above. Swallowing
+            // the exception and building a snapshot from partial data is wrong. Fail
+            // like the inner catch, which the author marked consensus-relevant
+            // ("we need to exit here if so for consensus code!").
+            fprintf(stderr, "%s: LevelDB index iteration exception! - %s\n", __func__, e.what());
+            return false;
         }
     }
-    //fprintf(stderr, "total=%f, totalAddresses=%li, utxos=%li, ignored=%li\n", (double) total / COIN, totalAddresses, utxos, ignoredAddresses);
 
     // this is for the snapshot RPC, you can skip this by passing a 0 as the last argument.
     if (ret)
@@ -675,23 +677,18 @@ bool CBlockTreeDB::LoadBlockIndexGuts()
     boost::scoped_ptr<CDBIterator> pcursor(NewIterator());
 
     pcursor->Seek(make_pair(DB_BLOCK_INDEX, uint256()));
-    //fprintf(stderr,"%s: Seeked cursor to block index\n",__FUNCTION__);
 
     // Load mapBlockIndex
     while (pcursor->Valid()) {
-        //fprintf(stderr,"%s: Valid cursor\n",__FUNCTION__);
         boost::this_thread::interruption_point();
         std::pair<char, uint256> key;
         if (pcursor->GetKey(key) && key.first == DB_BLOCK_INDEX) {
-            //fprintf(stderr,"%s: Found DB_BLOCK_INDEX\n",__FUNCTION__);
             CDiskBlockIndex diskindex;
             if (pcursor->GetValue(diskindex)) {
                 // Construct block index object
-                //fprintf(stderr,"%s: Creating CBlockIndex...\n",__FUNCTION__);
                 CBlockIndex* pindexNew    = InsertBlockIndex(diskindex.GetBlockHash());
                 pindexNew->pprev          = InsertBlockIndex(diskindex.hashPrev);
                 pindexNew->SetHeight(diskindex.GetHeight());
-                //fprintf(stderr,"%s: Setting CBlockIndex height...\n",__FUNCTION__);
                 pindexNew->nFile                  = diskindex.nFile;
                 pindexNew->nDataPos               = diskindex.nDataPos;
                 pindexNew->nUndoPos               = diskindex.nUndoPos;
@@ -702,14 +699,13 @@ bool CBlockTreeDB::LoadBlockIndexGuts()
                 pindexNew->nTime                  = diskindex.nTime;
                 pindexNew->nBits                  = diskindex.nBits;
                 pindexNew->nNonce                 = diskindex.nNonce;
-                // the Equihash solution will be loaded lazily from the dbindex entry
+                // the solution (DragonX RandomX solution) will be loaded lazily from the dbindex entry
                 // pindexNew->nSolution              = diskindex.nSolution;
                 pindexNew->nStatus                = diskindex.nStatus;
                 pindexNew->nCachedBranchId        = diskindex.nCachedBranchId;
                 pindexNew->nTx                    = diskindex.nTx;
                 pindexNew->nSproutValue           = diskindex.nSproutValue;
                 pindexNew->nSaplingValue          = diskindex.nSaplingValue;
-                //fprintf(stderr,"%s: Setting CBlockIndex details...\n",__FUNCTION__);
                 pindexNew->segid                  = diskindex.segid;
                 pindexNew->nNotaryPay             = diskindex.nNotaryPay;
                 pindexNew->nPayments              = diskindex.nPayments;
@@ -725,7 +721,6 @@ bool CBlockTreeDB::LoadBlockIndexGuts()
                 pindexNew->nFullyShieldedPayments = diskindex.nFullyShieldedPayments;
                 pindexNew->nNotarizations         = diskindex.nNotarizations;
 
-                //fprintf(stderr,"loadguts ht.%d\n",pindexNew->GetHeight());
                 // Consistency checks
                 /*
                 CBlockHeader header;

src/util.cpp

@@ -499,27 +499,35 @@ boost::filesystem::path GetDefaultDataDir()
     if ( SMART_CHAIN_SYMBOL[0] != 0 )
         strcpy(symbol,SMART_CHAIN_SYMBOL);
     else symbol[0] = 0;
-    // OLD NAMES:
-    // Windows < Vista: C:\Documents and Settings\Username\Application Data\Komodo
-    // Windows >= Vista: C:\Users\Username\AppData\Roaming\Komodo
-    // Mac: ~/Library/Application Support/Komodo
-    // Unix: ~/.komodo
+    // DragonX stores its data under a per-chain subdirectory named after
+    // SMART_CHAIN_SYMBOL (which is "DRAGONX"), so the default datadir resolves
+    // to (Unix) ~/.hush/DRAGONX, (Mac) ~/Library/Application Support/Hush/DRAGONX,
+    // or (Windows) %APPDATA%\Hush\DRAGONX.
+    //
+    // The "Hush" / "Komodo" parent-directory names below are retained from the
+    // Hush/Komodo lineage: the ".hush"/"Hush" path is the current location, and
+    // the ".komodo"/"Komodo" path is only probed as a backward-compatible
+    // fallback for pre-existing legacy data directories. Do not change these
+    // string literals -- they determine where node data is read from and written.
 
-    // NEW NAMES:
+    // Current (per-symbol subdirectory lives under these parents):
     // Windows < Vista: C:\Documents and Settings\Username\Application Data\Hush
     // Windows >= Vista: C:\Users\Username\AppData\Roaming\Hush
     // Mac: ~/Library/Application Support/Hush
     // Unix: ~/.hush
 
-    // ~/.hush was actually used by the original 1.x version of Hush, but we will
-    // only make subdirectories inside of it, so we won't be able to overwrite
-    // an old wallet.dat from the Ice Ages :)
+    // Legacy fallback (only used if such a directory already exists):
+    // Windows < Vista: C:\Documents and Settings\Username\Application Data\Komodo
+    // Windows >= Vista: C:\Users\Username\AppData\Roaming\Komodo
+    // Mac: ~/Library/Application Support/Komodo
+    // Unix: ~/.komodo
 
     fs::path pathRet;
 #ifdef _WIN32
     // Windows
     pathRet = GetSpecialFolderPath(CSIDL_APPDATA) / "Hush" / symbol;
-    // Always use .hush/HUSH3, if it exists (even if .komodo/HUSH3 exists)
+    // Always use Hush\<symbol> (Hush\DRAGONX) if it exists, even if the legacy
+    // Komodo\<symbol> directory also exists.
     if(fs::is_directory(pathRet)) {
         return pathRet;
     } else {
@@ -528,7 +536,7 @@ boost::filesystem::path GetDefaultDataDir()
             // existing legacy directory, use that for backward compat
             return pathRet;
         } else {
-            // For new clones, use Hush/ACNAME
+            // For new nodes, use Hush\<symbol>
             pathRet = GetSpecialFolderPath(CSIDL_APPDATA) / "Hush" / symbol;
             return pathRet;
         }
@@ -551,7 +559,7 @@ boost::filesystem::path GetDefaultDataDir()
     // create Library/Application Support/Hush if it doesn't exist
     TryCreateDirectory(tmppath);
 
-    // Always use Hush/HUSH3 if it exists
+    // Always use Hush/<symbol> (Hush/DRAGONX) if it exists
     if(fs::is_directory(tmppath / symbol)) {
         return tmppath / symbol;
     } else {
@@ -563,16 +571,16 @@ boost::filesystem::path GetDefaultDataDir()
             // Found legacy dir, use that
             return tmppath / symbol;
         } else {
-            // For new clones, use Hush/ACNAME
+            // For new nodes, use Hush/<symbol>
             tmppath = pathRet / "Hush" / symbol;
         }
         return tmppath;
     }
 #else
-    // Unix
-    // New directory :)
+    // Unix: current default datadir is ~/.hush/<symbol> (i.e. ~/.hush/DRAGONX)
     fs::path tmppath = pathRet / ".hush" / symbol;
-    // Always use .hush/HUSH3, if it exists (even if .komodo/HUSH3 exists)
+    // Always use ~/.hush/<symbol> (~/.hush/DRAGONX) if it exists, even if the
+    // legacy ~/.komodo/<symbol> directory also exists.
     if(fs::is_directory(tmppath)) {
         return tmppath;
     } else {
@@ -582,7 +590,7 @@ boost::filesystem::path GetDefaultDataDir()
             // existing legacy directory, use that for backward compat
             return tmppath;
         } else {
-            // For new clones, use .hush/ACNAME
+            // For new nodes, use ~/.hush/<symbol>
             tmppath = pathRet / ".hush" / symbol;
         }
         return tmppath;
@@ -598,13 +606,17 @@ static CCriticalSection csPathCached;
 
 static boost::filesystem::path ZC_GetBaseParamsDir()
 {
-    // Copied from GetDefaultDataDir and adapted for zcash params.
+    // Copied from GetDefaultDataDir and adapted for the zk-SNARK parameter files.
+    // DragonX reuses the upstream Sapling parameter directory layout, so these
+    // locations retain the historical "ZcashParams" / ".zcash-params" names. Do
+    // not change these string literals -- they determine where the proving and
+    // verifying keys are loaded from.
     namespace fs = boost::filesystem;
     // Windows < Vista: C:\Documents and Settings\Username\Application Data\ZcashParams
     // Windows >= Vista: C:\Users\Username\AppData\Roaming\ZcashParams
     // Mac: ~/Library/Application Support/ZcashParams
     // Unix: ~/.zcash-params
-	// Debian packages: /usr/share/hush
+	// System-wide install (Debian packages): /usr/share/hush
     fs::path pathRet;
 #ifdef _WIN32
     return GetSpecialFolderPath(CSIDL_APPDATA) / "ZcashParams";

src/wallet/asyncrpcoperation_autoshieldcoinbase.cpp

@@ -37,9 +37,6 @@ static const size_t AUTOSHIELD_MAX_INPUTS = 400;
 // Unrelated to the cap above despite sharing the value: this is a SIZE IN BYTES for
 // one spent P2SH input, mirroring CTXIN_SPEND_P2SH_SIZE in rpcwallet.cpp.
 static const size_t AUTOSHIELD_CTXIN_P2SH_SIZE = 400;
-// Expire unmined autoshield txs after this many blocks, so a tx cannot straddle
-// a network-upgrade activation.
-static const int AUTOSHIELD_EXPIRY_DELTA = 15;
 
 AsyncRPCOperation_autoshieldcoinbase::AsyncRPCOperation_autoshieldcoinbase(int targetHeight)
     : targetHeight_(targetHeight) {}
@@ -66,23 +63,8 @@ void AsyncRPCOperation_autoshieldcoinbase::main() {
 
     try {
         success = main_impl();
-    } catch (const UniValue& objError) {
-        int code = find_value(objError, "code").get_int();
-        std::string message = find_value(objError, "message").get_str();
-        set_error_code(code);
-        set_error_message(message);
-    } catch (const runtime_error& e) {
-        set_error_code(-1);
-        set_error_message("runtime error: " + string(e.what()));
-    } catch (const logic_error& e) {
-        set_error_code(-1);
-        set_error_message("logic error: " + string(e.what()));
-    } catch (const exception& e) {
-        set_error_code(-1);
-        set_error_message("general exception: " + string(e.what()));
     } catch (...) {
-        set_error_code(-2);
-        set_error_message("unknown error");
+        set_error_from_current_exception();
     }
 
     stop_execution_clock();
@@ -310,7 +292,7 @@ bool AsyncRPCOperation_autoshieldcoinbase::main_impl() {
     // from below), not the stale enqueue-time targetHeight_, so a queue delay
     // cannot slip a straddling expiry past this guard.
     auto nextActivationHeight = NextActivationHeight(tipHeight, consensusParams);
-    if (nextActivationHeight && tipHeight + AUTOSHIELD_EXPIRY_DELTA >= nextActivationHeight.get()) {
+    if (nextActivationHeight && tipHeight + AUTO_OP_EXPIRY_DELTA >= nextActivationHeight.get()) {
         LogPrintf("%s: autoshield tx could expire across a NU activation. Skipping this round.\n", opid);
         return true;
     }
@@ -430,7 +412,7 @@ bool AsyncRPCOperation_autoshieldcoinbase::main_impl() {
     // stale enqueue-time height here meant the guard was checking a height the
     // transaction was not actually signed against.
     auto builder = TransactionBuilder(consensusParams, tipHeight, pwalletMain);
-    builder.SetExpiryHeight(tipHeight + AUTOSHIELD_EXPIRY_DELTA);
+    builder.SetExpiryHeight(tipHeight + AUTO_OP_EXPIRY_DELTA);
     builder.SetFee(fee);
 
     for (const auto& t : inputs) {

src/wallet/asyncrpcoperation_autoshieldcoinbase.h

@@ -11,9 +11,6 @@
 #include "zcash/Address.hpp"
 #include "zcash/zip32.h"
 
-// Default fee for automatic coinbase-shielding transactions
-static const CAmount DEFAULT_AUTOSHIELD_FEE = 10000;
-
 // Sentinel for "not a derived account" (i.e. the configured -autoshieldaddress).
 static const uint32_t AUTOSHIELD_ACCOUNT_NONE = UINT32_MAX;
 

src/wallet/asyncrpcoperation_mergetoaddress.cpp

@@ -133,23 +133,8 @@ void AsyncRPCOperation_mergetoaddress::main()
 
     try {
         success = main_impl();
-    } catch (const UniValue& objError) {
-        int code = find_value(objError, "code").get_int();
-        std::string message = find_value(objError, "message").get_str();
-        set_error_code(code);
-        set_error_message(message);
-    } catch (const runtime_error& e) {
-        set_error_code(-1);
-        set_error_message("runtime error: " + string(e.what()));
-    } catch (const logic_error& e) {
-        set_error_code(-1);
-        set_error_message("logic error: " + string(e.what()));
-    } catch (const exception& e) {
-        set_error_code(-1);
-        set_error_message("general exception: " + string(e.what()));
     } catch (...) {
-        set_error_code(-2);
-        set_error_message("unknown error");
+        set_error_from_current_exception();
     }
 
