Add HAC option -ac_minopreturnfee to change OP_RETURN fee per tx, regardless of tx size, default is 1 coin

src/hush_globals.h

@@ -51,6 +51,7 @@ std::string NOTARY_PUBKEY,ASSETCHAINS_NOTARIES,ASSETCHAINS_OVERRIDE_PUBKEY,DONAT
 uint8_t NOTARY_PUBKEY33[33],ASSETCHAINS_OVERRIDE_PUBKEY33[33],ASSETCHAINS_OVERRIDE_PUBKEYHASH[20],ASSETCHAINS_PUBLIC,ASSETCHAINS_PRIVATE,ASSETCHAINS_TXPOW,ASSETCHAINS_MARMARA;
 int8_t ASSETCHAINS_ADAPTIVEPOW;
 uint8_t ASSETCHAINS_BURN = 0;
+uint32_t ASSETCHAINS_MINOPRETURNFEE = 0;
 std::vector<uint8_t> Mineropret;
 std::vector<std::string> vAllowListAddress;
 char NOTARYADDRS[64][64];

src/hush_utils.h

@@ -1842,7 +1842,8 @@ void hush_args(char *argv0)
     Split(GetArg("-ac_nk",""), sizeof(ASSETCHAINS_NK)/sizeof(*ASSETCHAINS_NK), ASSETCHAINS_NK, 0);
 
     ASSETCHAINS_BURN         = GetArg("-ac_burn", 0);
-    
+    ASSETCHAINS_MINOPRETURNFEE = GetArg("-ac_minopreturnfee", 0);
+
     // -ac_ccactivateht=evalcode,height,evalcode,height,evalcode,height....
     Split(GetArg("-ac_ccactivateht",""), sizeof(ccEnablesHeight)/sizeof(*ccEnablesHeight), ccEnablesHeight, 0);
     // fill map with all eval codes and activation height of 0.
@@ -1858,7 +1859,7 @@ void hush_args(char *argv0)
             fprintf(stderr, "ac_ccactivateht: invalid evalcode.%i must be between 0 and 256.\n", ecode);
         else if ( ht > 0 )
         {
-            // update global map. 
+            // update global map.
             mapHeightEvalActivate[ecode] = ht;
             fprintf(stderr, "ac_ccactivateht: ecode.%i activates at height.%i\n", ecode, mapHeightEvalActivate[ecode]);
         }

src/init.cpp

@@ -604,6 +604,7 @@ std::string HelpMessage(HelpMessageMode mode)
     strUsage += HelpMessageOpt("-ac_blocktime", _("Block time in seconds, default is 60"));
     strUsage += HelpMessageOpt("-ac_beam", _("BEAM integration"));
     strUsage += HelpMessageOpt("-ac_burn", _("Allow sending funds to the transparent burn address when -ac_private=1"));
+    strUsage += HelpMessageOpt("-ac_minopreturnfee", _("OP_RETURN fee per tx, regardless of tx size, default is 1 coin"));
     strUsage += HelpMessageOpt("-ac_coda", _("CODA integration"));
     strUsage += HelpMessageOpt("-ac_decay", _("Percentage of block reward decrease at each halving"));
     strUsage += HelpMessageOpt("-ac_end", _("Block height at which block rewards will end"));

src/miner.cpp

@@ -118,6 +118,7 @@ public:
 
 extern int8_t ASSETCHAINS_ADAPTIVEPOW;
 extern uint32_t ASSETCHAINS_RANDOMX;
+extern uint32_t ASSETCHAINS_MINOPRETURNFEE;
 extern bool fRandomXDebug;
 extern std::string devtax_scriptpub_for_height(uint32_t nHeight);
 
@@ -521,6 +522,11 @@ CBlockTemplate* CreateNewBlock(CPubKey _pk,const CScript& _scriptPubKeyIn, int32
             // Opret spam limits
             CAmount opretMinFee = 1 * COIN;
 
+            // Set with -ac_minopreturnfee
+            if (ASSETCHAINS_MINOPRETURNFEE > 0) {
+               opretMinFee = ASSETCHAINS_MINOPRETURNFEE;
+            }
+
             {
                 bool fSpamTx = false;
                 unsigned int nTxSize = ::GetSerializeSize(tx, SER_NETWORK, PROTOCOL_VERSION);