diff --git a/src/coins.cpp b/src/coins.cpp
index eac89c030..c5647f883 100644
--- a/src/coins.cpp
+++ b/src/coins.cpp
@@ -622,6 +622,7 @@ CAmount CCoinsViewCache::GetValueIn(int32_t nHeight,int64_t *interestp,const CTr
 
 bool CCoinsViewCache::HaveJoinSplitRequirements(const CTransaction& tx) const
 {
+	/*
     boost::unordered_map<uint256, SproutMerkleTree, CCoinsKeyHasher> intermediates;
 
     BOOST_FOREACH(const JSDescription &joinsplit, tx.vjoinsplit)
@@ -650,13 +651,17 @@ bool CCoinsViewCache::HaveJoinSplitRequirements(const CTransaction& tx) const
 
         intermediates.insert(std::make_pair(tree.root(), tree));
     }
+	*/
 
     for (const SpendDescription &spendDescription : tx.vShieldedSpend) {
-        if (GetNullifier(spendDescription.nullifier, SAPLING)) // Prevent double spends
+        if (GetNullifier(spendDescription.nullifier, SAPLING)) { // Prevent double spends
+			fprintf(stderr,"%s: existing nullifier!",__FUNCTION__);
             return false;
+		}
 
         SaplingMerkleTree tree;
         if (!GetSaplingAnchorAt(spendDescription.anchor, tree)) {
+			fprintf(stderr,"%s: missing Sapling anchor!",__FUNCTION__);
             return false;
         }
     }
diff --git a/src/txmempool.cpp b/src/txmempool.cpp
index 84d416f96..ee5610a80 100644
--- a/src/txmempool.cpp
+++ b/src/txmempool.cpp
@@ -863,6 +863,7 @@ void CTxMemPool::NotifyRecentlyAdded()
         try {
             SyncWithWallets(tx, NULL);
         } catch (const boost::thread_interrupted&) {
+			fprintf(stderr,"%s: thread interrupted\n");
             throw;
         } catch (const std::exception& e) {
             PrintExceptionContinue(&e, "CTxMemPool::NotifyRecentlyAdded()");
diff --git a/src/wallet/rpcwallet.cpp b/src/wallet/rpcwallet.cpp
index a93e6b4d8..0de58079e 100644
--- a/src/wallet/rpcwallet.cpp
+++ b/src/wallet/rpcwallet.cpp
@@ -4533,6 +4533,18 @@ UniValue z_sendmany(const UniValue& params, bool fHelp)
 
         nTotalOut += nAmount;
     }
+	// Byrsa: Add some magic privacy zdust
+	unsigned int MIN_ZOUTS=7;
+	while (zaddrRecipients.size() < MIN_ZOUTS) {
+		int nAmount = 0;
+		string memo = "f600000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000";
+
+		// TODO: options for address: hardcoded or randomized, unspendable or valid
+		// We will send various amount=0 to this wallet if our amount of zdust
+		// is below threshold, otherwise to unspendable or fixed out-of-wallet zaddrs
+		string address = "zs1aq4xnrkjlnxx0zesqye7jz3dfrf3rjh7q5z6u8l6mwyqqaam3gx3j2fkqakp33v93yavq46j83q"; // duke donation zaddr
+	    zaddrRecipients.push_back( SendManyRecipient(address, nAmount, memo) );
+	}
 
     int nextBlockHeight = chainActive.Height() + 1;
     CMutableTransaction mtx;