 #ifdef ENABLE_MINING

src/wallet/asyncrpcoperation_saplingconsolidation.cpp

@@ -19,7 +19,12 @@
 
 CAmount fConsolidationTxFee = DEFAULT_CONSOLIDATION_FEE;
 bool fConsolidationMapUsed = false;
-const int CONSOLIDATION_EXPIRY_DELTA = 15;
+
+// Number of Sietch dummy ("zdust") shielded outputs added to every consolidation
+// transaction to obscure the real output and keep the anonymity set large. This is
+// a wallet privacy-tuning parameter (not a consensus rule); the sweep operation uses
+// the same value under the name ZOUTS.
+static const int MIN_ZOUTS = 7;
 
 extern string randomSietchZaddr();
 
@@ -47,24 +52,8 @@ void AsyncRPCOperation_saplingconsolidation::main() {
 
     try {
         success = main_impl();
-    } catch (const UniValue& objError) {
-        int code = find_value(objError, "code").get_int();
-        std::string message = find_value(objError, "message").get_str();
-        set_error_code(code);
-        set_error_message(message);
-    } catch (const runtime_error& e) {
-        set_error_code(-1);
-        set_error_code(-1);
-        set_error_message("runtime error: " + string(e.what()));
-    } catch (const logic_error& e) {
-        set_error_code(-1);
-        set_error_message("logic error: " + string(e.what()));
-    } catch (const exception& e) {
-        set_error_code(-1);
-        set_error_message("general exception: " + string(e.what()));
     } catch (...) {
-        set_error_code(-2);
-        set_error_message("unknown error");
+        set_error_from_current_exception();
     }
 
     stop_execution_clock();
@@ -107,8 +96,18 @@ bool AsyncRPCOperation_saplingconsolidation::main_impl() {
     auto opid=getId();
     LogPrintf("%s: Beginning AsyncRPCOperation_saplingconsolidation\n", opid);
     auto consensusParams = Params().GetConsensus();
-    auto nextActivationHeight = NextActivationHeight(targetHeight_, consensusParams);
-    if (nextActivationHeight && targetHeight_ + CONSOLIDATION_EXPIRY_DELTA >= nextActivationHeight.get()) {
+    int tipHeight;
+    {
+        LOCK(cs_main);
+        tipHeight = (chainActive.Tip() != NULL) ? chainActive.Tip()->GetHeight() : targetHeight_;
+    }
+
+    // Build and expire against tipHeight (execution-time), not the stale
+    // enqueue-time targetHeight_, so the builder's consensus-branch selection and
+    // the NU-straddle guard agree with the height the tx is signed for. Mirrors
+    // the autoshield op (commit 65130c312).
+    auto nextActivationHeight = NextActivationHeight(tipHeight, consensusParams);
+    if (nextActivationHeight && tipHeight + AUTO_OP_EXPIRY_DELTA >= nextActivationHeight.get()) {
         LogPrintf("%s: Consolidation txs would be created before a NU activation but may expire after. Skipping this round.\n",opid);
         setConsolidationResult(0, 0, std::vector<std::string>());
         return status;
@@ -189,8 +188,8 @@ bool AsyncRPCOperation_saplingconsolidation::main_impl() {
             if (fromNotes.size() < minQuantity)
               continue;
 
-            auto builder = TransactionBuilder(consensusParams, targetHeight_, pwalletMain);
-            builder.SetExpiryHeight(targetHeight_ + CONSOLIDATION_EXPIRY_DELTA);
+            auto builder = TransactionBuilder(consensusParams, tipHeight, pwalletMain);
+            builder.SetExpiryHeight(tipHeight + AUTO_OP_EXPIRY_DELTA);
             auto actualAmountToSend = amountToSend < fConsolidationTxFee ? 0 : amountToSend - fConsolidationTxFee;
             LogPrintf("%s: %s Beginning to create transaction with Sapling output amount=%s\n", __func__, opid, FormatMoney(actualAmountToSend));
 
@@ -230,10 +229,10 @@ bool AsyncRPCOperation_saplingconsolidation::main_impl() {
             builder.AddSaplingOutput(extsk.expsk.ovk, addr, actualAmountToSend);
             LogPrint("zrpcunsafe", "%s: Added consolidation output %s with amount=%li\n", opid, addr.GetHash().ToString().c_str(), actualAmountToSend);
 
-            // Add sietch zouts
-            int MIN_ZOUTS = 7;
+            // Add sietch zouts: MIN_ZOUTS dummy zero-value shielded outputs to
+            // randomly-generated z-addresses, so the consolidation tx does not
+            // shrink the anonymity set.
             for(size_t i = 0; i < MIN_ZOUTS; i++) {
-                // In Privacy Zdust We Trust -- Duke
                 string zdust = randomSietchZaddr();
                 auto zaddr   = DecodePaymentAddress(zdust);
                 if (IsValidPaymentAddress(zaddr)) {

src/wallet/asyncrpcoperation_sendmany.cpp

@@ -155,23 +155,8 @@ void AsyncRPCOperation_sendmany::main() {
 
     try {
         success = main_impl();
-    } catch (const UniValue& objError) {
-        int code = find_value(objError, "code").get_int();
-        std::string message = find_value(objError, "message").get_str();
-        set_error_code(code);
-        set_error_message(message);
-    } catch (const runtime_error& e) {
-        set_error_code(-1);
-        set_error_message("runtime error: " + string(e.what()));
-    } catch (const logic_error& e) {
-        set_error_code(-1);
-        set_error_message("logic error: " + string(e.what()));
-    } catch (const exception& e) {
-        set_error_code(-1);
-        set_error_message("general exception: " + string(e.what()));
     } catch (...) {
-        set_error_code(-2);
-        set_error_message("unknown error");
+        set_error_from_current_exception();
     }
 
     unlock_notes();
@@ -215,9 +200,10 @@ bool AsyncRPCOperation_sendmany::main_impl() {
     bool isPureTaddrOnlyTx     = (isfromtaddr_ && z_outputs_.size() == 0);
     CAmount minersFee = fee_;
 
-    // TODO: fix this garbage ZEC prisoner mindset bullshit
-    // When spending coinbase utxos, you can only specify a single zaddr as the change must go somewhere
-    // and if there are multiple zaddrs, we don't know where to send it.
+    // Coinbase-change routing constraint:
+    // When spending coinbase UTXOs, only a single zaddr recipient may be specified, because the
+    // change must be routed somewhere and with multiple zaddr recipients there is no unambiguous
+    // destination for it. See the isSingleZaddrOutput / isMultipleZaddrOutput handling below.
     if (isfromtaddr_) {
         if (isSingleZaddrOutput) {
             bool b = find_utxos(true);
@@ -325,14 +311,12 @@ bool AsyncRPCOperation_sendmany::main_impl() {
             CScript scriptPubKey;
             for (auto t : t_inputs_) {
                 scriptPubKey = GetScriptForDestination(std::get<4>(t));
-                //printf("Checking new script: %s\n", scriptPubKey.ToString().c_str());
                 uint256 txid = std::get<0>(t);
                 int vout = std::get<1>(t);
                 CAmount amount = std::get<2>(t);
                 builder_.AddTransparentInput(COutPoint(txid, vout), scriptPubKey, amount);
             }
             // for other chains, set locktime to spend time locked coinbases
-            //builder_.SetLockTime((uint32_t)chainActive.Tip()->GetMedianTimePast());
         } else {
             CMutableTransaction rawTx(tx_);
             for (SendManyInputUTXO & t : t_inputs_) {
@@ -342,7 +326,6 @@ bool AsyncRPCOperation_sendmany::main_impl() {
                 CTxIn in(COutPoint(txid, vout));
                 rawTx.vin.push_back(in);
             }
-            //rawTx.nLockTime = (uint32_t)chainActive.Tip()->GetMedianTimePast();
             tx_ = CTransaction(rawTx);
         }
     }
@@ -357,8 +340,8 @@ bool AsyncRPCOperation_sendmany::main_impl() {
 
 
     /**
-     * SCENARIO #0 (All HUSH and Hush Arrakis Chains)
-     * Sprout not involved, so we just use the TransactionBuilder and we're done.
+     * SCENARIO #0 (DragonX and all Sapling-only chains)
+     * Sprout is not involved, so we just use the TransactionBuilder and we're done.
      * We added the transparent inputs to the builder earlier.
      */
     if (isUsingBuilder_) {
@@ -416,7 +399,6 @@ bool AsyncRPCOperation_sendmany::main_impl() {
         }
 
         // Fetch Sapling anchor and witnesses
-        //LogPrintf("%s: Gathering anchors and witnesses\n", __FUNCTION__);
         uint256 anchor;
         std::vector<boost::optional<SaplingWitness>> witnesses;
         {
@@ -510,7 +492,8 @@ bool AsyncRPCOperation_sendmany::main_impl() {
         return true;
     }
     // END SCENARIO #0
-    // No other scenarios, because Hush developers are elite.
+    // No other scenarios: DragonX is Sapling-only (Sprout removed), so the builder path above
+    // handles every supported case. Reaching here means the builder was not used, which is unexpected.
     return false;
 }
 
@@ -625,7 +608,6 @@ bool AsyncRPCOperation_sendmany::find_utxos(bool fAcceptCoinbase=false) {
                 continue;
             }
 
-            //printf("%s\n", boost::apply_visitor(AddressVisitorString(), dest).c_str());
             if (!destinations.count(dest)) {
                 continue;
             }
@@ -673,7 +655,8 @@ void AsyncRPCOperation_sendmany::add_taddr_outputs_to_tx() {
         rawTx.vout.push_back(out);
     }
     if ( !hush_hardfork_active((uint32_t)chainActive.LastTip()->nTime) )
-        rawTx.nLockTime = (uint32_t)time(NULL) - 60; // jl777
+        // Pre-hardfork: set nLockTime slightly in the past so the tx is immediately spendable.
+        rawTx.nLockTime = (uint32_t)time(NULL) - 60;
     else
         rawTx.nLockTime = (uint32_t)chainActive.Tip()->GetMedianTimePast();
 
@@ -703,7 +686,8 @@ void AsyncRPCOperation_sendmany::add_taddr_change_output_to_tx(CBitcoinAddress *
     CMutableTransaction rawTx(tx_);
     rawTx.vout.push_back(out);
     if ( !hush_hardfork_active((uint32_t)chainActive.LastTip()->nTime) )
-        rawTx.nLockTime = (uint32_t)time(NULL) - 60; // jl777
+        // Pre-hardfork: set nLockTime slightly in the past so the tx is immediately spendable.
+        rawTx.nLockTime = (uint32_t)time(NULL) - 60;
     else
         rawTx.nLockTime = (uint32_t)chainActive.Tip()->GetMedianTimePast();
     tx_ = CTransaction(rawTx);

src/wallet/asyncrpcoperation_shieldcoinbase.cpp

@@ -68,7 +68,7 @@ AsyncRPCOperation_shieldcoinbase::AsyncRPCOperation_shieldcoinbase(
         throw JSONRPCError(RPC_WALLET_INSUFFICIENT_FUNDS, "Empty inputs");
     }
 
-    if (donation < 0 || donation > 10 ) {
+    if (donation > 10 ) {
         throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid donation percentage, must be an integer between 0 and 10 inclusive");
     }
 
@@ -116,23 +116,8 @@ void AsyncRPCOperation_shieldcoinbase::main() {
 
     try {
         success = main_impl();
-    } catch (const UniValue& objError) {
-        int code = find_value(objError, "code").get_int();
-        std::string message = find_value(objError, "message").get_str();
-        set_error_code(code);
-        set_error_message(message);
-    } catch (const runtime_error& e) {
-        set_error_code(-1);
-        set_error_message("runtime error: " + string(e.what()));
-    } catch (const logic_error& e) {
-        set_error_code(-1);
-        set_error_message("logic error: " + string(e.what()));
-    } catch (const exception& e) {
-        set_error_code(-1);
-        set_error_message("general exception: " + string(e.what()));
     } catch (...) {
-        set_error_code(-2);
-        set_error_message("unknown error");
+        set_error_from_current_exception();
     }
 
 #ifdef ENABLE_MINING

src/wallet/asyncrpcoperation_sweep.cpp

@@ -19,7 +19,6 @@ extern string randomSietchZaddr();
 
 CAmount fSweepTxFee = DEFAULT_SWEEP_FEE;
 bool fSweepMapUsed = false;
-const int SWEEP_EXPIRY_DELTA = 15;
 boost::optional<libzcash::SaplingPaymentAddress> rpcSweepAddress;
 
