diff --git a/src/bitcoinrpc.cpp b/src/bitcoinrpc.cpp
index 17189040b..fcf2482ee 100644
--- a/src/bitcoinrpc.cpp
+++ b/src/bitcoinrpc.cpp
@@ -12,6 +12,7 @@
 #include <boost/iostreams/concepts.hpp>
 #include <boost/iostreams/stream.hpp>
 #include <boost/algorithm/string.hpp>
+#include <boost/lexical_cast.hpp>
 #ifdef USE_SSL
 #include <boost/asio/ssl.hpp> 
 #include <boost/filesystem.hpp>
diff --git a/src/main.cpp b/src/main.cpp
index a7871fcc1..3a4e86512 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -516,7 +516,7 @@ bool CTransaction::RemoveFromMemoryPool()
 
 
 
-int CMerkleTx::GetDepthInMainChain(int& nHeightRet) const
+int CMerkleTx::GetDepthInMainChain(CBlockIndex* &pindexRet) const
 {
     if (hashBlock == 0 || nIndex == -1)
         return 0;
@@ -537,7 +537,7 @@ int CMerkleTx::GetDepthInMainChain(int& nHeightRet) const
         fMerkleVerified = true;
     }
 
-    nHeightRet = pindex->nHeight;
+    pindexRet = pindex;
     return pindexBest->nHeight - pindex->nHeight + 1;
 }
 
diff --git a/src/main.h b/src/main.h
index 3870cee86..93528cdb2 100644
--- a/src/main.h
+++ b/src/main.h
@@ -695,8 +695,8 @@ public:
 
 
     int SetMerkleBranch(const CBlock* pblock=NULL);
-    int GetDepthInMainChain(int& nHeightRet) const;
-    int GetDepthInMainChain() const { int nHeight; return GetDepthInMainChain(nHeight); }
+    int GetDepthInMainChain(CBlockIndex* &pindexRet) const;
+    int GetDepthInMainChain() const { CBlockIndex *pindexRet; return GetDepthInMainChain(pindexRet); }
     bool IsInMainChain() const { return GetDepthInMainChain() > 0; }
     int GetBlocksToMaturity() const;
     bool AcceptToMemoryPool(CTxDB& txdb, bool fCheckInputs=true);
@@ -758,6 +758,7 @@ public:
         return !(a == b);
     }
     int GetDepthInMainChain() const;
+ 
 };
 
 
@@ -1263,6 +1264,11 @@ public:
             Set((*mi).second);
     }
 
+    CBlockLocator(const std::vector<uint256>& vHaveIn)
+    {
+        vHave = vHaveIn;
+    }
+
     IMPLEMENT_SERIALIZE
     (
         if (!(nType & SER_GETHASH))
diff --git a/src/wallet.cpp b/src/wallet.cpp
index c451186d9..f9157e01d 100644
--- a/src/wallet.cpp
+++ b/src/wallet.cpp
@@ -299,7 +299,7 @@ bool CWallet::AddToWallet(const CWalletTx& wtxIn)
 // Add a transaction to the wallet, or update it.
 // pblock is optional, but should be provided if the transaction is known to be in a block.
 // If fUpdate is true, existing transactions will be updated.
-bool CWallet::AddToWalletIfInvolvingMe(const CTransaction& tx, const CBlock* pblock, bool fUpdate)
+bool CWallet::AddToWalletIfInvolvingMe(const CTransaction& tx, const CBlock* pblock, bool fUpdate, bool fFindBlock)
 {
     uint256 hash = tx.GetHash();
     CRITICAL_BLOCK(cs_wallet)
@@ -586,6 +586,15 @@ int CWallet::ScanForWalletTransactions(CBlockIndex* pindexStart, bool fUpdate)
     return ret;
 }
 
+int CWallet::ScanForWalletTransaction(const uint256& hashTx)
+{
+    CTransaction tx;
+    tx.ReadFromDisk(COutPoint(hashTx, 0));
+    if (AddToWalletIfInvolvingMe(tx, NULL, true, true))
+        return 1;
+    return 0;
+}
+
 void CWallet::ReacceptWalletTransactions()
 {
     CTxDB txdb("r");
@@ -1325,6 +1334,22 @@ void CWallet::ReserveKeyFromKeyPool(int64& nIndex, CKeyPool& keypool)
     }
 }
 
+int64 CWallet::AddReserveKey(const CKeyPool& keypool)
+{
+    CRITICAL_BLOCK(cs_main)
+    CRITICAL_BLOCK(cs_wallet)
+    {
+        CWalletDB walletdb(strWalletFile);
+
+        int64 nIndex = 1 + *(--setKeyPool.end());
+        if (!walletdb.WritePool(nIndex, keypool))
+            throw runtime_error("AddReserveKey() : writing added key failed");
+        setKeyPool.insert(nIndex);
+        return nIndex;
+    }
+    return -1;
+}
+
 void CWallet::KeepKey(int64 nIndex)
 {
     // Remove from key pool
@@ -1413,3 +1438,22 @@ void CReserveKey::ReturnKey()
     vchPubKey.clear();
 }
 
+void CWallet::GetAllReserveAddresses(set<CBitcoinAddress>& setAddress)
+{
+    setAddress.clear();
+
+    CWalletDB walletdb(strWalletFile);
+
+    CRITICAL_BLOCK(cs_main)
+    BOOST_FOREACH(const int64& id, setKeyPool)
+    {
+        CKeyPool keypool;
+        if (!walletdb.ReadPool(id, keypool))
+            throw runtime_error("GetAllReserveKeyHashes() : read failed");
+        CBitcoinAddress address(keypool.vchPubKey);
+        assert(!keypool.vchPubKey.empty());
+        if (!HaveKey(address))
+            throw runtime_error("GetAllReserveKeyHashes() : unknown key in key pool");
+        setAddress.insert(address);
+    }
+}
diff --git a/src/wallet.h b/src/wallet.h
index e1c39a6f3..95537be63 100644
--- a/src/wallet.h
+++ b/src/wallet.h
@@ -75,10 +75,11 @@ public:
     bool EncryptWallet(const SecureString& strWalletPassphrase);
 
     bool AddToWallet(const CWalletTx& wtxIn);
-    bool AddToWalletIfInvolvingMe(const CTransaction& tx, const CBlock* pblock, bool fUpdate = false);
+    bool AddToWalletIfInvolvingMe(const CTransaction& tx, const CBlock* pblock, bool fUpdate = false, bool fFindBlock = false);
     bool EraseFromWallet(uint256 hash);
     void WalletUpdateSpent(const CTransaction& prevout);
     int ScanForWalletTransactions(CBlockIndex* pindexStart, bool fUpdate = false);
+    int ScanForWalletTransaction(const uint256& hashTx);
     void ReacceptWalletTransactions();
     void ResendWalletTransactions();
     int64 GetBalance() const;
@@ -92,11 +93,13 @@ public:
 
     bool NewKeyPool();
     bool TopUpKeyPool();
+    int64 AddReserveKey(const CKeyPool& keypool);
     void ReserveKeyFromKeyPool(int64& nIndex, CKeyPool& keypool);
     void KeepKey(int64 nIndex);
     void ReturnKey(int64 nIndex);
     bool GetKeyFromPool(std::vector<unsigned char> &key, bool fAllowReuse=true);
     int64 GetOldestKeyPoolTime();
+    void GetAllReserveAddresses(std::set<CBitcoinAddress>& setAddress);
 
     bool IsMine(const CTxIn& txin) const;
     int64 GetDebit(const CTxIn& txin) const;