diff -uNr a/bitcoin/src/bitcoinrpc.cpp b/bitcoin/src/bitcoinrpc.cpp
--- a/bitcoin/src/bitcoinrpc.cpp a71655bcd21408123e7be15f91803707bafca212787544d3e160855c170d596029847dc35ecd0f4dbe10f8e412bee114fba803d4e369c980d06691373106c18d
+++ b/bitcoin/src/bitcoinrpc.cpp 12aaa6edce4f59b929ca6fd4c714e1be798b42c2293934d0861ee5cb300cc60d0320cbc5f4550fd7ed16af793e48b6dd84eb762e57ea458d93386cfcc0d45a50
@@ -1851,6 +1851,50 @@
     return false;
 }
 
+Value sendrawtransaction(const Array& params, bool fHelp)
+{
+    if (fHelp || params.size() < 1 || params.size() > 1)
+        throw runtime_error(
+            "sendrawtransaction <hex string>\n"
+            "Submits raw transaction (serialized, hex-encoded) to local node and network.");
+
+    vector<unsigned char> txData(ParseHex(params[0].get_str()));
+    CDataStream ssData(txData, SER_NETWORK, VERSION);
+    CTransaction tx;
+
+    try {
+        ssData >> tx;
+    }
+    catch (std::exception &e) {
+        throw JSONRPCError(-22, "tx decode failed");
+    }
+    
+    CTxDB txdb("r");
+    uint256 txHash = tx.GetHash();
+    uint256 hashBlock = 0;
+
+    if (TransactionSeen(txHash, hashBlock))
+    {
+        throw JSONRPCError(-5, string("tx already ") +
+            (hashBlock != 0 ?
+                string("included in block ") + hashBlock.ToString() :
+                "in memory pool"));
+    }
+
+    bool fMissingInputs = false;
+
+    if (!tx.AcceptToMemoryPool(txdb, true, &fMissingInputs) || fMissingInputs)
+    {
+        throw JSONRPCError(-22, string("tx rejected") +
+            (fMissingInputs ? ", missing inputs" : ""));
+    } 
+
+    SyncWithWallets(tx, NULL, true);
+    CInv inv(MSG_TX, txHash);
+    RelayMessage(inv, tx);
+
+    return txHash.GetHex();
+}
 
 Value eatblock(const Array& params, bool fHelp)
 {
@@ -1922,6 +1966,7 @@
     make_pair("settxfee",               &settxfee),
     make_pair("getmemorypool",          &getmemorypool),
     make_pair("listsinceblock",        &listsinceblock),
+    make_pair("sendrawtransaction",     &sendrawtransaction),
     make_pair("dumpblock",              &dumpblock),
     make_pair("eatblock",               &eatblock),
 };
diff -uNr a/bitcoin/src/main.cpp b/bitcoin/src/main.cpp
--- a/bitcoin/src/main.cpp 0ccb0c29c0a3217d57f9bc72d87b497e64116a9f79e69277408750ee3dc95738ce52a70afece7a1054314100d84f93f6525ab514b8abd8ce78ab8ebd50e599a2
+++ b/bitcoin/src/main.cpp 738ea5d28c72b586790716c124d219b8b132c5224ce07cc3b47eab4495e2c9009eae1a7d7fa3faaa24de465d5a46201dc1c4a468ab5a891cb59811d328b82084
@@ -98,6 +98,28 @@
     return false;
 }
 
+// return wether a given transaction is found on mempool or already included in a block
+bool TransactionSeen(const uint256 &hash, uint256 &hashBlock)
+{
+    CRITICAL_BLOCK(cs_mapTransactions)
+        if (mapTransactions.count(hash))
+            return true; 
+
+    CTransaction tx;
+    CTxDB txdb("r");
+    CTxIndex txindex;
+
+    if (tx.ReadFromDisk(txdb, COutPoint(hash, 0), txindex))
+    {
+        CBlock block;
+        if (block.ReadFromDisk(txindex.pos.nFile, txindex.pos.nBlockPos, false))
+            hashBlock = block.GetHash();
+        return true;
+    }
+
+    return false;
+}
+
 // erases transaction with the given hash from all wallets
 void static EraseFromWallets(uint256 hash)
 {
@@ -106,7 +128,7 @@
 }
 
 // make sure all wallets know about the given transaction, in the given block
-void static SyncWithWallets(const CTransaction& tx, const CBlock* pblock = NULL, bool fUpdate = false)
+void SyncWithWallets(const CTransaction& tx, const CBlock* pblock, bool fUpdate)
 {
     BOOST_FOREACH(CWallet* pwallet, setpwalletRegistered)
         pwallet->AddToWalletIfInvolvingMe(tx, pblock, fUpdate);
diff -uNr a/bitcoin/src/main.h b/bitcoin/src/main.h
--- a/bitcoin/src/main.h ff2bf8f8147dd8df5e1ef1bcea9b0159d3f83c1e30befef56415b99305aa99161ac1c05efb48be87a383ffb6d621fd3761bfb3e4952ca244a6e1398ca3c71dc6
+++ b/bitcoin/src/main.h 854e85a8217f8386fa7ec13775fdf7271a41a0132816f1a64acd40904b4b8300491dd368a26648afb11af019f0bdcc535ca327c19eaca698803f3afdd57b76d8
@@ -79,6 +79,8 @@
 
 void RegisterWallet(CWallet* pwalletIn);
 void UnregisterWallet(CWallet* pwalletIn);
+void SyncWithWallets(const CTransaction& tx, const CBlock* pblock = NULL, bool fUpdate = false);
+bool TransactionSeen(const uint256 &hash, uint256 &hashBlock);
 bool ProcessBlock(CNode* pfrom, CBlock* pblock);
 bool CheckDiskSpace(uint64 nAdditionalBytes=0);
 FILE* OpenBlockFile(unsigned int nFile, unsigned int nBlockPos, const char* pszMode="rb");