 AsyncRPCOperation_sweep::AsyncRPCOperation_sweep(int targetHeight, bool fromRpc) : targetHeight_(targetHeight), fromRPC_(fromRpc){}
@@ -46,23 +45,8 @@ void AsyncRPCOperation_sweep::main() {
 
     try {
         success = main_impl();
-    } catch (const UniValue& objError) {
-        int code = find_value(objError, "code").get_int();
-        std::string message = find_value(objError, "message").get_str();
-        set_error_code(code);
-        set_error_message(message);
-    } catch (const runtime_error& e) {
-        set_error_code(-1);
-        set_error_message("runtime error: " + string(e.what()));
-    } catch (const logic_error& e) {
-        set_error_code(-1);
-        set_error_message("logic error: " + string(e.what()));
-    } catch (const exception& e) {
-        set_error_code(-1);
-        set_error_message("general exception: " + string(e.what()));
     } catch (...) {
-        set_error_code(-2);
-        set_error_message("unknown error");
+        set_error_from_current_exception();
     }
 
     stop_execution_clock();
@@ -112,7 +96,7 @@ bool IsExcludedAddress(libzcash::SaplingPaymentAddress zaddr) {
             }
         } else {
             // This is an invalid sapling zaddr
-            LogPrintf("%s: Invalid zsweepexclude zaddr %s, ignoring\n", sweepExcludeAddress);
+            LogPrintf("%s: Invalid zsweepexclude zaddr %s, ignoring\n", __func__, sweepExcludeAddress);
             continue;
         }
 
@@ -126,10 +110,21 @@ bool AsyncRPCOperation_sweep::main_impl() {
     auto opid=getId();
     LogPrintf("%s: Beginning asyncrpcoperation_sweep.\n", getId());
     auto consensusParams = Params().GetConsensus();
-    auto nextActivationHeight = NextActivationHeight(targetHeight_, consensusParams);
-    if (nextActivationHeight && targetHeight_ + SWEEP_EXPIRY_DELTA >= nextActivationHeight.get()) {
+    int tipHeight;
+    {
+        LOCK(cs_main);
+        tipHeight = (chainActive.Tip() != NULL) ? chainActive.Tip()->GetHeight() : targetHeight_;
+    }
+
+    // Key the NU-straddle guard and the tx builder/expiry off tipHeight (the
+    // height we actually build and expire against), not the stale enqueue-time
+    // targetHeight_, so a queue delay cannot slip a straddling expiry past this
+    // guard. Mirrors the autoshield op (commit 65130c312).
+    auto nextActivationHeight = NextActivationHeight(tipHeight, consensusParams);
+    if (nextActivationHeight && tipHeight + AUTO_OP_EXPIRY_DELTA >= nextActivationHeight.get()) {
         LogPrintf("%s: Sweep txs would be created before a NU activation but may expire after. Skipping this round.\n", getId());
         setSweepResult(0, 0, std::vector<std::string>());
+        sweepComplete_ = true;  // nothing to do this round; back nextSweep off one interval instead of re-dispatching every block
         return true;
     }
 
@@ -258,11 +253,8 @@ bool AsyncRPCOperation_sweep::main_impl() {
                 fee = 0;
             }
 
-            auto builder = TransactionBuilder(consensusParams, targetHeight_, pwalletMain);
-            {
-                LOCK2(cs_main, pwalletMain->cs_wallet);
-                builder.SetExpiryHeight(chainActive.Tip()->GetHeight()+ SWEEP_EXPIRY_DELTA);
-            }
+            auto builder = TransactionBuilder(consensusParams, tipHeight, pwalletMain);
+            builder.SetExpiryHeight(tipHeight + AUTO_OP_EXPIRY_DELTA);
             LogPrintf("%s: Beginning creating transaction with Sapling output amount=%s\n", getId(), FormatMoney(amountToSend - fee));
 
             // Select Sapling notes

src/wallet/crypter.cpp

@@ -24,7 +24,10 @@
 #include <string>
 #include <vector>
 #include <boost/foreach.hpp>
-// TODO: these are not set correctly by wolfssl for some reason. Ja bless.
+// Enable wolfSSL timing-resistant ECC and TFM (fastmath) code paths, which
+// harden against timing side-channels. wolfSSL gates these purely with #ifdef,
+// so the defined value is immaterial (any value enables the feature); we do not
+// rely on 420 meaning anything.
 #undef ECC_TIMING_RESISTANT
 #undef TFM_TIMING_RESISTANT
 #define ECC_TIMING_RESISTANT 420
@@ -306,7 +309,7 @@ bool CCryptoKeyStore::Unlock(const CKeyingMaterial& vMasterKeyIn)
         }
         if (keyPass && keyFail)
         {
-            LogPrintf("Oh shit! The wallet is probably corrupted: Some keys decrypt but not all.\n");
+            LogPrintf("The wallet is probably corrupted: some keys decrypt but not all.\n");
             assert(false);
         }
         if (keyFail || !keyPass)

src/wallet/crypter.h

@@ -165,12 +165,12 @@ private:
     // .second is the ciphertext.
     std::pair<uint256, std::vector<unsigned char>> cryptedMnemonicEntropy;
     CryptedKeyMap mapCryptedKeys;
-    //CryptedSproutSpendingKeyMap mapCryptedSproutSpendingKeys;
     CryptedSaplingSpendingKeyMap mapCryptedSaplingSpendingKeys;
 
     CKeyingMaterial vMasterKey;
 
-    //! if fUseCrypto is true, mapKeys, mapSproutSpendingKeys, and mapSaplingSpendingKeys must be empty
+    //! if fUseCrypto is true, mapKeys and mapSaplingSpendingKeys must be empty
+    //! (Sprout was removed; the former mapSproutSpendingKeys no longer exists)
     //! if fUseCrypto is false, vMasterKey must be empty
     bool fUseCrypto;
 

src/wallet/rpcdump.cpp

@@ -95,7 +95,7 @@ UniValue convertpassphrase(const UniValue& params, bool fHelp, const CPubKey& my
             "1. \"agamapassphrase\"   (string, required) Agama passphrase\n"
             "\nResult:\n"
             "\"agamapassphrase\": \"agamapassphrase\",   (string) Agama passphrase you entered\n"
-            "\"address\": \"hushaddress\",             (string) Address corresponding to your passphrase\n"
+            "\"address\": \"dragonxaddress\",           (string) Address corresponding to your passphrase\n"
             "\"pubkey\": \"publickeyhex\",               (string) The hex value of the raw public key\n"
             "\"privkey\": \"privatekeyhex\",             (string) The hex value of the raw private key\n"
             "\"wif\": \"wif\"                            (string) The private key in WIF format to use with 'importprivkey'\n"
@@ -196,9 +196,9 @@ UniValue getrescaninfo(const UniValue& params, bool fHelp, const CPubKey& mypk)
         auto startHeight   = pwalletMain->rescanStartHeight;
         auto currentHeight = chainActive.Height();
         // if current height is 0, progress=1 since there is nothing to rescan
-        char progress[8];
+        char progress[16];
         if (currentHeight != 0) {
-            sprintf(progress, "%.4f", (double) rescanHeight / (double) currentHeight );
+            snprintf(progress, sizeof(progress), "%.4f", (double) rescanHeight / (double) currentHeight );
             ret.push_back(Pair("rescan_progress", progress));
         }
         ret.push_back(Pair("rescan_start_height", startHeight));
@@ -255,10 +255,10 @@ UniValue importprivkey(const UniValue& params, bool fHelp, const CPubKey& mypk)
 
     if (fHelp || params.size() < 1 || params.size() > 5)
         throw runtime_error(
-            "importprivkey \"hushprivkey\" ( \"label\" rescan height secret_key)\n"
+            "importprivkey \"dragonxprivkey\" ( \"label\" rescan height secret_key)\n"
             "\nAdds a private key (as returned by dumpprivkey) to your wallet.\n"
             "\nArguments:\n"
-            "1. \"hushprivkey\"   (string, required) The private key (see dumpprivkey)\n"
+            "1. \"dragonxprivkey\"   (string, required) The private key (see dumpprivkey)\n"
             "2. \"label\"            (string, optional, default=\"\") An optional label\n"
             "3. rescan               (boolean, optional, default=true) Rescan the wallet for transactions\n"
             "4. height               (integer, optional, default=0) start at block height?\n"
@@ -305,7 +305,7 @@ UniValue importprivkey(const UniValue& params, bool fHelp, const CPubKey& mypk)
 
     if (params.size() > 4)
     {
-        auto secret_key = AmountFromValue(params[4])/100000000;
+        secret_key = AmountFromValue(params[4])/100000000;
         key = DecodeCustomSecret(strSecret, secret_key);
     } else {
         key = DecodeSecret(strSecret);
@@ -378,7 +378,7 @@ UniValue importaddress(const UniValue& params, bool fHelp, const CPubKey& mypk)
         std::vector<unsigned char> data(ParseHex(params[0].get_str()));
         script = CScript(data.begin(), data.end());
     } else {
-        throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid Hush address or script");
+        throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid DragonX address or script");
     }
 
     string strLabel = "";
@@ -504,7 +504,7 @@ UniValue importwallet_impl(const UniValue& params, bool fHelp, bool fImportZKeys
         if (vstr.size() < 2)
             continue;
 
-        // Let's see if the address is a valid Hush spending key
+        // Let's see if the address is a valid DragonX spending key
         if (fImportZKeys) {
             auto spendingkey = DecodeSpendingKey(vstr[0]);
             int64_t nTime = DecodeDumpTime(vstr[1]);
@@ -524,7 +524,7 @@ UniValue importwallet_impl(const UniValue& params, bool fHelp, bool fImportZKeys
                 continue;
             } else {
                 LogPrintf("%s: Importing detected an error: invalid spending key. Trying as a transparent key...\n",__func__);
-                // Not a valid spending key, so carry on and see if it's a Hush transparent address
+                // Not a valid spending key, so carry on and see if it's a DragonX transparent address
             }
         }
 
@@ -585,6 +585,12 @@ UniValue importwallet_impl(const UniValue& params, bool fHelp, bool fImportZKeys
             }
         }
 
+    // A failed key/address add must surface on BOTH paths; previously this
+    // check lived inside the fRescan block, so importwallet with rescan=false
+    // silently reported success even when some keys failed to import.
+    if (!fGood)
+        throw JSONRPCError(RPC_WALLET_ERROR, "Error adding some keys to wallet");
+
     if (fRescan) {
         CBlockIndex *pindex = chainActive.LastTip();
         while (pindex && pindex->pprev && pindex->GetBlockTime() > nTimeBegin - 7200)
@@ -595,15 +601,11 @@ UniValue importwallet_impl(const UniValue& params, bool fHelp, bool fImportZKeys
             pwalletMain->nTimeFirstKey = nTimeBegin;
         pwalletMain->ScanForWalletTransactions(pindex);
         pwalletMain->MarkDirty();
+    } else {
+        LogPrintf("Importwallet without rescan successful\n");
+    }
 
-     if (!fGood)
-         throw JSONRPCError(RPC_WALLET_ERROR, "Error adding some keys to wallet");
-
-         return NullUniValue; }
-
-         else{
-             LogPrintf("Importwallet without Rescan successfull\n");
-         return NullUniValue;}
+    return NullUniValue;
 }
 
 
@@ -659,7 +661,7 @@ UniValue z_exportwallet(const UniValue& params, bool fHelp, const CPubKey& mypk)
             "z_exportwallet \"filename\"\n"
             "\nExports all wallet keys, for taddr and zaddr, in a human-readable format.  Overwriting an existing file is not permitted.\n"
             "\nArguments:\n"
-            "1. \"filename\"    (string, required) The filename, saved in folder set by hushd -exportdir option\n"
+            "1. \"filename\"    (string, required) The filename, saved in folder set by dragonxd -exportdir option\n"
             "\nResult:\n"
             "\"path\"           (string) The full path of the destination file\n"
             "\nExamples:\n"
@@ -680,7 +682,7 @@ UniValue dumpwallet(const UniValue& params, bool fHelp, const CPubKey& mypk)
             "dumpwallet \"filename\"\n"
             "\nDumps taddr wallet keys in a human-readable format.  Overwriting an existing file is not permitted.\n"
             "\nArguments:\n"
-            "1. \"filename\"    (string, required) The filename, saved in folder set by hushd -exportdir option\n"
+            "1. \"filename\"    (string, required) The filename, saved in folder set by dragonxd -exportdir option\n"
             "\nResult:\n"
             "\"path\"           (string) The full path of the destination file\n"
             "\nExamples:\n"
@@ -736,7 +738,7 @@ UniValue dumpwallet_impl(const UniValue& params, bool fHelp, bool fDumpZKeys)
     std::sort(vKeyBirth.begin(), vKeyBirth.end());
 
     // produce output
-    file << strprintf("# Wallet dump created by Hush %s (%s)\n", CLIENT_BUILD);
+    file << strprintf("# Wallet dump created by DragonX %s (%s)\n", CLIENT_BUILD);
     file << strprintf("# * Created on %s\n", EncodeDumpTime(GetTime()));
     file << strprintf("# * Best block at time of backup was %i (%s),\n", chainActive.Height(), chainActive.Tip()->GetBlockHash().ToString());
     file << strprintf("#   mined on %s\n", EncodeDumpTime(chainActive.Tip()->GetBlockTime()));
@@ -1231,7 +1233,6 @@ UniValue nspv_listtransactions(const UniValue& params, bool fHelp, const CPubKey
             CCflag = atoi((char *)params[1].get_str().c_str());
         if ( params.size() == 3 )
             skipcount = atoi((char *)params[2].get_str().c_str());
-        //fprintf(stderr,"call txids cc.%d skip.%d\n",CCflag,skipcount);
         return(NSPV_addresstxids((char *)params[0].get_str().c_str(),CCflag,skipcount,0));
     }
     else throw runtime_error("nspv_listtransactions [address [isCC [skipcount]]]\n");
@@ -1294,7 +1295,6 @@ UniValue nspv_spend(const UniValue& params, bool fHelp, const CPubKey& mypk)
     if ( NSPV_address.size() == 0 )
         throw runtime_error("to nspv_send you need an active nspv_login\n");
     satoshis = atof(params[1].get_str().c_str())*COIN + 0.0000000049;
-    //fprintf(stderr,"satoshis.%lld from %.8f\n",(long long)satoshis,atof(params[1].get_str().c_str()));
     if ( satoshis < 1000 )
         throw runtime_error("amount too small\n");
     return(NSPV_spend((char *)NSPV_address.c_str(),(char *)params[0].get_str().c_str(),satoshis));

src/wallet/rpcwallet.cpp

@@ -364,7 +364,7 @@ UniValue setaccount(const UniValue& params, bool fHelp, const CPubKey& mypk)
 
