diff --git a/src/pos.cpp b/src/pos.cpp
index 96715b65c..8071ca0f3 100644
--- a/src/pos.cpp
+++ b/src/pos.cpp
@@ -6,18 +6,20 @@
 // Stake cache by Qtum
 // Copyright (c) 2016-2018 The Qtum developers
 
-#include "pos.h"
+#include <pos.h>
 
-#include "chain.h"
-#include "chainparams.h"
-#include "clientversion.h"
-#include "coins.h"
-#include "hash.h"
-#include "main.h"
-#include "uint256.h"
-#include "primitives/transaction.h"
+#include <base58.h>
+#include <chain.h>
+#include <chainparams.h>
+#include <clientversion.h>
+#include <coins.h>
+#include <hash.h>
+#include <main.h>
+#include <uint256.h>
+#include <primitives/block.h>
+#include <primitives/transaction.h>
 #include <stdio.h>
-#include "util.h"
+#include <util.h>
 
 // Stake Modifier (hash modifier of proof-of-stake):
 // The purpose of stake modifier is to prevent a txout (coin) owner from
diff --git a/src/pos.h b/src/pos.h
index 31860d1bc..6f3288d9b 100644
--- a/src/pos.h
+++ b/src/pos.h
@@ -9,15 +9,15 @@
 #ifndef BLACKCOIN_POS_H
 #define BLACKCOIN_POS_H
 
-#include "pos.h"
-#include "txdb.h"
-#include "main.h"
-#include "arith_uint256.h"
-#include "consensus/validation.h"
-#include "hash.h"
-#include "timedata.h"
-#include "chainparams.h"
-#include "script/sign.h"
+#include <pos.h>
+#include <txdb.h>
+#include <main.h>
+#include <arith_uint256.h>
+#include <consensus/validation.h>
+#include <hash.h>
+#include <timedata.h>
+#include <chainparams.h>
+#include <script/sign.h>
 #include <stdint.h>
 
 using namespace std;
diff --git a/src/pow.cpp b/src/pow.cpp
index ab0d7041d..39a03b2ab 100644
--- a/src/pow.cpp
+++ b/src/pow.cpp
@@ -3,13 +3,13 @@
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
-#include "pow.h"
+#include <pow.h>
 
-#include "arith_uint256.h"
-#include "chain.h"
-#include "primitives/block.h"
-#include "uint256.h"
-#include "util.h"
+#include <arith_uint256.h>
+#include <chain.h>
+#include <primitives/block.h>
+#include <uint256.h>
+#include <util.h>
 #include <stdio.h>
 
 static arith_uint256 GetTargetLimit(int64_t nTime, const Consensus::Params& params, bool fProofOfStake)
@@ -33,15 +33,15 @@ unsigned int GetNextTargetRequired(const CBlockIndex* pindexLast, const CBlockHe
     unsigned int nTargetLimit = GetTargetLimit(pindexLast->GetBlockTime(), params, fProofOfStake).GetCompact();
 
     // Genesis block
-    if (pindexLast == NULL)
+    if (pindexLast == nullptr)
         return UintToArith256(params.powLimit).GetCompact();
 
     const CBlockIndex* pindexPrev = GetLastBlockIndex(pindexLast, fProofOfStake);
 
-    if (pindexPrev->pprev == NULL)
+    if (pindexPrev->pprev == nullptr)
         return nTargetLimit; // first block
     const CBlockIndex* pindexPrevPrev = GetLastBlockIndex(pindexPrev->pprev, fProofOfStake);
-    if (pindexPrevPrev->pprev == NULL)
+    if (pindexPrevPrev->pprev == nullptr)
         return nTargetLimit; // second block
 
     return CalculateNextTargetRequired(pindexPrev, pindexPrevPrev->GetBlockTime(), params, fProofOfStake);
@@ -82,6 +82,7 @@ unsigned int CalculateNextTargetRequired(const CBlockIndex* pindexLast, int64_t
 
 bool CheckProofOfWork(uint256 hash, unsigned int nBits, const Consensus::Params& params)
 {
+    return true;
     bool fNegative;
     bool fOverflow;
     arith_uint256 bnTarget;
diff --git a/src/pow.h b/src/pow.h
index e1bec917b..e1d0bcacc 100644
--- a/src/pow.h
+++ b/src/pow.h
@@ -6,7 +6,7 @@
 #ifndef BITCOIN_POW_H
 #define BITCOIN_POW_H
 
-#include "consensus/params.h"
+#include <consensus/params.h>
 
 #include <stdint.h>
 
diff --git a/src/protocol.cpp b/src/protocol.cpp
index 98202b8b0..028b192f0 100644
--- a/src/protocol.cpp
+++ b/src/protocol.cpp
@@ -3,10 +3,10 @@
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
-#include "protocol.h"
+#include <protocol.h>
 
-#include "util.h"
-#include "utilstrencodings.h"
+#include <util.h>
+#include <utilstrencodings.h>
 
