diff --git a/src/coins.cpp b/src/coins.cpp
index 2b93c74c3a..9632e67f20 100644
--- a/src/coins.cpp
+++ b/src/coins.cpp
@@ -53,20 +53,16 @@ bool CCoins::Spend(int nPos) {
 
 
 bool CCoinsView::GetCoins(const uint256 &txid, CCoins &coins) const { return false; }
-bool CCoinsView::SetCoins(const uint256 &txid, const CCoins &coins) { return false; }
 bool CCoinsView::HaveCoins(const uint256 &txid) const { return false; }
 uint256 CCoinsView::GetBestBlock() const { return uint256(0); }
-bool CCoinsView::SetBestBlock(const uint256 &hashBlock) { return false; }
 bool CCoinsView::BatchWrite(CCoinsMap &mapCoins, const uint256 &hashBlock) { return false; }
 bool CCoinsView::GetStats(CCoinsStats &stats) const { return false; }
 
 
 CCoinsViewBacked::CCoinsViewBacked(CCoinsView &viewIn) : base(&viewIn) { }
 bool CCoinsViewBacked::GetCoins(const uint256 &txid, CCoins &coins) const { return base->GetCoins(txid, coins); }
-bool CCoinsViewBacked::SetCoins(const uint256 &txid, const CCoins &coins) { return base->SetCoins(txid, coins); }
 bool CCoinsViewBacked::HaveCoins(const uint256 &txid) const { return base->HaveCoins(txid); }
 uint256 CCoinsViewBacked::GetBestBlock() const { return base->GetBestBlock(); }
-bool CCoinsViewBacked::SetBestBlock(const uint256 &hashBlock) { return base->SetBestBlock(hashBlock); }
 void CCoinsViewBacked::SetBackend(CCoinsView &viewIn) { base = &viewIn; }
 bool CCoinsViewBacked::BatchWrite(CCoinsMap &mapCoins, const uint256 &hashBlock) { return base->BatchWrite(mapCoins, hashBlock); }
 bool CCoinsViewBacked::GetStats(CCoinsStats &stats) const { return base->GetStats(stats); }
@@ -124,11 +120,6 @@ const CCoins* CCoinsViewCache::AccessCoins(const uint256 &txid) const {
     }
 }
 
-bool CCoinsViewCache::SetCoins(const uint256 &txid, const CCoins &coins) {
-    cacheCoins[txid] = coins;
-    return true;
-}
-
 bool CCoinsViewCache::HaveCoins(const uint256 &txid) const {
     CCoinsMap::const_iterator it = FetchCoins(txid);
     // We're using vtx.empty() instead of IsPruned here for performance reasons,
@@ -144,9 +135,8 @@ uint256 CCoinsViewCache::GetBestBlock() const {
     return hashBlock;
 }
 
-bool CCoinsViewCache::SetBestBlock(const uint256 &hashBlockIn) {
+void CCoinsViewCache::SetBestBlock(const uint256 &hashBlockIn) {
     hashBlock = hashBlockIn;
-    return true;
 }
 
 bool CCoinsViewCache::BatchWrite(CCoinsMap &mapCoins, const uint256 &hashBlockIn) {
diff --git a/src/coins.h b/src/coins.h
index 62beea3c23..ce7a79740b 100644
--- a/src/coins.h
+++ b/src/coins.h
@@ -294,9 +294,6 @@ public:
     // Retrieve the CCoins (unspent transaction outputs) for a given txid
     virtual bool GetCoins(const uint256 &txid, CCoins &coins) const;
 
-    // Modify the CCoins for a given txid
-    virtual bool SetCoins(const uint256 &txid, const CCoins &coins);
-
     // Just check whether we have data for a given txid.
     // This may (but cannot always) return true for fully spent transactions
     virtual bool HaveCoins(const uint256 &txid) const;
@@ -304,10 +301,7 @@ public:
     // Retrieve the block hash whose state this CCoinsView currently represents
     virtual uint256 GetBestBlock() const;
 