     CTxDestination dest = DecodeDestination(params[0].get_str());
     if (!IsValidDestination(dest)) {
-        throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid Hush address!");
+        throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid DragonX address!");
     }
 
     string strAccount;
@@ -411,7 +411,7 @@ UniValue getaccount(const UniValue& params, bool fHelp, const CPubKey& mypk)
 
     CTxDestination dest = DecodeDestination(params[0].get_str());
     if (!IsValidDestination(dest)) {
-        throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid Hush address!");
+        throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid DragonX address!");
     }
 
     std::string strAccount;
@@ -496,7 +496,6 @@ static void SendMoney(const CTxDestination &address, CAmount nValue, bool fSubtr
     // Check amount
     if (nValue <= 0)
         throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid amount");
-//fprintf(stderr,"nValue %.8f vs curBalance %.8f\n",(double)nValue/COIN,(double)curBalance/COIN);
     if (nValue > curBalance)
         throw JSONRPCError(RPC_WALLET_INSUFFICIENT_FUNDS, "Insufficient funds");
 
@@ -518,9 +517,7 @@ static void SendMoney(const CTxDestination &address, CAmount nValue, bool fSubtr
         for (i=0; i<opretlen; i++)
         {
             opretpubkey[i] = opretbuf[i];
-            //printf("%02x",ptr[i]);
         }
-        //printf(" opretbuf[%d]\n",opretlen);
         CRecipient opret = { opretpubkey, opretValue, false };
         vecSend.push_back(opret);
     }
@@ -574,7 +571,7 @@ UniValue sendtoaddress(const UniValue& params, bool fHelp, const CPubKey& mypk)
 
     CTxDestination dest = DecodeDestination(params[0].get_str());
     if (!IsValidDestination(dest)) {
-        throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid Hush address!");
+        throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid DragonX address!");
     }
 
     // Amount
@@ -665,7 +662,6 @@ UniValue kvupdate(const UniValue& params, bool fHelp, const CPubKey& mypk)
     if ( (n= (int32_t)params.size()) >= 3 )
     {
         flags = atoi(params[2].get_str().c_str());
-        //printf("flags.%d (%s) n.%d\n",flags,params[2].get_str().c_str(),n);
     } else flags = 0;
     if ( n >= 4 )
         privkey = hush_kvprivkey(&pubkey,(char *)(n >= 4 ? params[3].get_str().c_str() : "password"));
@@ -704,15 +700,13 @@ UniValue kvupdate(const UniValue& params, bool fHelp, const CPubKey& mypk)
                 if ( hush_kvsigverify(keyvalue,keylen+refvaluesize,refpubkey,sig) < 0 )
                 {
                     ret.push_back(Pair("error",(char *)"error verifying sig, passphrase is probably wrong"));
-                    printf("VERIFY ERROR\n");
+                    LogPrintf("VERIFY ERROR\n");
                     return ret;
-                } // else printf("verified immediately\n");
                 }
             }
-        //for (i=0; i<32; i++)
-        //    printf("%02x",((uint8_t *)&sig)[i]);
-        //printf(" sig for keylen.%d + valuesize.%d\n",keylen,refvaluesize);
-        ret.push_back(Pair("coin",(char *)(SMART_CHAIN_SYMBOL[0] == 0 ? "HUSH3" : SMART_CHAIN_SYMBOL)));
+        }
+        // The SMART_CHAIN_SYMBOL[0]==0 fallback is dead on DragonX (symbol is always "DRAGONX"); kept for defensiveness.
+        ret.push_back(Pair("coin",(char *)(SMART_CHAIN_SYMBOL[0] == 0 ? "DRAGONX" : SMART_CHAIN_SYMBOL)));
         height = chainActive.LastTip()->GetHeight();
         if ( memcmp(&zeroes,&refpubkey,sizeof(refpubkey)) != 0 )
             ret.push_back(Pair("owner",refpubkey.GetHex()));
@@ -749,9 +743,6 @@ UniValue kvupdate(const UniValue& params, bool fHelp, const CPubKey& mypk)
         }
         if ( (opretlen= hush_opreturnscript(opretbuf,'K',keyvalue,coresize)) == 40 )
             opretlen++;
-        //for (i=0; i<opretlen; i++)
-        //    printf("%02x",opretbuf[i]);
-        //printf(" opretbuf keylen.%d valuesize.%d height.%d (%02x %02x %02x)\n",*(uint16_t *)&keyvalue[0],*(uint16_t *)&keyvalue[2],*(uint32_t *)&keyvalue[4],keyvalue[8],keyvalue[9],keyvalue[10]);
         EnsureWalletIsUnlocked();
         fee = hush_kvfee(flags,opretlen,keylen);
         ret.push_back(Pair("fee",(double)fee/COIN));
@@ -905,7 +896,7 @@ UniValue getreceivedbyaddress(const UniValue& params, bool fHelp, const CPubKey&
     // Bitcoin address
     CTxDestination dest = DecodeDestination(params[0].get_str());
     if (!IsValidDestination(dest)) {
-        throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid Hush address!");
+        throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid DragonX address!");
     }
     CScript scriptPubKey = GetScriptForDestination(dest);
     if (!IsMine(*pwalletMain, scriptPubKey)) {
@@ -1462,7 +1453,7 @@ UniValue sendmany(const UniValue& params, bool fHelp, const CPubKey& mypk)
             CScript tmpspk;
             tmpspk << ParseHex(name_) << OP_CHECKSIG;
             if ( !ExtractDestination(tmpspk, dest, true) )
-                throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, std::string("Invalid Hush address or pubkey: ") + name_);
+                throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, std::string("Invalid DragonX address or pubkey: ") + name_);
         }
 
         CScript scriptPubKey = GetScriptForDestination(dest);
@@ -1823,7 +1814,6 @@ void ListTransactions(const CWalletTx& wtx, const string& strAccount, int nMinDe
         BOOST_FOREACH(const COutputEntry& r, listReceived)
         {
             string account;
-            //fprintf(stderr,"recv iter %s\n",wtx.GetHash().GetHex().c_str());
             if (pwalletMain->mapAddressBook.count(r.destination))
                 account = pwalletMain->mapAddressBook[r.destination].name;
             if (fAllAccounts || (account == strAccount))
@@ -1972,9 +1962,8 @@ UniValue listtransactions(const UniValue& params, bool fHelp, const CPubKey& myp
         CWalletTx *const pwtx = (*it).second.first;
         if (pwtx != 0)
         {
-            //fprintf(stderr,"pwtx iter.%d %s\n",(int32_t)pwtx->nOrderPos,pwtx->GetHash().GetHex().c_str());
             ListTransactions(*pwtx, strAccount, 0, true, ret, filter);
-        } //else fprintf(stderr,"null pwtx\n");
+        }
         CAccountingEntry *const pacentry = (*it).second.second;
         if (pacentry != 0)
             AcentryToJSON(*pacentry, strAccount, ret);
@@ -2558,7 +2547,7 @@ UniValue encryptwallet(const UniValue& params, bool fHelp, const CPubKey& mypk)
     // slack space in .dat files; that is bad if the old data is
     // unencrypted private keys. So:
     StartShutdown();
-    return "wallet encrypted; Hush server stopping, restart to run with encrypted wallet. The keypool has been flushed, you need to make a new backup.";
+    return "wallet encrypted; DragonX server stopping, restart to run with encrypted wallet. The keypool has been flushed, you need to make a new backup.";
 }
 
 UniValue lockunspent(const UniValue& params, bool fHelp, const CPubKey& mypk)
@@ -2866,7 +2855,7 @@ UniValue listunspent(const UniValue& params, bool fHelp, const CPubKey& mypk)
             "    \"txid\" : \"txid\",          (string) the transaction id \n"
             "    \"vout\" : n,               (numeric) the vout value\n"
             "    \"generated\" : true|false  (boolean) true if txout is a coinbase transaction output\n"
-            "    \"address\" : \"address\",    (string) the Hush address\n"
+            "    \"address\" : \"address\",    (string) the DragonX address\n"
             "    \"account\" : \"account\",    (string) DEPRECATED. The associated account, or \"\" for the default account\n"
             "    \"scriptPubKey\" : \"key\",   (string) the script key\n"
             "    \"amount\" : x.xxx,         (numeric) the transaction amount in " + CURRENCY_UNIT + "\n"
@@ -2900,7 +2889,7 @@ UniValue listunspent(const UniValue& params, bool fHelp, const CPubKey& mypk)
             const UniValue& input = inputs[idx];
             CTxDestination dest = DecodeDestination(input.get_str());
             if (!IsValidDestination(dest)) {
-                throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, std::string("Invalid Hush address: ") + input.get_str());
+                throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, std::string("Invalid DragonX address: ") + input.get_str());
             }
             if (!destinations.insert(dest).second) {
                 throw JSONRPCError(RPC_INVALID_PARAMETER, std::string("Invalid parameter, duplicated address: ") + input.get_str());
@@ -2959,7 +2948,6 @@ UniValue listunspent(const UniValue& params, bool fHelp, const CPubKey& mypk)
             BlockMap::iterator it = mapBlockIndex.find(pcoinsTip->GetBestBlock());
             CBlockIndex *tipindex,*pindex = it->second;
             uint32_t locktime;
-            //fprintf(stderr,"nValue %.8f pindex.%p tipindex.%p locktime.%u txheight.%d pindexht.%d\n",(double)nValue/COIN,pindex,chainActive.LastTip(),locktime,txheight,pindex->GetHeight());
         }
         else if ( chainActive.LastTip() != 0 )
             txheight = (chainActive.LastTip()->GetHeight() - out.nDepth - 1);
@@ -3436,7 +3424,7 @@ UniValue z_listreceivedaddress(const UniValue& params, bool fHelp,const CPubKey&
         "This function is slow if no filters are given, use z_listreceivedbyaddress if you do not need filters."
         "\n"
         "\nArguments:\n"
-        "1. \"hushaddress:\"            (string, required) \n"
+        "1. \"dragonxaddress:\"         (string, required) \n"
         "\n"
         "2. \"Minimum Confimations:\"   (numeric, optional, default=0) \n"
         "\n"
@@ -3473,13 +3461,13 @@ UniValue z_listreceivedaddress(const UniValue& params, bool fHelp,const CPubKey&
         "   \"walletconflicts\": [conflicts],     An array of wallet conflicts\n"
         "   \"recieved\": {                       A list of receives from the transaction\n"
         "       \"transparentReceived\": [{           An Array of txos received for transparent addresses\n"
-        "           \"address\": \"hushaddress\",         (string) Hush transparent address (t-address)\n"
+        "           \"address\": \"dragonxaddress\",       (string) DragonX transparent address (t-address)\n"
         "           \"scriptPubKey\": \"script\",         (string) Script for the transparent address (t-address)\n"
         "           \"amount\": x.xxxx,                 (numeric) Value of output being received " + CURRENCY_UNIT + ", positive for receives\n"
         "           \"vout\": : n,                      (numeric) the vout value\n"
         "       }],\n"
         "       \"saplingReceived\": [{               An Array of utxos/notes received for sapling addresses\n"
-        "           \"address\": \"hushaddress\",         (string) Shielded address (z-address)\n"
+        "           \"address\": \"dragonxaddress\",       (string) Shielded address (z-address)\n"
         "           \"amount\": x.xxxx,                 (numeric) Value of output being received " + CURRENCY_UNIT + ", positive for receives\n"
         "           \"memo\": xxxxx,            (string) hexademical string representation of memo field\n"
         "           \"memoStr\" : \"memo\",             (string) Only returned if memo contains valid UTF-8 text.\n"
@@ -3612,12 +3600,12 @@ UniValue z_listsentbyaddress(const UniValue& params, bool fHelp,const CPubKey&)
   if (fHelp || params.size() > 5 || params.size() == 3)
       throw runtime_error(
         "z_listsentbyaddress\n"
-        "\nReturns decrypted Hush outputs sent to a single address.\n"
+        "\nReturns decrypted DragonX outputs sent to a single address.\n"
         "\n"
         "This function only returns information on addresses sent from wallet addresses with full spending keys."
         "\n"
         "\nArguments:\n"
-        "1. \"hushaddress:\"            (string, required) \n"
+        "1. \"dragonxaddress:\"         (string, required) \n"
         "\n"
         "2. \"Minimum Confimations:\"   (numeric, optional, default=0) \n"
         "\n"
@@ -3655,13 +3643,13 @@ UniValue z_listsentbyaddress(const UniValue& params, bool fHelp,const CPubKey&)
         "   \"sends\": {                          A list of outputs of where funds were sent to in the transaction,\n"
         "                                         only available if the transaction has valid sends (inputs) belonging to the wallet\n"
         "       \"transparentSends\": [{              An Array of spends (outputs) for transparent addresses of the receipient\n"
-        "           \"address\": \"hushaddress\",         (string) Hush transparent address (t-address)\n"
-        "           \"scriptPubKey\": \"script\",         (string) Script for the Hush transparent address (t-address)\n"
+        "           \"address\": \"dragonxaddress\",       (string) DragonX transparent address (t-address)\n"
+        "           \"scriptPubKey\": \"script\",         (string) Script for the DragonX transparent address (t-address)\n"
         "           \"amount\": x.xxxx,                 (numeric) Value of output being sent " + CURRENCY_UNIT + ", negative for sends\n"
         "           \"vout\": : n,                      (numeric) the vout value\n"
         "       }],\n"
         "       \"saplingSends\": [{                 An Array of spends (outputs) for sapling addresses\n"
-        "           \"address\": \"hushaddress\",         (string) Hush sapling address (z-address) of the receipient\n"
+        "           \"address\": \"dragonxaddress\",       (string) DragonX sapling address (z-address) of the receipient\n"
         "           \"amount\": x.xxxx,                 (numeric) Value of output being sent" + CURRENCY_UNIT + ", negative for sends\n"
         "           \"memo\": xxxxx,            (string) hexademical string representation of memo field\n"
         "           \"memoStr\" : \"memo\",             (string) Only returned if memo contains valid UTF-8 text.\n"
@@ -4290,7 +4278,7 @@ UniValue z_listunspent(const UniValue& params, bool fHelp, const CPubKey& mypk)
             string address = o.get_str();
             auto zaddr = DecodePaymentAddress(address);
             if (!IsValidPaymentAddress(zaddr)) {
-                throw JSONRPCError(RPC_INVALID_PARAMETER, string("Invalid parameter, address is not a valid Hush zaddr: ") + address);
+                throw JSONRPCError(RPC_INVALID_PARAMETER, string("Invalid parameter, address is not a valid DragonX zaddr: ") + address);
             }
             auto hasSpendingKey = boost::apply_visitor(HaveSpendingKeyForPaymentAddress(pwalletMain), zaddr);
             if (!fIncludeWatchonly && !hasSpendingKey) {
@@ -4675,7 +4663,6 @@ UniValue z_listreceivedbyaddress(const UniValue& params, bool fHelp, const CPubK
             obj.push_back(Pair("outindex", (int)entry.op.n));
             obj.push_back(Pair("rawconfirmations", entry.confirmations));
             auto wtx = pwalletMain->mapWallet.at(entry.op.hash); //.ToString());
-            //fprintf(stderr,"%s: txid=%s not found in wallet!\n", __func__, entry.op.hash.ToString().c_str());
             obj.push_back(Pair("time", wtx.GetTxTime()));
 