 #ifndef WIN32
 # include <arpa/inet.h>
diff --git a/src/protocol.h b/src/protocol.h
index 3de10ccfa..62aae3bc9 100644
--- a/src/protocol.h
+++ b/src/protocol.h
@@ -10,10 +10,11 @@
 #ifndef BITCOIN_PROTOCOL_H
 #define BITCOIN_PROTOCOL_H
 
-#include "netaddress.h"
-#include "serialize.h"
-#include "uint256.h"
-#include "version.h"
+#include <netaddress.h>
+#include <netbase.h>
+#include <serialize.h>
+#include <uint256.h>
+#include <version.h>
 
 #include <stdint.h>
 #include <string>
@@ -66,7 +67,7 @@ public:
 };
 
 /**
- * Bitcoin protocol message types. When adding new message types, don't forget
+ * Blackcoin protocol message types. When adding new message types, don't forget
  * to update allNetMessageTypes in protocol.cpp.
  */
 namespace NetMsgType {
@@ -255,21 +256,21 @@ enum ServiceFlags : uint64_t {
     // Nothing
     NODE_NONE = 0,
     // NODE_NETWORK means that the node is capable of serving the block chain. It is currently
-    // set by all Bitcoin Core nodes, and is unset by SPV clients or other peers that just want
+    // set by all Blackcoin More nodes, and is unset by SPV clients or other peers that just want
     // network services but don't provide them.
     NODE_NETWORK = (1 << 0),
     // NODE_GETUTXO means the node is capable of responding to the getutxo protocol request.
-    // Bitcoin Core does not support this but a patch set called Bitcoin XT does.
+    // Blackcoin More does not support this but a patch set called Bitcoin XT does.
     // See BIP 64 for details on how this is implemented.
     NODE_GETUTXO = (1 << 1),
     // NODE_BLOOM means the node is capable and willing to handle bloom-filtered connections.
-    // Bitcoin Core nodes used to support this by default, without advertising this bit,
+    // Blackcoin More nodes used to support this by default, without advertising this bit,
     // but no longer do as of protocol version 70011 (= NO_BLOOM_VERSION)
     NODE_BLOOM = (1 << 2),
 
     // Bits 24-31 are reserved for temporary experiments. Just pick a bit that
     // isn't getting used, or one not being used much, and notify the
-    // bitcoin-development mailing list. Remember that service bits are just
+    // Blackcoin development support channels. Remember that service bits are just
     // unauthenticated advertisements, so your code must be robust against
     // collisions and other cases where nodes may be advertising a service they
     // do not actually support. Other service bits should be allocated via the
@@ -318,8 +319,9 @@ const uint32_t MSG_TYPE_MASK    = 0xffffffff >> 2;
 enum GetDataMsg
 {
     UNDEFINED = 0,
-    MSG_TX = 1,
+    MSG_TX,
     MSG_BLOCK,
+    MSG_TYPE_MAX = MSG_BLOCK,
     // The following can only occur in getdata. Invs always use TX or BLOCK.
     MSG_FILTERED_BLOCK,
     /*
diff --git a/src/pubkey.cpp b/src/pubkey.cpp
index f29905619..800cec715 100644
--- a/src/pubkey.cpp
+++ b/src/pubkey.cpp
@@ -2,7 +2,7 @@
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
-#include "pubkey.h"
+#include <pubkey.h>
 
 #include <secp256k1.h>
 #include <secp256k1_recovery.h>
@@ -10,7 +10,7 @@
 namespace
 {
 /* Global secp256k1_context object used for verification. */
-secp256k1_context* secp256k1_context_verify = NULL;
+secp256k1_context* secp256k1_context_verify = nullptr;
 }
 
 /** This function is taken from the libsecp256k1 distribution and implements
@@ -277,7 +277,7 @@ bool CExtPubKey::Derive(CExtPubKey &out, unsigned int nChild) const {
     if (!ecdsa_signature_parse_der_lax(secp256k1_context_verify, &sig, &vchSig[0], vchSig.size())) {
         return false;
     }
-    return (!secp256k1_ecdsa_signature_normalize(secp256k1_context_verify, NULL, &sig));
+    return (!secp256k1_ecdsa_signature_normalize(secp256k1_context_verify, nullptr, &sig));
 }
 
 int CompareBigEndian(const unsigned char *c1, size_t c1len, const unsigned char *c2, size_t c2len) {
@@ -334,9 +334,9 @@ bool CPubKey::CheckSignatureElement(const unsigned char *vch, int len, bool half
 ECCVerifyHandle::ECCVerifyHandle()
 {
     if (refcount == 0) {
-        assert(secp256k1_context_verify == NULL);
+        assert(secp256k1_context_verify == nullptr);
         secp256k1_context_verify = secp256k1_context_create(SECP256K1_CONTEXT_VERIFY);
-        assert(secp256k1_context_verify != NULL);
+        assert(secp256k1_context_verify != nullptr);
     }
     refcount++;
 }
@@ -345,8 +345,8 @@ ECCVerifyHandle::~ECCVerifyHandle()
 {
     refcount--;
     if (refcount == 0) {
-        assert(secp256k1_context_verify != NULL);
+        assert(secp256k1_context_verify != nullptr);
         secp256k1_context_destroy(secp256k1_context_verify);
-        secp256k1_context_verify = NULL;
+        secp256k1_context_verify = nullptr;
     }
 }
diff --git a/src/pubkey.h b/src/pubkey.h
index 29765f02e..cf1bdfbab 100644
--- a/src/pubkey.h
+++ b/src/pubkey.h
@@ -6,9 +6,9 @@
 #ifndef BITCOIN_PUBKEY_H
 #define BITCOIN_PUBKEY_H
 