-    // Modify the currently active block hash
-    virtual bool SetBestBlock(const uint256 &hashBlock);
-
-    // Do a bulk modification (multiple SetCoins + one SetBestBlock).
+    // Do a bulk modification (multiple CCoins changes + BestBlock change).
     // The passed mapCoins can be modified.
     virtual bool BatchWrite(CCoinsMap &mapCoins, const uint256 &hashBlock);
 
@@ -328,10 +322,8 @@ protected:
 public:
     CCoinsViewBacked(CCoinsView &viewIn);
     bool GetCoins(const uint256 &txid, CCoins &coins) const;
-    bool SetCoins(const uint256 &txid, const CCoins &coins);
     bool HaveCoins(const uint256 &txid) const;
     uint256 GetBestBlock() const;
-    bool SetBestBlock(const uint256 &hashBlock);
     void SetBackend(CCoinsView &viewIn);
     bool BatchWrite(CCoinsMap &mapCoins, const uint256 &hashBlock);
     bool GetStats(CCoinsStats &stats) const;
@@ -375,10 +367,9 @@ public:
 
     // Standard CCoinsView methods
     bool GetCoins(const uint256 &txid, CCoins &coins) const;
-    bool SetCoins(const uint256 &txid, const CCoins &coins);
     bool HaveCoins(const uint256 &txid) const;
     uint256 GetBestBlock() const;
-    bool SetBestBlock(const uint256 &hashBlock);
+    void SetBestBlock(const uint256 &hashBlock);
     bool BatchWrite(CCoinsMap &mapCoins, const uint256 &hashBlock);
 
     // Return a pointer to CCoins in the cache, or NULL if not found. This is
diff --git a/src/main.cpp b/src/main.cpp
index 5aed3a2528..af8810ebd6 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1753,9 +1753,7 @@ bool ConnectBlock(CBlock& block, CValidationState& state, CBlockIndex* pindex, C
             return state.Abort(_("Failed to write transaction index"));
 
     // add this block to the view's block chain
-    bool ret;
-    ret = view.SetBestBlock(pindex->GetBlockHash());
-    assert(ret);
+    view.SetBestBlock(pindex->GetBlockHash());
 
     int64_t nTime3 = GetTimeMicros(); nTimeIndex += nTime3 - nTime2;
     LogPrint("bench", "    - Index writing: %.2fms [%.2fs]\n", 0.001 * (nTime3 - nTime2), nTimeIndex * 0.000001);
diff --git a/src/test/script_P2SH_tests.cpp b/src/test/script_P2SH_tests.cpp
index e6cf00c2d0..645d3c6918 100644
--- a/src/test/script_P2SH_tests.cpp
+++ b/src/test/script_P2SH_tests.cpp
@@ -312,8 +312,7 @@ BOOST_AUTO_TEST_CASE(AreInputsStandard)
     txFrom.vout[6].scriptPubKey = GetScriptForDestination(twentySigops.GetID());
     txFrom.vout[6].nValue = 6000;
 
-
-    coins.SetCoins(txFrom.GetHash(), CCoins(txFrom, 0));
+    coins.ModifyCoins(txFrom.GetHash())->FromTx(txFrom, 0);
 