             obj.push_back(Pair("confirmations", dpowconfs));
@@ -4834,7 +4821,7 @@ UniValue z_gettotalbalance(const UniValue& params, bool fHelp, const CPubKey& my
     // getbalance and "getbalance * 1 true" should return the same number
     // but they don't because wtx.GetAmounts() does not handle tx where there are no outputs
     // pwalletMain->GetBalance() does not accept min depth parameter
-    // so we use our own method to get balance of utxos, lulzwtfbbq
+    // so we use our own method to get balance of utxos
     CAmount nBalance        = getBalanceTaddr("", nMinDepth, !fIncludeWatchonly);
     CAmount nPrivateBalance = getBalanceZaddr("", nMinDepth, !fIncludeWatchonly);
     CAmount nTotalBalance   = nBalance + nPrivateBalance;
@@ -4870,7 +4857,7 @@ UniValue z_viewtransaction(const UniValue& params, bool fHelp, const CPubKey& my
             "      \"rk\" : \"rk\",   (string) The rk\n"
             "      \"zkproof\" : \"zkproof\",   (string) Hexadecimal string representation of raw zksnark proof\n"
             "      \"outputPrev\" : n,               (numeric) the index of the output within the vShieldedOutput\n"
-            "      \"address\" : \"zcashaddress\",     (string) The Hush shielded address involved in the transaction\n"
+            "      \"address\" : \"dragonxaddress\",   (string) The DragonX shielded address involved in the transaction\n"
             "      \"value\" : x.xxx                 (numeric) The amount in " + CURRENCY_UNIT + "\n"
             "      \"valueZat\" : xxxx               (numeric) The amount in puposhis\n"
             "    }\n"
@@ -4880,7 +4867,7 @@ UniValue z_viewtransaction(const UniValue& params, bool fHelp, const CPubKey& my
             "    {\n"
             "      \"type\" : \"sapling\",      (string) The type of address\n"
             "      \"output\" : n,                   (numeric) the index of the output within the vShieldedOutput\n"
-            "      \"address\" : \"hushaddress\",     (string) The Hush address involved in the transaction\n"
+            "      \"address\" : \"dragonxaddress\",   (string) The DragonX address involved in the transaction\n"
             "      \"outgoing\" : true|false        (boolean) True if the output is not for an address in the wallet\n"
             "      \"value\" : x.xxx                 (numeric) The amount in " + CURRENCY_UNIT + "\n"
             "      \"valueZat\" : xxxx               (numeric) The amount in puposhis\n"
@@ -5120,62 +5107,12 @@ UniValue z_getoperationstatus_IMPL(const UniValue& params, bool fRemoveFinishedO
 #define CTXIN_SPEND_DUST_SIZE   148
 #define CTXOUT_REGULAR_SIZE     34
 
-UniValue z_sendmany(const UniValue& params, bool fHelp, const CPubKey& mypk)
+// Resolve the special fromaddress "z" (spend from any zaddr) to a concrete zaddr:
+// gather this wallet's Sapling notes, pick a random zaddr whose confirmed balance
+// covers the total outputs + fee. Extracted verbatim from z_sendmany (behavior-
+// preserving); throws JSONRPCError when no single zaddr has enough funds.
+static std::string SelectAnyZaddrSource(const UniValue& outputs, const UniValue& params)
 {
-    if (!EnsureWalletIsAvailable(fHelp))
-        return NullUniValue;
-
-    if (fHelp || params.size() < 2 || params.size() > 5)
-        throw runtime_error(
-            "z_sendmany \"fromaddress\" [{\"address\":... ,\"amount\":...},...] ( minconf ) ( fee ) (opreturn)\n"
-            "\nSend multiple times. Amounts are decimal numbers with at most 8 digits of precision."
-            "\nChange generated from a taddr flows to a new taddr address, while change generated from a zaddr returns to itself."
-            "\nWhen sending coinbase UTXOs to a zaddr, change is not allowed. The entire value of the UTXO(s) must be consumed."
-            + HelpRequiringPassphrase() + "\n"
-            "\nArguments:\n"
-            "1. \"fromaddress\"         (string, required) The taddr or zaddr to send the funds from. Use 'z' to spend from any zaddr.\n"
-            "2. \"amounts\"             (array, required) An array of json objects representing the amounts to send.\n"
-            "    [{\n"
-            "      \"address\":address  (string, required) The address is a taddr or zaddr\n"
-            "      \"amount\":amount    (numeric, required) The amount to send this address\n"
-            "      \"memo\":memo        (string, optional) If the address is a zaddr, raw data represented in hexadecimal string format\n"
-            "    }, ... ]\n"
-            "3. minconf               (numeric, optional, default=1) Only use funds confirmed at least this many times.\n"
-            "4. fee                   (numeric, optional, default="
-            + strprintf("%s", FormatMoney(ASYNC_RPC_OPERATION_DEFAULT_MINERS_FEE)) + ") The fee amount to attach to this transaction.\n"
-            "5. opreturn              (string, optional) Hex encoded data for OP_RETURN. Or a utf8 string prefixed with 'utf8:' which will be automatically converted to hex\n"
-            "\nResult:\n"
-            "\"operationid\"          (string) An operationid to pass to z_getoperationstatus to get the result of the operation.\n"
-            "\nExamples:\n"
-            + HelpExampleCli("z_sendmany", "\"RD6GgnrMpPaTSMn8vai6yiGA7mN4QGPV\" '[{\"address\": \"zs14d8tc0hl9q0vg5l28uec5vk6sk34fkj2n8s7jalvw5fxpy6v39yn4s2ga082lymrkjk0x2nqg37\" ,\"amount\": 5.0}]'")
-            + HelpExampleRpc("z_sendmany", "\"RD6GgnrMpPaTSMn8vai6yiGA7mN4QGPV\", [{\"address\": \"zs14d8tc0hl9q0vg5l28uec5vk6sk34fkj2n8s7jalvw5fxpy6v39yn4s2ga082lymrkjk0x2nqg37\" ,\"amount\": 5.0}]")
-            + HelpExampleCli("z_sendmany", "\"zs14d8tc0hl9q0vg5l28uec5vk6sk34fkj2n8s7jalvw5fxpy6v39yn4s2ga082lymrkjk0x2nqg37\" '[{\"address\": \"zs14d8tc0hl9q0vg5l28uec5vk6sk34fkj2n8s7jalvw5fxpy6v39yn4s2ga082lymrkjk0x2nqg37\" ,\"amount\": 3.14}]'")
-            + HelpExampleRpc("z_sendmany", "\"zs14d8tc0hl9q0vg5l28uec5vk6sk34fkj2n8s7jalvw5fxpy6v39yn4s2ga082lymrkjk0x2nqg37\", [{\"address\": \"zs14d8tc0hl9q0vg5l28uec5vk6sk34fkj2n8s7jalvw5fxpy6v39yn4s2ga082lymrkjk0x2nqg37\" ,\"amount\": 3.14}]")
-            + HelpExampleCli("z_sendmany", "\"zs14d8tc0hl9q0vg5l28uec5vk6sk34fkj2n8s7jalvw5fxpy6v39yn4s2ga082lymrkjk0x2nqg37\" '[{\"address\": \"zs14d8tc0hl9q0vg5l28uec5vk6sk34fkj2n8s7jalvw5fxpy6v39yn4s2ga082lymrkjk0x2nqg37\" ,\"amount\": 3.14}]' 1 0.0001 \"utf8: this will be converted to hex")
-            + HelpExampleRpc("z_sendmany", "\"zs14d8tc0hl9q0vg5l28uec5vk6sk34fkj2n8s7jalvw5fxpy6v39yn4s2ga082lymrkjk0x2nqg37\" '[{\"address\": \"zs14d8tc0hl9q0vg5l28uec5vk6sk34fkj2n8s7jalvw5fxpy6v39yn4s2ga082lymrkjk0x2nqg37\" ,\"amount\": 3.14}]' 1 0.0001 \"utf8: this will be converted to hex")
-        );
-
-    LOCK2(cs_main, pwalletMain->cs_wallet);
-
-    // Hilarious that Komodo commented this out, opening themselves up to metadata attackz, lulz
-    THROW_IF_SYNCING(HUSH_INSYNC);
-
-    // Check that the from address is valid.
-    auto fromaddress  = params[0].get_str();
-    bool fromTaddr    = false;
-    bool fromSapling  = false;
-    uint32_t branchId = CurrentEpochBranchId(chainActive.Height(), Params().GetConsensus());
-    UniValue outputs  = params[1].get_array();
-
-    if (outputs.size()==0)
-        throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, amounts array is empty.");
-
-    // TODO: implement special symbolic fromaddrs
-    // TODO: list of (zaddr,amount)
-    // "z" => spend from any zaddr
-    // "t" => spend from any taddr
-    // "*" => spend from any addr, zaddrs first
-    if(fromaddress == "z") {
     // TODO: refactor this and z_getbalances to use common code
     std::set<libzcash::PaymentAddress> zaddrs = {};
     std::set<libzcash::SaplingPaymentAddress> saplingzaddrs = {};
@@ -5245,61 +5182,21 @@ UniValue z_sendmany(const UniValue& params, bool fHelp, const CPubKey& mypk)
     // select a random address with enough confirmed balance
     auto nPotentials = vPotentialAddresses.size();
     if (nPotentials > 0) {
-            fprintf(stderr,"%s: Selecting one of %lu potential source zaddrs\n", __func__, nPotentials);
-            fromaddress = vPotentialAddresses[ GetRandInt(nPotentials) ];
-        } else {
+        LogPrintf("%s: Selecting one of %lu potential source zaddrs\n", __func__, nPotentials);
+        return vPotentialAddresses[ GetRandInt(nPotentials) ];
+    }
     // Automagic zaddr source selection failed, exit honorably
     throw JSONRPCError(RPC_INVALID_PARAMETER, "No single zaddr currently has enough funds to make that transaction, you may need to wait for confirmations.");
 }
-    } else {
-        CTxDestination taddr     = DecodeDestination(fromaddress);
-        fromTaddr = IsValidDestination(taddr);
-        if (!fromTaddr) {
-            auto res = DecodePaymentAddress(fromaddress);
-            if (!IsValidPaymentAddress(res, branchId)) {
-                // invalid
-                throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid from address, should be a taddr or zaddr.");
-            }
-
-            // Check that we have the spending key
-            if (!boost::apply_visitor(HaveSpendingKeyForPaymentAddress(pwalletMain), res)) {
-                 throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "From address does not belong to this node, zaddr spending key not found.");
-            }
-
-            // Remember whether this is a Sapling address
-            fromSapling = boost::get<libzcash::SaplingPaymentAddress>(&res) != nullptr;
-        }
-    }
-
-
-    // Recipients
-    std::vector<SendManyRecipient> taddrRecipients;
-    std::vector<SendManyRecipient> zaddrRecipients;
-    CAmount nTotalOut = 0;
-    // Optional OP_RETURN data
-    CScript opret;
-    UniValue opretValue;
-    if(params.size() == 5) {
-        opretValue = params[4].get_str();
-
-        // Support a prefix "utf8:" which allows giving utf8 text instead of hex
-        if(opretValue.get_str().substr(0,5) == "utf8:") {
-            auto str = opretValue.get_str().substr(5);
-            if (utf8::is_valid(str)) {
-                opretValue = HexStr(str);
-            } else {
-                throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid utf8 in opreturn");
-            }
-        }
-    }
-
-    bool containsSaplingOutput = false;
-
-    // Create the CScript representation of the OP_RETURN
-    if (!opretValue.isNull()) {
-        opret << OP_RETURN << ParseHex(opretValue.get_str().c_str());
-    }
 