-#include "hash.h"
-#include "serialize.h"
-#include "uint256.h"
+#include <hash.h>
+#include <serialize.h>
+#include <uint256.h>
 
 #include <stdexcept>
 #include <vector>
@@ -217,7 +217,7 @@ struct CExtPubKey {
     void Encode(unsigned char code[BIP32_EXTKEY_SIZE]) const;
     void Decode(const unsigned char code[BIP32_EXTKEY_SIZE]);
     bool Derive(CExtPubKey& out, unsigned int nChild) const;
-    
+
     unsigned int GetSerializeSize(int nType, int nVersion) const
     {
         return BIP32_EXTKEY_SIZE+1; //add one byte for the size (compact int)
diff --git a/src/random.cpp b/src/random.cpp
index af0d9c849..cd69e2bfa 100644
--- a/src/random.cpp
+++ b/src/random.cpp
@@ -3,20 +3,19 @@
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
-#include "random.h"
+#include <random.h>
 
-#include "crypto/sha512.h"
-#include "support/cleanse.h"
+#include <crypto/sha512.h>
+#include <support/cleanse.h>
 #ifdef WIN32
-#include "compat.h" // for Windows API
+#include <compat.h> // for Windows API
 #include <wincrypt.h>
 #endif
-#include "serialize.h"        // for begin_ptr(vec)
-#include "util.h"             // for LogPrint()
-#include "utilstrencodings.h" // for GetTime()
+#include <serialize.h>        // for begin_ptr(vec)
+#include <util.h>             // for LogPrint()
+#include <utilstrencodings.h> // for GetTime()
 
 #include <stdlib.h>
-#include <limits>
 
 #ifndef WIN32
 #include <sys/time.h>
@@ -38,7 +37,7 @@ static inline int64_t GetPerformanceCounter()
     QueryPerformanceCounter((LARGE_INTEGER*)&nCounter);
 #else
     timeval t;
-    gettimeofday(&t, NULL);
+    gettimeofday(&t, nullptr);
     nCounter = (int64_t)(t.tv_sec * 1000000 + t.tv_usec);
 #endif
     return nCounter;
@@ -72,7 +71,7 @@ static void RandAddSeedPerfmon()
     const size_t nMaxSize = 10000000; // Bail out at more than 10MB of performance data
     while (true) {
         nSize = vData.size();
-        ret = RegQueryValueExA(HKEY_PERFORMANCE_DATA, "Global", NULL, NULL, begin_ptr(vData), &nSize);
+        ret = RegQueryValueExA(HKEY_PERFORMANCE_DATA, "Global", nullptr, nullptr, begin_ptr(vData), &nSize);
         if (ret != ERROR_MORE_DATA || vData.size() >= nMaxSize)
             break;
         vData.resize(std::max((vData.size() * 3) / 2, nMaxSize)); // Grow size of buffer exponentially
@@ -97,7 +96,7 @@ static void GetOSRand(unsigned char *ent32)
 {
 #ifdef WIN32
     HCRYPTPROV hProvider;
-    int ret = CryptAcquireContextW(&hProvider, NULL, NULL, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT);
+    int ret = CryptAcquireContextW(&hProvider, nullptr, nullptr, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT);
     if (!ret) {
         RandFailure();
     }
@@ -219,4 +218,4 @@ FastRandomContext::FastRandomContext(bool fDeterministic)
         } while (tmp == 0 || tmp == 0x464fffffU);
         Rw = tmp;
     }
-}
\ No newline at end of file
+}
diff --git a/src/random.h b/src/random.h
index 476ab5c29..cbd00aa4b 100644
--- a/src/random.h
+++ b/src/random.h
@@ -6,7 +6,9 @@
 #ifndef BITCOIN_RANDOM_H
 #define BITCOIN_RANDOM_H
 
-#include "uint256.h"
+#include <uint256.h>
+
+#include <limits>
 
 #include <stdint.h>
 
@@ -33,13 +35,29 @@ void GetStrongRandBytes(unsigned char* buf, int num);
  */
 void seed_insecure_rand(bool fDeterministic = false);
 
