diff --git a/src/coins.h b/src/coins.h
index 785019410b536..bb37fe31ace0d 100644
--- a/src/coins.h
+++ b/src/coins.h
@@ -185,7 +185,6 @@ class CCoinsViewCursor
 
     virtual bool GetKey(COutPoint& key) const = 0;
     virtual bool GetValue(Coin& coin) const = 0;
-    /* Don't care about GetKeySize here */
     virtual unsigned int GetValueSize() const = 0;
 
     virtual bool Valid() const = 0;
diff --git a/src/dbwrapper.h b/src/dbwrapper.h
index 033762b8201cd..30a561df67a65 100644
--- a/src/dbwrapper.h
+++ b/src/dbwrapper.h
@@ -173,11 +173,6 @@ class CDBIterator
         return CDataStream(slKey.data(), slKey.data() + slKey.size(), SER_DISK, CLIENT_VERSION);
     }
 
-    unsigned int GetKeySize()
-    {
-        return piter->key().size();
-    }
-
     template<typename V> bool GetValue(V& value)
     {
         leveldb::Slice slValue = piter->value();
@@ -487,18 +482,6 @@ class CDBTransactionIterator
         }
     }
 
-    unsigned int GetKeySize()
-    {
-        if (!Valid()) {
-            return 0;
-        }
-        if (curIsParent) {
-            return parentIt->GetKeySize();
-        } else {
-            return transactionIt->first.vKey.size();
-        }
-    }
-
     template<typename V>
     bool GetValue(V& value)
     {
diff --git a/src/httpserver.cpp b/src/httpserver.cpp
index de716e97691ba..65418238a6844 100644
--- a/src/httpserver.cpp
+++ b/src/httpserver.cpp
@@ -125,13 +125,6 @@ class WorkQueue
         running = false;
         cond.notify_all();
     }
-
-    /** Return current depth of queue */
-    size_t Depth()
-    {
-        std::unique_lock<std::mutex> lock(cs);
-        return queue.size();
-    }
 };
 
 struct HTTPPathHandler
diff --git a/src/key.cpp b/src/key.cpp
index 7dd4b9b1b7f4f..afd533c9667dd 100644
--- a/src/key.cpp
+++ b/src/key.cpp
@@ -164,21 +164,10 @@ void CKey::MakeNewKey(bool fCompressedIn)
     fCompressed = fCompressedIn;
 }
 
-bool CKey::SetPrivKey(const CPrivKey& privkey, bool fCompressedIn)
-{
-    if (!ec_privkey_import_der(secp256k1_context_sign, (unsigned char*)begin(), &privkey[0], privkey.size()))
-        return false;
-    fCompressed = fCompressedIn;
-    fValid = true;
-    return true;
-}
-
 uint256 CKey::GetPrivKey_256()
 {
     void* key = keydata.data();
-    uint256* key_256 = (uint256*)key;
-
-    return *key_256;
+    return *(uint256*)key;
 }
 
 CPrivKey CKey::GetPrivKey() const
@@ -198,8 +187,8 @@ CPubKey CKey::GetPubKey() const
 {
     assert(fValid);
     secp256k1_pubkey pubkey;
+    size_t clen = CPubKey::PUBLIC_KEY_SIZE;
     CPubKey result;
-    size_t clen = 65;
     int ret = secp256k1_ec_pubkey_create(secp256k1_context_sign, &pubkey, begin());
     assert(ret);
     secp256k1_ec_pubkey_serialize(secp256k1_context_sign, (unsigned char*)result.begin(), &clen, &pubkey, fCompressed ? SECP256K1_EC_COMPRESSED : SECP256K1_EC_UNCOMPRESSED);
@@ -289,13 +278,13 @@ bool CKey::Derive(CKey& keyChild, ChainCode &ccChild, unsigned int nChild, const
     return ret;
 }
 
-bool CExtKey::Derive(CExtKey& out, unsigned int nChild) const
+bool CExtKey::Derive(CExtKey& out, unsigned int _nChild) const
 {
     out.nDepth = nDepth + 1;
     CKeyID id = key.GetPubKey().GetID();
     memcpy(&out.vchFingerprint[0], &id, 4);
-    out.nChild = nChild;
-    return key.Derive(out.key, out.chaincode, nChild, chaincode);
+    out.nChild = _nChild;
+    return key.Derive(out.key, out.chaincode, _nChild, chaincode);
 }
 
 void CExtKey::SetSeed(const unsigned char* seed, unsigned int nSeedLen)
diff --git a/src/key.h b/src/key.h
index 9ee98a159704e..8f54d3111e351 100644
--- a/src/key.h
+++ b/src/key.h
@@ -97,9 +97,6 @@ class CKey
     //! Check whether the public key corresponding to this private key is (to be) compressed.
     bool IsCompressed() const { return fCompressed; }
 