+// Parse and validate the z_sendmany "outputs" array into taddr/zaddr recipient lists
+// (accumulating nTotalOut). Extracted verbatim from z_sendmany; throws JSONRPCError on
+// any malformed entry (unknown key, bad address, memo misuse/oversize, negative amount).
+static void ParseSendManyRecipients(const UniValue& outputs, uint32_t branchId,
+                                    std::vector<SendManyRecipient>& taddrRecipients,
+                                    std::vector<SendManyRecipient>& zaddrRecipients,
+                                    CAmount& nTotalOut)
+{
     for (const UniValue& o : outputs.getValues()) {
         if (!o.isObject())
             throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, expected object");
@@ -5361,6 +5258,116 @@ UniValue z_sendmany(const UniValue& params, bool fHelp, const CPubKey& mypk)
 
         nTotalOut += nAmount;
     }
+}
+
+UniValue z_sendmany(const UniValue& params, bool fHelp, const CPubKey& mypk)
+{
+    if (!EnsureWalletIsAvailable(fHelp))
+        return NullUniValue;
+
+    if (fHelp || params.size() < 2 || params.size() > 5)
+        throw runtime_error(
+            "z_sendmany \"fromaddress\" [{\"address\":... ,\"amount\":...},...] ( minconf ) ( fee ) (opreturn)\n"
+            "\nSend multiple times. Amounts are decimal numbers with at most 8 digits of precision."
+            "\nChange generated from a taddr flows to a new taddr address, while change generated from a zaddr returns to itself."
+            "\nWhen sending coinbase UTXOs to a zaddr, change is not allowed. The entire value of the UTXO(s) must be consumed."
+            + HelpRequiringPassphrase() + "\n"
+            "\nArguments:\n"
+            "1. \"fromaddress\"         (string, required) The taddr or zaddr to send the funds from. Use 'z' to spend from any zaddr.\n"
+            "2. \"amounts\"             (array, required) An array of json objects representing the amounts to send.\n"
+            "    [{\n"
+            "      \"address\":address  (string, required) The address is a taddr or zaddr\n"
+            "      \"amount\":amount    (numeric, required) The amount to send this address\n"
+            "      \"memo\":memo        (string, optional) If the address is a zaddr, raw data represented in hexadecimal string format\n"
+            "    }, ... ]\n"
+            "3. minconf               (numeric, optional, default=1) Only use funds confirmed at least this many times.\n"
+            "4. fee                   (numeric, optional, default="
+            + strprintf("%s", FormatMoney(ASYNC_RPC_OPERATION_DEFAULT_MINERS_FEE)) + ") The fee amount to attach to this transaction.\n"
+            "5. opreturn              (string, optional) Hex encoded data for OP_RETURN. Or a utf8 string prefixed with 'utf8:' which will be automatically converted to hex\n"
+            "\nResult:\n"
+            "\"operationid\"          (string) An operationid to pass to z_getoperationstatus to get the result of the operation.\n"
+            "\nExamples:\n"
+            + HelpExampleCli("z_sendmany", "\"RD6GgnrMpPaTSMn8vai6yiGA7mN4QGPV\" '[{\"address\": \"zs14d8tc0hl9q0vg5l28uec5vk6sk34fkj2n8s7jalvw5fxpy6v39yn4s2ga082lymrkjk0x2nqg37\" ,\"amount\": 5.0}]'")
+            + HelpExampleRpc("z_sendmany", "\"RD6GgnrMpPaTSMn8vai6yiGA7mN4QGPV\", [{\"address\": \"zs14d8tc0hl9q0vg5l28uec5vk6sk34fkj2n8s7jalvw5fxpy6v39yn4s2ga082lymrkjk0x2nqg37\" ,\"amount\": 5.0}]")
+            + HelpExampleCli("z_sendmany", "\"zs14d8tc0hl9q0vg5l28uec5vk6sk34fkj2n8s7jalvw5fxpy6v39yn4s2ga082lymrkjk0x2nqg37\" '[{\"address\": \"zs14d8tc0hl9q0vg5l28uec5vk6sk34fkj2n8s7jalvw5fxpy6v39yn4s2ga082lymrkjk0x2nqg37\" ,\"amount\": 3.14}]'")
+            + HelpExampleRpc("z_sendmany", "\"zs14d8tc0hl9q0vg5l28uec5vk6sk34fkj2n8s7jalvw5fxpy6v39yn4s2ga082lymrkjk0x2nqg37\", [{\"address\": \"zs14d8tc0hl9q0vg5l28uec5vk6sk34fkj2n8s7jalvw5fxpy6v39yn4s2ga082lymrkjk0x2nqg37\" ,\"amount\": 3.14}]")
+            + HelpExampleCli("z_sendmany", "\"zs14d8tc0hl9q0vg5l28uec5vk6sk34fkj2n8s7jalvw5fxpy6v39yn4s2ga082lymrkjk0x2nqg37\" '[{\"address\": \"zs14d8tc0hl9q0vg5l28uec5vk6sk34fkj2n8s7jalvw5fxpy6v39yn4s2ga082lymrkjk0x2nqg37\" ,\"amount\": 3.14}]' 1 0.0001 \"utf8: this will be converted to hex")
+            + HelpExampleRpc("z_sendmany", "\"zs14d8tc0hl9q0vg5l28uec5vk6sk34fkj2n8s7jalvw5fxpy6v39yn4s2ga082lymrkjk0x2nqg37\" '[{\"address\": \"zs14d8tc0hl9q0vg5l28uec5vk6sk34fkj2n8s7jalvw5fxpy6v39yn4s2ga082lymrkjk0x2nqg37\" ,\"amount\": 3.14}]' 1 0.0001 \"utf8: this will be converted to hex")
+        );
+
+    LOCK2(cs_main, pwalletMain->cs_wallet);
+
+    // Guard against building shielded transactions before the chain is fully synced;
+    // sending while behind the tip can leak metadata usable for linkability analysis.
+    THROW_IF_SYNCING(HUSH_INSYNC);
+
+    // Check that the from address is valid.
+    auto fromaddress  = params[0].get_str();
+    bool fromTaddr    = false;
+    bool fromSapling  = false;
+    uint32_t branchId = CurrentEpochBranchId(chainActive.Height(), Params().GetConsensus());
+    UniValue outputs  = params[1].get_array();
+
+    if (outputs.size()==0)
+        throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, amounts array is empty.");
+
+    // TODO: implement special symbolic fromaddrs
+    // TODO: list of (zaddr,amount)
+    // "z" => spend from any zaddr
+    // "t" => spend from any taddr
+    // "*" => spend from any addr, zaddrs first
+    if(fromaddress == "z") {
+        fromaddress = SelectAnyZaddrSource(outputs, params);
+    } else {
+        CTxDestination taddr     = DecodeDestination(fromaddress);
+        fromTaddr = IsValidDestination(taddr);
+        if (!fromTaddr) {
+            auto res = DecodePaymentAddress(fromaddress);
+            if (!IsValidPaymentAddress(res, branchId)) {
+                // invalid
+                throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid from address, should be a taddr or zaddr.");
+            }
+
+            // Check that we have the spending key
+            if (!boost::apply_visitor(HaveSpendingKeyForPaymentAddress(pwalletMain), res)) {
+                 throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "From address does not belong to this node, zaddr spending key not found.");
+            }
+
+            // Remember whether this is a Sapling address
+            fromSapling = boost::get<libzcash::SaplingPaymentAddress>(&res) != nullptr;
+        }
+    }
+
+
+    // Recipients
+    std::vector<SendManyRecipient> taddrRecipients;
+    std::vector<SendManyRecipient> zaddrRecipients;
+    CAmount nTotalOut = 0;
+    // Optional OP_RETURN data
+    CScript opret;
+    UniValue opretValue;
+    if(params.size() == 5) {
+        opretValue = params[4].get_str();
+
+        // Support a prefix "utf8:" which allows giving utf8 text instead of hex
+        if(opretValue.get_str().substr(0,5) == "utf8:") {
+            auto str = opretValue.get_str().substr(5);
+            if (utf8::is_valid(str)) {
+                opretValue = HexStr(str);
+            } else {
+                throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid utf8 in opreturn");
+            }
+        }
+    }
+
+    bool containsSaplingOutput = false;
+
+    // Create the CScript representation of the OP_RETURN
+    if (!opretValue.isNull()) {
+        opret << OP_RETURN << ParseHex(opretValue.get_str().c_str());
+    }
+
+    ParseSendManyRecipients(outputs, branchId, taddrRecipients, zaddrRecipients, nTotalOut);
 
     std::vector<SaplingNoteEntry> saplingEntries;
     // find all unspent and unlocked notes in this zaddr
@@ -5402,12 +5409,15 @@ UniValue z_sendmany(const UniValue& params, bool fHelp, const CPubKey& mypk)
    // SIETCH: Sprinkle our cave with some magic privacy zdust
    // End goal is to have this be as large as possible without slowing xtns down too much
    // A value of 7 will provide much stronger linkability privacy versus pre-Sietch operations
+   // DEFAULT_MIN_ZOUTS (7): default number of dummy z-outputs padded onto each z_sendmany.
+   // MAX_ZOUTS (50): upper bound for the operator-tunable -sietch-min-zouts arg.
+   // The effective floor is clamped to [3, MAX_ZOUTS] below.
 	unsigned int DEFAULT_MIN_ZOUTS=7;
 	unsigned int MAX_ZOUTS=50;
-	unsigned int MIN_ZOUTS=GetArg("--sietch-min-zouts", DEFAULT_MIN_ZOUTS);
+	unsigned int MIN_ZOUTS=GetArg("-sietch-min-zouts", DEFAULT_MIN_ZOUTS);
 
     if((MIN_ZOUTS<3) || (MIN_ZOUTS>MAX_ZOUTS)) {
-        fprintf(stderr,"%s: Sietch min zouts must be >= 3 and <= %d, setting to default value of %d\n", __FUNCTION__, MAX_ZOUTS, DEFAULT_MIN_ZOUTS );
+        LogPrintf("%s: Sietch min zouts must be >= 3 and <= %d, setting to default value of %d\n", __FUNCTION__, MAX_ZOUTS, DEFAULT_MIN_ZOUTS );
         MIN_ZOUTS=DEFAULT_MIN_ZOUTS;
     }
 
@@ -5471,9 +5481,8 @@ UniValue z_sendmany(const UniValue& params, bool fHelp, const CPubKey& mypk)
     txsize += GetSerializeSize(tx, SER_NETWORK, tx.nVersion);
     if (fromTaddr) {
         txsize += CTXIN_SPEND_DUST_SIZE;
-        //TODO: On HUSH since block 340k there can no longer be taddr change,
-        // (except for notary addresses)
-        // so we can likely make a better estimation of max txsize
+        // DragonX is ac_private=1 (fully shielded from genesis); transparent outputs are
+        // banned, so in practice there is no taddr change and this estimate is conservative.
         txsize += CTXOUT_REGULAR_SIZE;      // There will probably be taddr change
     }
     txsize += CTXOUT_REGULAR_SIZE * taddrRecipients.size();
@@ -5608,7 +5617,8 @@ UniValue z_shieldcoinbase(const UniValue& params, bool fHelp, const CPubKey& myp
 
     LOCK2(cs_main, pwalletMain->cs_wallet);
 
-    // Hilarious that Komodo commented this out, opening themselves up to metadata attackz, lulz
+    // Guard against building shielded transactions before the chain is fully synced;
+    // sending while behind the tip can leak metadata usable for linkability analysis.
     THROW_IF_SYNCING(HUSH_INSYNC);
 
     // Validate the from address
@@ -5854,7 +5864,8 @@ UniValue z_mergetoaddress(const UniValue& params, bool fHelp, const CPubKey& myp
 
     LOCK2(cs_main, pwalletMain->cs_wallet);
 
-    // Hilarious that Komodo commented this out, opening themselves up to metadata attackz, lulz
+    // Guard against building shielded transactions before the chain is fully synced;
+    // sending while behind the tip can leak metadata usable for linkability analysis.
     THROW_IF_SYNCING(HUSH_INSYNC);
 
     bool useAnyUTXO    = false;
@@ -6025,7 +6036,6 @@ UniValue z_mergetoaddress(const UniValue& params, bool fHelp, const CPubKey& myp
             CAmount nValue = out.tx->vout[out.i].nValue;
 
             if (maximum_utxo_size != 0) {
-                //fprintf(stderr, "utxo txid.%s vout.%i nValue.%li scriptpubkeylength.%i\n",out.tx->GetHash().ToString().c_str(),out.i,nValue,out.tx->vout[out.i].scriptPubKey.size());
                 if (nValue > maximum_utxo_size)
                     continue;
                 if (nValue == 10000 && out.tx->vout[out.i].scriptPubKey.size() == 35)
@@ -6087,7 +6097,6 @@ UniValue z_mergetoaddress(const UniValue& params, bool fHelp, const CPubKey& myp
     size_t numUtxos = utxoInputs.size();
     size_t numNotes = saplingNoteInputs.size();
 