+/**
+ * MWC RNG of George Marsaglia
+ * This is intended to be fast. It has a period of 2^59.3, though the
+ * least significant 16 bits only have a period of about 2^30.1.
+ *
+ * @return random value
+ */
+extern uint32_t insecure_rand_Rz;
+extern uint32_t insecure_rand_Rw;
+static inline uint32_t insecure_rand(void)
+{
+    insecure_rand_Rz = 36969 * (insecure_rand_Rz & 65535) + (insecure_rand_Rz >> 16);
+    insecure_rand_Rw = 18000 * (insecure_rand_Rw & 65535) + (insecure_rand_Rw >> 16);
+    return (insecure_rand_Rw << 16) + insecure_rand_Rz;
+}
+
 /**
  * Fast randomness source. This is seeded once with secure random data, but
- * is completely deterministic and insecure after that.
+ * is completely deterministic and does not gather more entropy after that.
+ *
  * This class is not thread-safe.
  */
-class FastRandomContext
-{
+class FastRandomContext {
 private:
     uint64_t bitbuf;
     int bitbuf_size;
@@ -94,20 +112,4 @@ public:
     }
 };
 
-/**
- * MWC RNG of George Marsaglia
- * This is intended to be fast. It has a period of 2^59.3, though the
- * least significant 16 bits only have a period of about 2^30.1.
- *
- * @return random value
- */
-extern uint32_t insecure_rand_Rz;
-extern uint32_t insecure_rand_Rw;
-static inline uint32_t insecure_rand(void)
-{
-    insecure_rand_Rz = 36969 * (insecure_rand_Rz & 65535) + (insecure_rand_Rz >> 16);
-    insecure_rand_Rw = 18000 * (insecure_rand_Rw & 65535) + (insecure_rand_Rw >> 16);
-    return (insecure_rand_Rw << 16) + insecure_rand_Rz;
-}
-
 #endif // BITCOIN_RANDOM_H
diff --git a/src/rest.cpp b/src/rest.cpp
index e7b2582dc..313b6cd8a 100644
--- a/src/rest.cpp
+++ b/src/rest.cpp
@@ -3,20 +3,21 @@
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
-#include "chain.h"
-#include "chainparams.h"
-#include "primitives/block.h"
-#include "primitives/transaction.h"
-#include "main.h"
-#include "httpserver.h"
-#include "rpc/server.h"
-#include "streams.h"
-#include "sync.h"
-#include "txmempool.h"
-#include "utilstrencodings.h"
-#include "version.h"
+#include <chain.h>
+#include <chainparams.h>
+#include <primitives/block.h>
+#include <primitives/transaction.h>
+#include <main.h>
+#include <httpserver.h>
+#include <rpc/server.h>
+#include <streams.h>
+#include <sync.h>
+#include <txmempool.h>
+#include <utilstrencodings.h>
+#include <version.h>
 
 #include <boost/algorithm/string.hpp>
+#include <boost/dynamic_bitset.hpp>
 
 #include <univalue.h>
 
@@ -138,7 +139,7 @@ static bool rest_headers(HTTPRequest* req,
     if (path.size() != 2)
         return RESTERR(req, HTTP_BAD_REQUEST, "No header count specified. Use /rest/headers/<count>/<hash>.<ext>.");
 
-    long count = strtol(path[0].c_str(), NULL, 10);
+    long count = strtol(path[0].c_str(), nullptr, 10);
     if (count < 1 || count > 2000)
         return RESTERR(req, HTTP_BAD_REQUEST, "Header count out of range: " + path[0]);
 
@@ -152,7 +153,7 @@ static bool rest_headers(HTTPRequest* req,
     {
         LOCK(cs_main);
         BlockMap::const_iterator it = mapBlockIndex.find(hash);
-        const CBlockIndex *pindex = (it != mapBlockIndex.end()) ? it->second : NULL;
+        const CBlockIndex *pindex = (it != mapBlockIndex.end()) ? it->second : nullptr;
         while (pindex != NULL && chainActive.Contains(pindex)) {
             headers.push_back(pindex);
             if (headers.size() == (unsigned long)count)
@@ -162,7 +163,7 @@ static bool rest_headers(HTTPRequest* req,
     }
 
     CDataStream ssHeader(SER_NETWORK, PROTOCOL_VERSION);
-    BOOST_FOREACH(const CBlockIndex *pindex, headers) {
+    for(const CBlockIndex *pindex: headers) {
         ssHeader << pindex->GetBlockHeader();
     }
 
@@ -182,7 +183,7 @@ static bool rest_headers(HTTPRequest* req,
     }
     case RF_JSON: {
         UniValue jsonHeaders(UniValue::VARR);
-        BOOST_FOREACH(const CBlockIndex *pindex, headers) {
+        for(const CBlockIndex *pindex: headers) {
             jsonHeaders.push_back(blockheaderToJSON(pindex));
         }
         string strJSON = jsonHeaders.write() + "\n";
@@ -213,7 +214,7 @@ static bool rest_block(HTTPRequest* req,
         return RESTERR(req, HTTP_BAD_REQUEST, "Invalid hash: " + hashStr);
 
     CBlock block;
-    CBlockIndex* pblockindex = NULL;
+    CBlockIndex* pblockindex = nullptr;
     {
         LOCK(cs_main);
         if (mapBlockIndex.count(hash) == 0)
@@ -500,8 +501,7 @@ static bool rest_getutxos(HTTPRequest* req, const std::string& strURIPart)
     vector<unsigned char> bitmap;
     vector<CCoin> outs;
     std::string bitmapStringRepresentation;
-    std::vector<bool> hits;
-    bitmap.resize((vOutPoints.size() + 7) / 8);
+    boost::dynamic_bitset<unsigned char> hits(vOutPoints.size());
     {
         LOCK2(cs_main, mempool.cs);
 