     CMutableTransaction txTo;
     txTo.vout.resize(1);
diff --git a/src/test/transaction_tests.cpp b/src/test/transaction_tests.cpp
index 41d8ee9f19..15c0034bfb 100644
--- a/src/test/transaction_tests.cpp
+++ b/src/test/transaction_tests.cpp
@@ -225,7 +225,7 @@ BOOST_AUTO_TEST_CASE(basic_transaction_tests)
 // paid to a TX_PUBKEYHASH.
 //
 static std::vector<CMutableTransaction>
-SetupDummyInputs(CBasicKeyStore& keystoreRet, CCoinsView & coinsRet)
+SetupDummyInputs(CBasicKeyStore& keystoreRet, CCoinsViewCache& coinsRet)
 {
     std::vector<CMutableTransaction> dummyTransactions;
     dummyTransactions.resize(2);
@@ -244,14 +244,14 @@ SetupDummyInputs(CBasicKeyStore& keystoreRet, CCoinsView & coinsRet)
     dummyTransactions[0].vout[0].scriptPubKey << key[0].GetPubKey() << OP_CHECKSIG;
     dummyTransactions[0].vout[1].nValue = 50*CENT;
     dummyTransactions[0].vout[1].scriptPubKey << key[1].GetPubKey() << OP_CHECKSIG;
-    coinsRet.SetCoins(dummyTransactions[0].GetHash(), CCoins(dummyTransactions[0], 0));
+    coinsRet.ModifyCoins(dummyTransactions[0].GetHash())->FromTx(dummyTransactions[0], 0);
 
     dummyTransactions[1].vout.resize(2);
     dummyTransactions[1].vout[0].nValue = 21*CENT;
     dummyTransactions[1].vout[0].scriptPubKey = GetScriptForDestination(key[2].GetPubKey().GetID());
     dummyTransactions[1].vout[1].nValue = 22*CENT;
     dummyTransactions[1].vout[1].scriptPubKey = GetScriptForDestination(key[3].GetPubKey().GetID());
-    coinsRet.SetCoins(dummyTransactions[1].GetHash(), CCoins(dummyTransactions[1], 0));
+    coinsRet.ModifyCoins(dummyTransactions[1].GetHash())->FromTx(dummyTransactions[1], 0);
 
     return dummyTransactions;
 }
diff --git a/src/txdb.cpp b/src/txdb.cpp
index 79838b6116..3b353ab624 100644
--- a/src/txdb.cpp
+++ b/src/txdb.cpp
@@ -33,12 +33,6 @@ bool CCoinsViewDB::GetCoins(const uint256 &txid, CCoins &coins) const {
     return db.Read(make_pair('c', txid), coins);
 }
 
-bool CCoinsViewDB::SetCoins(const uint256 &txid, const CCoins &coins) {
-    CLevelDBBatch batch;
-    BatchWriteCoins(batch, txid, coins);
-    return db.WriteBatch(batch);
-}
-
 bool CCoinsViewDB::HaveCoins(const uint256 &txid) const {
     return db.Exists(make_pair('c', txid));
 }
@@ -50,12 +44,6 @@ uint256 CCoinsViewDB::GetBestBlock() const {
     return hashBestChain;
 }
 
-bool CCoinsViewDB::SetBestBlock(const uint256 &hashBlock) {
-    CLevelDBBatch batch;
-    BatchWriteHashBestChain(batch, hashBlock);
-    return db.WriteBatch(batch);
-}
-
 bool CCoinsViewDB::BatchWrite(CCoinsMap &mapCoins, const uint256 &hashBlock) {
     LogPrint("coindb", "Committing %u changed transactions to coin database...\n", (unsigned int)mapCoins.size());
 
diff --git a/src/txdb.h b/src/txdb.h
index f0b6b9e1dd..8f2bd9af4d 100644
--- a/src/txdb.h
+++ b/src/txdb.h
@@ -33,10 +33,8 @@ public:
     CCoinsViewDB(size_t nCacheSize, bool fMemory = false, bool fWipe = false);
 
     bool GetCoins(const uint256 &txid, CCoins &coins) const;
-    bool SetCoins(const uint256 &txid, const CCoins &coins);
     bool HaveCoins(const uint256 &txid) const;
     uint256 GetBestBlock() const;
-    bool SetBestBlock(const uint256 &hashBlock);
     bool BatchWrite(CCoinsMap &mapCoins, const uint256 &hashBlock);
     bool GetStats(CCoinsStats &stats) const;
 };