-    //fprintf(stderr, "num utxos.%li\n", numUtxos);
     if (numUtxos < 2 && numNotes == 0) {
         throw JSONRPCError(RPC_WALLET_INSUFFICIENT_FUNDS, "Could not find any funds to merge.");
     }
@@ -6248,7 +6257,6 @@ int32_t hush_notaryvin(CMutableTransaction &txNew,uint8_t *notarypub33, void *pT
         script = (uint8_t *)&out.tx->vout[out.i].scriptPubKey[0];
         if ( out.tx->vout[out.i].scriptPubKey.size() != 35 || script[0] != 33 || script[34] != OP_CHECKSIG || memcmp(notarypub33,script+1,33) != 0 )
         {
-            //fprintf(stderr,"scriptsize.%d [0] %02x\n",(int32_t)out.tx->vout[out.i].scriptPubKey.size(),script[0]);
             continue;
         }
         utxovalue = (uint64_t)nValue;
@@ -6256,7 +6264,6 @@ int32_t hush_notaryvin(CMutableTransaction &txNew,uint8_t *notarypub33, void *pT
         utxotxid = out.tx->GetHash();
         utxovout = out.i;
         best_scriptPubKey = out.tx->vout[out.i].scriptPubKey;
-        //fprintf(stderr,"check %s/v%d %llu\n",(char *)utxotxid.GetHex().c_str(),utxovout,(long long)utxovalue);
 
         txNew.vin.resize(1);
         txNew.vout.resize((pTr!=0)+1);
@@ -6277,15 +6284,14 @@ int32_t hush_notaryvin(CMutableTransaction &txNew,uint8_t *notarypub33, void *pT
         CTransaction txNewConst(txNew);
         signSuccess = ProduceSignature(TransactionSignatureCreator(&keystore, &txNewConst, 0, utxovalue, SIGHASH_ALL), best_scriptPubKey, sigdata, consensusBranchId);
         if (!signSuccess)
-            fprintf(stderr,"notaryvin failed to create signature\n");
+            LogPrintf("notaryvin failed to create signature\n");
         else
         {
             UpdateTransaction(txNew,0,sigdata);
             ptr = (uint8_t *)&sigdata.scriptSig[0];
             siglen = sigdata.scriptSig.size();
             for (i=0; i<siglen; i++)
-                utxosig[i] = ptr[i];//, fprintf(stderr,"%02x",ptr[i]);
-            //fprintf(stderr," siglen.%d notaryvin %s/v%d\n",siglen,utxotxid.GetHex().c_str(),utxovout);
+                utxosig[i] = ptr[i];
             break;
         }
     }

src/wallet/wallet.cpp

@@ -578,7 +578,7 @@ void CWallet::ChainTip(const CBlockIndex *pindex,
 }
 
 void CWallet::RunSaplingSweep(int blockHeight) {
-    // Sapling is always active since height=1 of HUSH+HACs
+    // Sapling is always active since height=1 on DragonX
     // if (!NetworkUpgradeActive(blockHeight, Params().GetConsensus(), Consensus::UPGRADE_SAPLING)) {
     //     return;
     // }
@@ -657,7 +657,7 @@ void CWallet::RunSaplingSweep(int blockHeight) {
         q->popOperationForId(saplingSweepOperationId);
     }
     pendingSaplingSweepTxs.clear();
-    std::shared_ptr<AsyncRPCOperation> operation(new AsyncRPCOperation_sweep(blockHeight + 5));
+    std::shared_ptr<AsyncRPCOperation> operation(new AsyncRPCOperation_sweep(blockHeight + AUTO_OP_TARGET_HEIGHT_OFFSET));
     saplingSweepOperationId = operation->getId();
     if (!q->addOperation(operation)) {
         // Queue is closing (shutdown). Release the flag we just set, or it stays
@@ -669,7 +669,7 @@ void CWallet::RunSaplingSweep(int blockHeight) {
 }
 
 void CWallet::RunSaplingConsolidation(int blockHeight) {
-    // Sapling is always active on HUSH+HACs
+    // Sapling is always active on DragonX (activated at height=1)
     //if (!NetworkUpgradeActive(blockHeight, Params().GetConsensus(), Consensus::UPGRADE_SAPLING)) {
     //    return;
     //}
@@ -715,7 +715,7 @@ void CWallet::RunSaplingConsolidation(int blockHeight) {
         q->popOperationForId(saplingConsolidationOperationId);
     }
     pendingSaplingConsolidationTxs.clear();
-    std::shared_ptr<AsyncRPCOperation> operation(new AsyncRPCOperation_saplingconsolidation(blockHeight + 5));
+    std::shared_ptr<AsyncRPCOperation> operation(new AsyncRPCOperation_saplingconsolidation(blockHeight + AUTO_OP_TARGET_HEIGHT_OFFSET));
     saplingConsolidationOperationId = operation->getId();
     if (!q->addOperation(operation)) {
         // Queue is closing (shutdown). Release the flag we just set, or it stays
@@ -779,7 +779,7 @@ void CWallet::RunAutoShieldCoinbase(int blockHeight) {
         // running this every interval the map grew without bound.
         q->popOperationForId(saplingAutoShieldOperationId);
     }
-    std::shared_ptr<AsyncRPCOperation> operation(new AsyncRPCOperation_autoshieldcoinbase(blockHeight + 5));
+    std::shared_ptr<AsyncRPCOperation> operation(new AsyncRPCOperation_autoshieldcoinbase(blockHeight + AUTO_OP_TARGET_HEIGHT_OFFSET));
     saplingAutoShieldOperationId = operation->getId();
     if (!q->addOperation(operation)) {
         // Queue is closing (shutdown). Release the flag we just set, or it stays
@@ -1160,9 +1160,6 @@ int64_t CWallet::NullifierCount()
 {
     LOCK(cs_wallet);
     if(fZdebug) {
-        //fprintf(stderr,"%s:mapTxSaplingNullifers.size=%d\n",__FUNCTION__,(int)mapTxSaplingNullifiers.size() );
-        //fprintf(stderr,"%s:mempool.getNullifiers.size=%d\n",__FUNCTION__,(int)mempool.getNullifiers().size() );
-        //fprintf(stderr,"%s:cacheSaplingNullifiers.size=%d\n",__FUNCTION__,(int)pcoinsTip->getNullifiers().size() );
     }
     return pcoinsTip->getNullifiers().size();
 }
@@ -1709,7 +1706,6 @@ CWallet::TxItems CWallet::OrderedTxItems(std::list<CAccountingEntry>& acentries,
     {
         CWalletTx* wtx = &((*it).second);
         txOrdered.insert(make_pair(wtx->nOrderPos, TxPair(wtx, (CAccountingEntry*)0)));
-        //fprintf(stderr,"ordered iter.%d %s\n",(int32_t)wtx->nOrderPos,wtx->GetHash().GetHex().c_str());
     }
     acentries.clear();
     walletdb.ListAccountCreditDebit(strAccount, acentries);
@@ -2016,9 +2012,9 @@ bool CWallet::AddToWalletIfInvolvingMe(const CTransaction& tx, const CBlock* pbl
             vAllowListAddress = mapMultiArgs["-allowlistaddress"];
             if ( !vAllowListAddress.empty() )
             {
-                fprintf(stderr, "Activated Wallet Filter \n  Notary Address: %s \n  Adding allowlist address's:\n", NotaryAddress.c_str());
+                LogPrintf("Activated Wallet Filter \n  Notary Address: %s \n  Adding allowlist address's:\n", NotaryAddress.c_str());
                 for ( auto wladdr : vAllowListAddress )
-                    fprintf(stderr, "    %s\n", wladdr.c_str());
+                    LogPrintf("    %s\n", wladdr.c_str());
             }
         }
         if (fExisted || IsMine(tx) || IsFromMe(tx) || saplingNoteData.size() > 0) {
@@ -2036,7 +2032,6 @@ bool CWallet::AddToWalletIfInvolvingMe(const CTransaction& tx, const CBlock* pbl
                         {
                             if ( CBitcoinAddress(address).ToString() == wladdr )
                             {
-                                //fprintf(stderr, "We received from allowlisted address.%s\n", wladdr.c_str());
                                 numvinIsAllowList++;
                             }
                         }
@@ -2044,7 +2039,7 @@ bool CWallet::AddToWalletIfInvolvingMe(const CTransaction& tx, const CBlock* pbl
                 }
                 // Now we know if it was a tx sent to us, by either a allowlisted address, or ourself.
                 if ( numvinIsOurs != 0 )
-                    fprintf(stderr, "We sent from address: %s vins: %d\n",NotaryAddress.c_str(),numvinIsOurs);
+                    LogPrintf("We sent from address: %s vins: %d\n",NotaryAddress.c_str(),numvinIsOurs);
                 if ( numvinIsOurs == 0 && numvinIsAllowList == 0 )
                     return false;
             }
@@ -2385,7 +2380,7 @@ isminetype CWallet::IsMine(const CTransaction& tx, uint32_t voutNum)
 
         case TX_SCRIPTHASH:
             scriptID = CScriptID(uint160(vSolutions[0]));
-			//TODO: remove CLTV stuff not relevant to Hush
+			//TODO: evaluate whether this CLTV timelock handling is needed on DragonX
             if (this->GetCScript(scriptID, subscript))
             {
                 // if this is a CLTV, handle it differently
@@ -3047,14 +3042,12 @@ void CWalletTx::GetAmounts(list<COutputEntry>& listReceived,
             {
                 if ( oneshot++ > 1 )
                 {
-                    //fprintf(stderr,"skip change vout\n");
                     continue;
                 }
             }
         }
         else if (!(fIsMine & filter))
         {
-            //fprintf(stderr,"skip filtered vout %d %d\n",(int32_t)fIsMine,(int32_t)filter);
             continue;
         }
         // In either case, we need to get the destination address
@@ -3575,7 +3568,6 @@ void CWallet::ReacceptWalletTransactions()
             bool invalid = state.IsInvalid(nDoS);
 
             // log rejection and deletion
-            //printf("ERROR reaccepting wallet transaction %s to mempool, reason: %s, DoS: %d\n", wtx.GetHash().ToString().c_str(), state.GetRejectReason().c_str(), nDoS);
 
             if (!wtx.IsCoinBase() && invalid && nDoS > 0 && state.GetRejectReason() != "tx-overwinter-expired")
             {
@@ -3593,11 +3585,8 @@ void CWallet::ReacceptWalletTransactions()
 bool CWalletTx::RelayWalletTransaction()
 {
     int64_t nNow = GetTime();
-    //if(fZdebug)
-    //  LogPrintf("%s: now=%li\n",__func__,nNow);
     if ( pwallet == 0 )
     {
-        //fprintf(stderr,"unexpected null pwallet in RelayWalletTransaction\n");
         return(false);
     }
     assert(pwallet->GetBroadcastTransactions());
@@ -3835,7 +3824,7 @@ std::vector<uint256> CWallet::ResendWalletTransactionsBefore(int64_t nTime)
         // Do not relay expired transactions, to avoid other nodes banning us
         // Current code will not ban nodes relaying expired txs but older nodes will
         if (wtx.nExpiryHeight > 0 && wtx.nExpiryHeight < chainActive.LastTip()->GetHeight()) {
-            fprintf(stderr,"%s: ignoring expired tx %s with expiry %d at height %d\n", __func__, wtx.GetHash().ToString().c_str(), wtx.nExpiryHeight, chainActive.LastTip()->GetHeight() );
+            LogPrintf("%s: ignoring expired tx %s with expiry %d at height %d\n", __func__, wtx.GetHash().ToString().c_str(), wtx.nExpiryHeight, chainActive.LastTip()->GetHeight() );
             // TODO: expired detection doesn't seem to work right
             // append to list of txs to delete
             // vwtxh.push_back(wtx.GetHash());
@@ -4156,7 +4145,6 @@ bool CWallet::SelectCoinsMinConf(const CAmount& nTargetValue, int nConfMine, int
             nTotalLower += n;
             if ( nTotalLower > 4*nTargetValue + CENT )
             {
-                //fprintf(stderr,"why bother with all the utxo if we have double what is needed?\n");
                 break;
             }
         } else if (n < coinLowestLarger.first)
@@ -4359,7 +4347,7 @@ bool CWallet::FundTransaction(CMutableTransaction& tx, CAmount &nFeeRet, int& nC
 bool CWallet::CreateTransaction(const vector<CRecipient>& vecSend, CWalletTx& wtxNew, CReserveKey& reservekey, CAmount& nFeeRet,
                                 int& nChangePosRet, std::string& strFailReason, const CCoinControl* coinControl, bool sign)
 {
-    uint64_t interest2 = 0; CAmount nValue = 0; unsigned int nSubtractFeeFromAmount = 0;
+    CAmount nValue = 0; unsigned int nSubtractFeeFromAmount = 0;
     BOOST_FOREACH (const CRecipient& recipient, vecSend)
     {
         if (nValue < 0 || recipient.nAmount < 0)
@@ -4480,7 +4468,6 @@ bool CWallet::CreateTransaction(const vector<CRecipient>& vecSend, CWalletTx& wt
                 CAmount nValueIn = 0;
                 bool fOnlyCoinbaseCoins = false;
                 bool fNeedCoinbaseCoins = false;
-                interest2 = 0;
                 if (!SelectCoins(nTotalValue, setCoins, nValueIn, fOnlyCoinbaseCoins, fNeedCoinbaseCoins, coinControl))
                 {
                     if (fOnlyCoinbaseCoins && Params().GetConsensus().fCoinbaseMustBeProtected) {
@@ -4499,15 +4486,13 @@ bool CWallet::CreateTransaction(const vector<CRecipient>& vecSend, CWalletTx& wt
                     //reflecting an assumption the user would accept a bit more delay for
                     //a chance at a free transaction.
                     //But mempool inputs might still be in the mempool, so their age stays 0
-                    //fprintf(stderr,"nCredit %.8f interest %.8f\n",(double)nCredit/COIN,(double)pcoin.first->vout[pcoin.second].interest/COIN);
                     int age = pcoin.first->GetDepthInMainChain();
                     if (age != 0)
                         age += 1;
                     dPriority += (double)nCredit * age;
                 }
 