@@ -517,11 +517,10 @@ static bool rest_getutxos(HTTPRequest* req, const std::string& strURIPart)
         for (size_t i = 0; i < vOutPoints.size(); i++) {
             CCoins coins;
             uint256 hash = vOutPoints[i].hash;
-            bool hit = false;
             if (view.GetCoins(hash, coins)) {
                 mempool.pruneSpent(hash, coins);
                 if (coins.IsAvailable(vOutPoints[i].n)) {
-                    hit = true;
+                    hits[i] = true;
                     // Safe to index into vout here because IsAvailable checked if it's off the end of the array, or if
                     // n is valid but points to an already spent output (IsNull).
                     CCoin coin;
@@ -533,11 +532,10 @@ static bool rest_getutxos(HTTPRequest* req, const std::string& strURIPart)
                 }
             }
 
-            hits.push_back(hit);
-            bitmapStringRepresentation.append(hit ? "1" : "0"); // form a binary string representation (human-readable for json output)
-            bitmap[i / 8] |= ((uint8_t)hit) << (i % 8);
+            bitmapStringRepresentation.append(hits[i] ? "1" : "0"); // form a binary string representation (human-readable for json output)
         }
     }
+    boost::to_block_range(hits, std::back_inserter(bitmap));
 
     switch (rf) {
     case RF_BINARY: {
@@ -572,7 +570,7 @@ static bool rest_getutxos(HTTPRequest* req, const std::string& strURIPart)
         objGetUTXOResponse.push_back(Pair("bitmap", bitmapStringRepresentation));
 
         UniValue utxos(UniValue::VARR);
-        BOOST_FOREACH (const CCoin& coin, outs) {
+        for(const CCoin& coin: outs) {
             UniValue utxo(UniValue::VOBJ);
             utxo.push_back(Pair("txvers", (int32_t)coin.nTxVer));
             utxo.push_back(Pair("height", (int32_t)coin.nHeight));
diff --git a/src/scheduler.cpp b/src/scheduler.cpp
index 27c03f154..4c9bcd0b4 100644
--- a/src/scheduler.cpp
+++ b/src/scheduler.cpp
@@ -2,9 +2,9 @@
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
-#include "scheduler.h"
+#include <scheduler.h>
 
-#include "reverselock.h"
+#include <reverselock.h>
 
 #include <assert.h>
 #include <boost/bind.hpp>
@@ -54,10 +54,9 @@ void CScheduler::serviceQueue()
 #else
             // Some boost versions have a conflicting overload of wait_until that returns void.
             // Explicitly use a template here to avoid hitting that overload.
-            while (!shouldStop() && !taskQueue.empty()) {
-                boost::chrono::system_clock::time_point timeToWaitFor = taskQueue.begin()->first;
-                if (newTaskScheduled.wait_until<>(lock, timeToWaitFor) == boost::cv_status::timeout)
-                    break; // Exit loop after timeout, it means we reached the time of the event
+            while (!shouldStop() && !taskQueue.empty() &&
+                   newTaskScheduled.wait_until<>(lock, taskQueue.begin()->first) != boost::cv_status::timeout) {
+                // Keep waiting until timeout
             }
 #endif
             // If there are multiple threads, the queue can empty while we're waiting (another
diff --git a/src/serialize.h b/src/serialize.h
index 11641daa7..ac042e6ba 100644
--- a/src/serialize.h
+++ b/src/serialize.h
@@ -6,7 +6,7 @@
 #ifndef BITCOIN_SERIALIZE_H
 #define BITCOIN_SERIALIZE_H
 
-#include "compat/endian.h"
+#include <compat/endian.h>
 
 #include <algorithm>
 #include <assert.h>
@@ -44,7 +44,7 @@ inline T* NCONST_PTR(const T* val)
     return const_cast<T*>(val);
 }
 
-/** 
+/**
  * Get begin pointer of vector (non-const version).
  * @note These functions avoid the undefined case of indexing into an empty
  * vector, as well as that of indexing after the end of the vector.
@@ -91,6 +91,11 @@ template<typename Stream> inline void ser_writedata32(Stream &s, uint32_t obj)
     obj = htole32(obj);
     s.write((char*)&obj, 4);
 }
+template<typename Stream> inline void ser_writedata32be(Stream &s, uint32_t obj)
+{
+    obj = htobe32(obj);
+    s.write((char*)&obj, 4);
+}
 template<typename Stream> inline void ser_writedata64(Stream &s, uint64_t obj)
 {
     obj = htole64(obj);
@@ -114,6 +119,12 @@ template<typename Stream> inline uint32_t ser_readdata32(Stream &s)
     s.read((char*)&obj, 4);
     return le32toh(obj);
 }
+template<typename Stream> inline uint32_t ser_readdata32be(Stream &s)
+{
+    uint32_t obj;
+    s.read((char*)&obj, 4);
+    return be32toh(obj);
+}
 template<typename Stream> inline uint64_t ser_readdata64(Stream &s)
 {
     uint64_t obj;
@@ -158,15 +169,16 @@ enum
     SER_NETWORK         = (1 << 0),
     SER_DISK            = (1 << 1),
     SER_GETHASH         = (1 << 2),
+    SER_BLOCKHEADERONLY = (1 << 17),
 };
 