-    //! Initialize from a CPrivKey (serialized secp256k1 private key data).
-    bool SetPrivKey(const CPrivKey& vchPrivKey, bool fCompressed);
-
     //! Generate a new private key using a cryptographic PRNG.
     void MakeNewKey(bool fCompressed);
 
diff --git a/src/pivx-tx.cpp b/src/pivx-tx.cpp
index ff4b25bb3c5bb..54e80b2f37628 100644
--- a/src/pivx-tx.cpp
+++ b/src/pivx-tx.cpp
@@ -412,13 +412,6 @@ static bool findSighashFlags(int& flags, const std::string& flagStr)
     return false;
 }
 
-uint256 ParseHashUO(std::map<std::string, UniValue>& o, std::string strKey)
-{
-    if (!o.count(strKey))
-        return UINT256_ZERO;
-    return ParseHashUV(o[strKey], strKey);
-}
-
 static inline int64_t roundint64(double d)
 {
     return (int64_t)(d > 0 ? d + 0.5 : d - 0.5);
@@ -437,15 +430,6 @@ static CAmount AmountFromValue(const UniValue& value)
     return nAmount;
 }
 
-std::vector<unsigned char> ParseHexUO(std::map<std::string, UniValue>& o, std::string strKey)
-{
-    if (!o.count(strKey)) {
-        std::vector<unsigned char> emptyVec;
-        return emptyVec;
-    }
-    return ParseHexUV(o[strKey], strKey);
-}
-
 static void MutateTxSign(CMutableTransaction& tx, const std::string& flagStr)
 {
     int nHashType = SIGHASH_ALL;
diff --git a/src/rpc/server.h b/src/rpc/server.h
index 1353635dabd21..c026f9df45b18 100644
--- a/src/rpc/server.h
+++ b/src/rpc/server.h
@@ -25,7 +25,6 @@ namespace RPCServer
     void OnStarted(std::function<void ()> slot);
     void OnStopped(std::function<void ()> slot);
     void OnPreCommand(std::function<void (const CRPCCommand&)> slot);
-    void OnPostCommand(std::function<void (const CRPCCommand&)> slot);
 }
 
 class CBlockIndex;
diff --git a/src/test/key_tests.cpp b/src/test/key_tests.cpp
index a7c8c3739ed84..6ca8d4e6cda43 100644
--- a/src/test/key_tests.cpp
+++ b/src/test/key_tests.cpp
@@ -31,29 +31,6 @@ static const std::string addr2C = "DNBVSAoc2whPFjZVAZ1pQbXPJk1LRrDC8Q";
 static const std::string strAddressBad ="Xta1praZQjyELweyMByXyiREw1ZRsjXzVP";
 
 
-#ifdef KEY_TESTS_DUMPINFO
-void dumpKeyInfo(uint256 privkey)
-{
-    CKey key;
-    key.resize(32);
-    memcpy(&secret[0], &privkey, 32);
-    std::vector<unsigned char> sec;
-    sec.resize(32);
-    memcpy(&sec[0], &secret[0], 32);
-    printf("  * secret (hex): %s\n", HexStr(sec).c_str());
-
-    for (int nCompressed=0; nCompressed<2; nCompressed++)
-    {
-        printf("    * secret (base58): %s\n", KeyIO::EncodeSecret(secret));
-        CKey key;
-        key.SetSecret(secret, fCompressed);
-        std::vector<unsigned char> vchPubKey = key.GetPubKey();
-        printf("    * pubkey (hex): %s\n", HexStr(vchPubKey).c_str());
-        printf("    * address (base58): %s\n", EncodeDestination(vchPubKey).c_str());
-    }
-}
-#endif
-
 BOOST_FIXTURE_TEST_SUITE(key_tests, TestingSetup)
 
 BOOST_AUTO_TEST_CASE(key_test1)
diff --git a/src/test/script_tests.cpp b/src/test/script_tests.cpp
index 31a3ac7ee15c5..895ef6e7e12ec 100644
--- a/src/test/script_tests.cpp
+++ b/src/test/script_tests.cpp
@@ -370,11 +370,6 @@ class TestBuilder
     {
         return comment;
     }
-
-    const CScript& GetScriptPubKey()
-    {
-        return creditTx->vout[0].scriptPubKey;
-    }
 };
 
 std::string JSONPrettyPrint(const UniValue& univalue)