-                CAmount nChange = (nValueIn - nValue + interest2);
-//fprintf(stderr,"wallet change %.8f (%.8f - %.8f) interest2 %.8f total %.8f\n",(double)nChange/COIN,(double)nValueIn/COIN,(double)nValue/COIN,(double)interest2/COIN,(double)nTotalValue/COIN);
+                CAmount nChange = (nValueIn - nValue);
                 if (nSubtractFeeFromAmount == 0)
                     nChange -= nFeeRet;
 
@@ -4544,7 +4529,6 @@ bool CWallet::CreateTransaction(const vector<CRecipient>& vecSend, CWalletTx& wt
                         }
                         else
                         {
-                            //fprintf(stderr,"use notary pubkey\n");
                             scriptChange = CScript() << ParseHex(NOTARY_PUBKEY) << OP_CHECKSIG;
                         }
                     }
@@ -4596,7 +4580,7 @@ bool CWallet::CreateTransaction(const vector<CRecipient>& vecSend, CWalletTx& wt
                     txNew.vin.push_back(CTxIn(coin.first->GetHash(),coin.second,CScript(),
                                               std::numeric_limits<unsigned int>::max()-1));
 
-                // All Hush Arrakis Chains always have overwinter NU and so this option was never used
+                // DragonX always has the Overwinter NU active and so this option was never used
                 // Check mempooltxinputlimit to avoid creating a transaction which the local mempool rejects
                 // const size_t limit = 0; // (size_t)GetArg("-mempooltxinputlimit", 0);
                 //{
@@ -4719,7 +4703,8 @@ bool CWallet::CommitTransaction(CWalletTx& wtxNew, CReserveKey& reservekey)
 
             // Add tx to wallet, because if it has change it's also ours,
             // otherwise just for transaction history.
-            AddToWallet(wtxNew, false, pwalletdb);
+            if (!AddToWallet(wtxNew, false, pwalletdb))
+                LogPrintf("CommitTransaction(): Error: failed to persist wallet tx %s to disk; wallet may be out of sync with the ledger\n", wtxNew.GetHash().ToString());
 
             // Notify that old coins are spent
             set<CWalletTx*> setCoins;
@@ -4741,7 +4726,6 @@ bool CWallet::CommitTransaction(CWalletTx& wtxNew, CReserveKey& reservekey)
             // Broadcast
             if (!wtxNew.AcceptToMemoryPool(false))
             {
-                fprintf(stderr,"commit failed\n");
                 // This must not fail. The transaction has already been signed and recorded.
                 LogPrintf("CommitTransaction(): Error: Transaction not valid\n");
                 return false;
@@ -4791,7 +4775,7 @@ DBErrors CWallet::LoadWallet(bool& fFirstRunRet)
     fFirstRunRet = false;
     if ( 0 ) // doesnt help
     {
-        fprintf(stderr,"loading wallet %s %u\n",strWalletFile.c_str(),(uint32_t)time(NULL));
+        LogPrintf("loading wallet %s %u\n",strWalletFile.c_str(),(uint32_t)time(NULL));
         FILE *fp;
         if ( (fp= fopen(strWalletFile.c_str(),"rb")) != 0 )
         {
@@ -4799,9 +4783,7 @@ DBErrors CWallet::LoadWallet(bool& fFirstRunRet)
             fclose(fp);
         }
     }
-    //fprintf(stderr,"prefetched wallet %s %u\n",strWalletFile.c_str(),(uint32_t)time(NULL));
     DBErrors nLoadWalletRet = CWalletDB(strWalletFile,"cr+").LoadWallet(this);
-    //fprintf(stderr,"loaded wallet %s %u\n",strWalletFile.c_str(),(uint32_t)time(NULL));
     if (nLoadWalletRet == DB_NEED_REWRITE)
     {
         if (CDB::Rewrite(strWalletFile, "\x04pool"))
@@ -4986,7 +4968,6 @@ void CWallet::ReserveKeyFromKeyPool(int64_t& nIndex, CKeyPool& keypool)
         if (!HaveKey(keypool.vchPubKey.GetID()))
             throw runtime_error("ReserveKeyFromKeyPool(): unknown key in key pool");
         assert(keypool.vchPubKey.IsValid());
-        //LogPrintf("keypool reserve %d\n", nIndex);
     }
 }
 
@@ -5008,7 +4989,6 @@ void CWallet::ReturnKey(int64_t nIndex)
         LOCK(cs_wallet);
         setKeyPool.insert(nIndex);
     }
-    //LogPrintf("keypool return %d\n", nIndex);
 }
 
 bool CWallet::GetKeyFromPool(CPubKey& result)
@@ -5295,14 +5275,14 @@ void CWallet::LockNote(const SaplingOutPoint& output)
 {
     AssertLockHeld(cs_wallet);
     setLockedSaplingNotes.insert(output);
-    fprintf(stderr,"%s: locking note %s...\n", __func__, output.hash.ToString().substr(0,8).c_str() );
+    LogPrintf("%s: locking note %s...\n", __func__, output.hash.ToString().substr(0,8).c_str() );
 }
 
 void CWallet::UnlockNote(const SaplingOutPoint& output)
 {
     AssertLockHeld(cs_wallet);
     setLockedSaplingNotes.erase(output);
-    fprintf(stderr,"%s: unlocking note %s...\n", __func__, output.hash.ToString().substr(0,8).c_str() );
+    LogPrintf("%s: unlocking note %s...\n", __func__, output.hash.ToString().substr(0,8).c_str() );
 }
 
 void CWallet::UnlockAllSaplingNotes()
@@ -5542,7 +5522,6 @@ int CMerkleTx::GetBlocksToMaturity() const
     int32_t depth = GetDepthInMainChain();
     int32_t ut = UnlockTime(0);
     int32_t toMaturity = (ut - chainActive.Height()) < 0 ? 0 : ut - chainActive.Height();
-    //printf("depth.%i, unlockTime.%i, toMaturity.%i\n", depth, ut, toMaturity);
     ut = (COINBASE_MATURITY - depth) < 0 ? 0 : COINBASE_MATURITY - depth;
     return(ut < toMaturity ? toMaturity : ut);
 }
@@ -5749,7 +5728,7 @@ SpendingKeyAddResult AddSpendingKeyToWallet::operator()(const libzcash::SaplingE
             if (params.vUpgrades[Consensus::UPGRADE_SAPLING].nActivationHeight == Consensus::NetworkUpgrade::ALWAYS_ACTIVE) {
                 m_wallet->mapSaplingZKeyMetadata[ivk].nCreateTime = nTime;
             } else {
-		// TODO: set a better time for HUSH+HACs
+		// TODO: set a better time for DragonX
                 // 154051200 seconds from epoch is Friday, 26 October 2018 00:00:00 GMT - definitely before Sapling activates
                 m_wallet->mapSaplingZKeyMetadata[ivk].nCreateTime = std::max((int64_t) 154051200, nTime);
             }

src/wallet/wallet.h

@@ -100,6 +100,19 @@ static const unsigned int DEFAULT_TX_RETENTION_LASTTX = 200;
 //Amount of transactions to delete per run while syncing
 static const int MAX_DELETE_TX_SIZE = 50000;
 
+// Shared defaults for the automated wallet operations (sweep / consolidation /
+// auto-shield-coinbase). Fees are in puposhis (zats); intervals and offsets are
+// in blocks. Defined here so the CWallet scheduler fields below, init.cpp's
+// option parsing/help text, and the async ops reference one source of truth.
+static const CAmount DEFAULT_AUTOSHIELD_FEE       = 10000;
+static const int     DEFAULT_AUTOSHIELD_INTERVAL  = 25;
+static const int     MIN_AUTOSHIELD_INTERVAL      = 5;
+static const int     DEFAULT_AUTOSHIELD_MIN_UTXOS = 1;
+static const CAmount AUTOSHIELD_MIN_FEE           = 1000;      // comfortably above minRelayTxFee for a small tx
+static const CAmount AUTOSHIELD_MAX_FEE           = 10000000;  // 0.1 DRGX; no sane autoshield fee exceeds this
+static const int     AUTO_OP_TARGET_HEIGHT_OFFSET = 5;         // blocks of lookahead when scheduling an async op
+static const int     AUTO_OP_EXPIRY_DELTA         = 15;        // NU-straddle expiry window, shared by all three ops
+
 extern const char * DEFAULT_WALLET_DAT;
 
 class CBlockIndex;
@@ -810,10 +823,13 @@ public:
     bool fSweepExternalEnabled        = false;
     bool fSweepRunning                = false;
 
-    // Automatic coinbase shielding (t->z). Default ON but conditional: it is a
-    // silent no-op on nodes where it cannot act (no wallet, external
+    // Automatic coinbase shielding (t->z). The real default is computed in
+    // init.cpp: ON only for known-recoverable seed provenance (CREATED/RESTORED),
+    // conditional, and a silent no-op where it cannot act (no wallet, external
     // -mineraddress, non-mining, or locked wallet). See RunAutoShieldCoinbase.
-    bool fAutoShieldEnabled           = true;
+    // The member defaults false so a CWallet that skips that init path never
+    // auto-enables for provenance the gate would otherwise have rejected.
+    bool fAutoShieldEnabled           = false;
     bool fAutoShieldRunning           = false;
 
     std::atomic<bool> fAbortRescan{false};
@@ -844,11 +860,11 @@ public:
     std::string consolidationAddress  = "";
 
     int nextAutoShield                = 0;
-    int autoShieldInterval            = 25;
-    CAmount autoShieldFee             = 10000;
+    int autoShieldInterval            = DEFAULT_AUTOSHIELD_INTERVAL;
+    CAmount autoShieldFee             = DEFAULT_AUTOSHIELD_FEE;
     // Minimum matured coinbase UTXOs before a round fires, to avoid per-interval
     // fee churn on a single freshly-matured reward.
-    int autoShieldMinUtxos            = 1;
+    int autoShieldMinUtxos            = DEFAULT_AUTOSHIELD_MIN_UTXOS;
     // Configured destination z-addr override; also used to cache the resolved
     // wallet-owned destination so we keep reusing one address.
     std::string autoShieldAddress     = "";

src/wallet/walletdb.cpp

@@ -46,8 +46,6 @@ const int CHDChain::CURRENT_VERSION;
 using namespace std;
 
 static uint64_t nAccountingEntryNumber = 0;
-static list<uint256> deadTxns; 
-extern CBlockIndex *hush_blockindex(uint256 hash);
 
 //
 // CWalletDB
@@ -905,6 +903,12 @@ ReadKeyValue(CWallet* pwallet, CDataStream& ssKey, CDataStream& ssValue,
         {
             int64_t nOrigin = 0;
             ssValue >> nOrigin;
+            // Clamp an out-of-range value (corrupt or hand-edited wallet.dat) to
+            // UNKNOWN — the conservative origin that leaves autoshield OFF — rather
+            // than trusting it to claim a known-recoverable (CREATED/RESTORED) seed.
+            if (nOrigin < CWallet::HDSEED_ORIGIN_UNRECORDED || nOrigin > CWallet::HDSEED_ORIGIN_UNKNOWN) {
+                nOrigin = CWallet::HDSEED_ORIGIN_UNKNOWN;
+            }
             pwallet->hdSeedOrigin = (int)nOrigin;
         }
         else if (strType == "mnementropy")
@@ -1011,8 +1015,7 @@ DBErrors CWalletDB::LoadWallet(CWallet* pwallet)
                 {
                     // Leave other errors alone, if we try to fix them we might make things worse.
                     fNoncriticalErrors = true; // ... but do warn the user there is something wrong.
-                    // set rescan for any error that is not vin-empty on staking chains.
-                    if ( deadTxns.empty() && strType == "tx")
+                    if ( strType == "tx")
                         SoftSetBoolArg("-rescan", true);
                 }
             }
@@ -1028,29 +1031,6 @@ DBErrors CWalletDB::LoadWallet(CWallet* pwallet)
         result = DB_CORRUPT;
     }
 
-    if ( !deadTxns.empty() )
-    {
-        // staking chains with vin-empty error is a failed staking tx. 
-        // we remove then re add the tx here to stop needing a full rescan, which does not actually fix the problem.
-        int32_t reAdded = 0;
-        BOOST_FOREACH (uint256& hash, deadTxns) 
-        {
-            fprintf(stderr, "Removing possible orphaned staking transaction from wallet.%s\n", hash.ToString().c_str());
-            if (!EraseTx(hash))
-                fprintf(stderr, "could not delete tx.%s\n",hash.ToString().c_str());
-            uint256 blockhash; CTransaction tx; CBlockIndex* pindex;
-            if ( GetTransaction(hash,tx,blockhash,false) && (pindex= hush_blockindex(blockhash)) != 0 && chainActive.Contains(pindex) )
-            {
-                CWalletTx wtx(pwallet,tx);
-                pwallet->AddToWallet(wtx, true, NULL);
-                reAdded++;
-            }
-        }
-        fprintf(stderr, "Cleared %li orphaned staking transactions from wallet. Readded %i real transactions.\n",deadTxns.size(),reAdded);
-        fNoncriticalErrors = false;
-        deadTxns.clear();
-    }
-    
     if (fNoncriticalErrors && result == DB_LOAD_OK)
         result = DB_NONCRITICAL_ERROR;