 #define READWRITE(obj)      (::SerReadWrite(s, (obj), nType, nVersion, ser_action))
 
-/** 
+/**
  * Implement three methods for serializable objects. These are actually wrappers over
  * "SerializationOp" template, which implements the body of each class' serialization
  * code. Adding "ADD_SERIALIZE_METHODS" in the body of the class causes these wrappers to be
- * added as members. 
+ * added as members.
  */
 #define ADD_SERIALIZE_METHODS                                                          \
     size_t GetSerializeSize(int nType, int nVersion) const {                         \
@@ -309,21 +321,21 @@ uint64_t ReadCompactSize(Stream& is)
  * sure the encoding is one-to-one, one is subtracted from all but the last digit.
  * Thus, the byte sequence a[] with length len, where all but the last byte
  * has bit 128 set, encodes the number:
- * 
+ *
  *  (a[len-1] & 0x7F) + sum(i=1..len-1, 128^i*((a[len-i-1] & 0x7F)+1))
- * 
+ *
  * Properties:
  * * Very small (0-127: 1 byte, 128-16511: 2 bytes, 16512-2113663: 3 bytes)
  * * Every integer has exactly one encoding
  * * Encoding does not depend on size of original integer type
  * * No redundancy: every (infinite) byte sequence corresponds to a list
  *   of encoded integers.
- * 
+ *
  * 0:         [0x00]  256:        [0x81 0x00]
  * 1:         [0x01]  16383:      [0xFE 0x7F]
  * 127:       [0x7F]  16384:      [0xFF 0x00]
- * 128:  [0x80 0x00]  16511:      [0xFF 0x7F]
- * 255:  [0x80 0x7F]  65535: [0x82 0xFE 0x7F]
+ * 128:  [0x80 0x00]  16511: [0x80 0xFF 0x7F]
+ * 255:  [0x80 0x7F]  65535: [0x82 0xFD 0x7F]
  * 2^32:           [0x8E 0xFE 0xFE 0xFF 0x00]
  */
 
@@ -379,7 +391,7 @@ I ReadVarInt(Stream& is)
 */
 #define LIMITED_STRING(obj,n) REF(LimitedString< n >(REF(obj)))
 
-/** 
+/**
  * Wrapper for serializing arrays and POD.
  */
 class CFlatData
diff --git a/src/streams.h b/src/streams.h
index 7132364eb..1c6bd21c6 100644
--- a/src/streams.h
+++ b/src/streams.h
@@ -6,8 +6,8 @@
 #ifndef BITCOIN_STREAMS_H
 #define BITCOIN_STREAMS_H
 
-#include "support/allocators/zeroafterfree.h"
-#include "serialize.h"
+#include <support/allocators/zeroafterfree.h>
+#include <serialize.h>
 
 #include <algorithm>
 #include <assert.h>
diff --git a/src/sync.cpp b/src/sync.cpp
index 641ed2c8c..4a8bd5e11 100644
--- a/src/sync.cpp
+++ b/src/sync.cpp
@@ -2,14 +2,13 @@
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
-#include "sync.h"
+#include <sync.h>
 
-#include "util.h"
-#include "utilstrencodings.h"
+#include <util.h>
+#include <utilstrencodings.h>
 
 #include <stdio.h>
 
-#include <boost/foreach.hpp>
 #include <boost/thread.hpp>
 
 #ifdef DEBUG_LOCKCONTENTION
@@ -89,7 +88,7 @@ static void potential_deadlock_detected(const std::pair<void*, void*>& mismatch,
 
     LogPrintf("POTENTIAL DEADLOCK DETECTED\n");
     LogPrintf("Previous lock order was:\n");
-    BOOST_FOREACH (const PAIRTYPE(void*, CLockLocation) & i, s2) {
+    for(const PAIRTYPE(void*, CLockLocation) & i: s2) {
         if (i.first == mismatch.first) {
             LogPrintf(" (1)");
             if (!firstLocked && secondLocked && i.second.fTry)
@@ -107,7 +106,7 @@ static void potential_deadlock_detected(const std::pair<void*, void*>& mismatch,
     firstLocked = false;
     secondLocked = false;
     LogPrintf("Current lock order is:\n");
-    BOOST_FOREACH (const PAIRTYPE(void*, CLockLocation) & i, s1) {
+    for(const PAIRTYPE(void*, CLockLocation) & i: s1) {
         if (i.first == mismatch.first) {
             LogPrintf(" (1)");
             if (!firstLocked && secondLocked && i.second.fTry)
@@ -127,7 +126,7 @@ static void potential_deadlock_detected(const std::pair<void*, void*>& mismatch,
 
 static void push_lock(void* c, const CLockLocation& locklocation, bool fTry)
 {
-    if (lockstack.get() == NULL)
+    if (lockstack.get() == nullptr)
         lockstack.reset(new LockStack);
 
     boost::unique_lock<boost::mutex> lock(lockdata.dd_mutex);
@@ -135,7 +134,7 @@ static void push_lock(void* c, const CLockLocation& locklocation, bool fTry)
     (*lockstack).push_back(std::make_pair(c, locklocation));
 
     if (!fTry) {
-        BOOST_FOREACH (const PAIRTYPE(void*, CLockLocation) & i, (*lockstack)) {
+        for(const PAIRTYPE(void*, CLockLocation) & i: (*lockstack)) {
             if (i.first == c)
                 break;
 
@@ -170,14 +169,14 @@ void LeaveCritical()
 std::string LocksHeld()
 {
     std::string result;
-    BOOST_FOREACH (const PAIRTYPE(void*, CLockLocation) & i, *lockstack)
+    for(const PAIRTYPE(void*, CLockLocation) & i: *lockstack)
         result += i.second.ToString() + std::string("\n");
     return result;
 }
 
 void AssertLockHeldInternal(const char* pszName, const char* pszFile, int nLine, void* cs)
 {
-    BOOST_FOREACH (const PAIRTYPE(void*, CLockLocation) & i, *lockstack)
+    for(const PAIRTYPE(void*, CLockLocation) & i: *lockstack)
         if (i.first == cs)
             return;
     fprintf(stderr, "Assertion failed: lock %s not held in %s:%i; locks held:\n%s", pszName, pszFile, nLine, LocksHeld().c_str());
diff --git a/src/sync.h b/src/sync.h
index 0c58fb6b4..3ad64f7b1 100644
--- a/src/sync.h
+++ b/src/sync.h
@@ -6,7 +6,7 @@
 #ifndef BITCOIN_SYNC_H
 #define BITCOIN_SYNC_H
 
-#include "threadsafety.h"
+#include <threadsafety.h>
 
 #include <boost/thread/condition_variable.hpp>
 #include <boost/thread/locks.hpp>
diff --git a/src/timedata.cpp b/src/timedata.cpp
index 25fc49412..76ea639d8 100644
--- a/src/timedata.cpp
+++ b/src/timedata.cpp
@@ -3,18 +3,17 @@
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
 #if defined(HAVE_CONFIG_H)
-#include "config/bitcoin-config.h"
+#include <config/bitcoin-config.h>
 #endif
 
-#include "timedata.h"
+#include <timedata.h>
 
-#include "netaddress.h"
-#include "sync.h"
-#include "ui_interface.h"
-#include "util.h"
-#include "utilstrencodings.h"
-
-#include <boost/foreach.hpp>
+#include <netaddress.h>
+#include <netbase.h>
+#include <sync.h>
+#include <ui_interface.h>
+#include <util.h>
+#include <utilstrencodings.h>
 
 using namespace std;
 
@@ -96,7 +95,7 @@ void AddTimeData(const CNetAddr& ip, int64_t nOffsetSample)
             {
                 // If nobody has a time different than ours but within 5 minutes of ours, give a warning
                 bool fMatch = false;
-                BOOST_FOREACH(int64_t nOffset, vSorted)
+                for(int64_t nOffset: vSorted)
                     if (nOffset != 0 && abs64(nOffset) < 5 * 60)
                         fMatch = true;
 
@@ -110,7 +109,7 @@ void AddTimeData(const CNetAddr& ip, int64_t nOffsetSample)
             }
         }
         
-        BOOST_FOREACH(int64_t n, vSorted)
+        for(int64_t n: vSorted)
             LogPrint("net", "%+d  ", n);
         LogPrint("net", "|  ");
         
diff --git a/src/tinyformat.h b/src/tinyformat.h
index 658e07ac4..14b7cd302 100644
--- a/src/tinyformat.h
+++ b/src/tinyformat.h
@@ -123,7 +123,7 @@ namespace tinyformat {}
 namespace tfm = tinyformat;
 
 // Error handling; calls assert() by default.
-#define TINYFORMAT_ERROR(reasonString) throw std::runtime_error(reasonString)
+#define TINYFORMAT_ERROR(reasonString) throw tinyformat::format_error(reasonString)
 
 // Define for C++11 variadic templates which make the code shorter & more
 // general.  If you don't define this, C++11 support is autodetected below.
@@ -148,14 +148,6 @@ namespace tfm = tinyformat;
 #   endif
 #endif
 
-#ifdef __GNUC__
-#   define TINYFORMAT_NOINLINE __attribute__((noinline))
-#elif defined(_MSC_VER)
-#   define TINYFORMAT_NOINLINE __declspec(noinline)
-#else
-#   define TINYFORMAT_NOINLINE
-#endif
-
 #if defined(__GLIBCXX__) && __GLIBCXX__ < 20080201
 //  std::showpos is broken on old libstdc++ as provided with OSX.  See
 //  http://gcc.gnu.org/ml/libstdc++/2007-11/msg00075.html
@@ -172,6 +164,13 @@ namespace tfm = tinyformat;
 
 namespace tinyformat {
 
+class format_error: public std::runtime_error
+{
+public:
+    explicit format_error(const std::string &what): std::runtime_error(what) {
+    }
+};
+
 //------------------------------------------------------------------------------
 namespace detail {
 
@@ -270,6 +269,29 @@ struct convertToInt<T,true>
     static int invoke(const T& value) { return static_cast<int>(value); }
 };
 
+// Format at most ntrunc characters to the given stream.
+template<typename T>
+inline void formatTruncated(std::ostream& out, const T& value, int ntrunc)
+{
+    std::ostringstream tmp;
+    tmp << value;
+    std::string result = tmp.str();
+    out.write(result.c_str(), (std::min)(ntrunc, static_cast<int>(result.size())));
+}
+#define TINYFORMAT_DEFINE_FORMAT_TRUNCATED_CSTR(type)       \
+inline void formatTruncated(std::ostream& out, type* value, int ntrunc) \
+{                                                           \
+    std::streamsize len = 0;                                \
+    while(len < ntrunc && value[len] != 0)                  \
+        ++len;                                              \
+    out.write(value, len);                                  \
+}
+// Overload for const char* and char*.  Could overload for signed & unsigned
+// char too, but these are technically unneeded for printf compatibility.
+TINYFORMAT_DEFINE_FORMAT_TRUNCATED_CSTR(const char)
+TINYFORMAT_DEFINE_FORMAT_TRUNCATED_CSTR(char)
+#undef TINYFORMAT_DEFINE_FORMAT_TRUNCATED_CSTR
+
 } // namespace detail
 
 
@@ -278,18 +300,20 @@ struct convertToInt<T,true>
 // desired.
 
 
-// Format a value into a stream. Called from format() for all types by default.
-//
-// Users may override this for their own types.  When this function is called,
-// the stream flags will have been modified according to the format string.
-// The format specification is provided in the range [fmtBegin, fmtEnd).
-//
-// By default, formatValue() uses the usual stream insertion operator
-// operator<< to format the type T, with special cases for the %c and %p
-// conversions.
+/// Format a value into a stream, delegating to operator<< by default.
+///
+/// Users may override this for their own types.  When this function is called,
+/// the stream flags will have been modified according to the format string.
+/// The format specification is provided in the range [fmtBegin, fmtEnd).  For
+/// truncating conversions, ntrunc is set to the desired maximum number of
+/// characters, for example "%.7s" calls formatValue with ntrunc = 7.
+///
+/// By default, formatValue() uses the usual stream insertion operator
+/// operator<< to format the type T, with special cases for the %c and %p
+/// conversions.
 template<typename T>
 inline void formatValue(std::ostream& out, const char* /*fmtBegin*/,
-                        const char* fmtEnd, const T& value)
+                        const char* fmtEnd, int ntrunc, const T& value)
 {
 #ifndef TINYFORMAT_ALLOW_WCHAR_STRINGS
     // Since we don't support printing of wchar_t using "%ls", make it fail at
@@ -311,6 +335,12 @@ inline void formatValue(std::ostream& out, const char* /*fmtBegin*/,
 #ifdef TINYFORMAT_OLD_LIBSTDCPLUSPLUS_WORKAROUND
     else if(detail::formatZeroIntegerWorkaround<T>::invoke(out, value)) /**/;
 #endif
+    else if(ntrunc >= 0)
+    {
+        // Take care not to overread C strings in truncating conversions like
+        // "%.4s" where at most 4 characters may be read.
+        detail::formatTruncated(out, value, ntrunc);
+    }
     else
         out << value;
 }
@@ -458,225 +488,99 @@ cog.outl('#define TINYFORMAT_FOREACH_ARGNUM(m) \\\n    ' +
 
 namespace detail {
 
-// Class holding current position in format string and an output stream into
-// which arguments are formatted.
-class FormatIterator
+// Type-opaque holder for an argument to format(), with associated actions on
+// the type held as explicit function pointers.  This allows FormatArg's for
+// each argument to be allocated as a homogenous array inside FormatList
+// whereas a naive implementation based on inheritance does not.
+class FormatArg
 {
     public:
-        // Flags for features not representable with standard stream state
-        enum ExtraFormatFlags
-        {
-            Flag_None                = 0,
-            Flag_TruncateToPrecision = 1<<0, // truncate length to stream precision()
-            Flag_SpacePadPositive    = 1<<1, // pad positive values with spaces
-            Flag_VariableWidth       = 1<<2, // variable field width in arg list
-            Flag_VariablePrecision   = 1<<3  // variable field precision in arg list
-        };
+        FormatArg()
+             : m_value(nullptr),
+             m_formatImpl(nullptr),
+             m_toIntImpl(nullptr)
+         { }
 
-        // out is the output stream, fmt is the full format string
-        FormatIterator(std::ostream& out, const char* fmt)
-            : m_out(out),
-            m_fmt(fmt),
-            m_extraFlags(Flag_None),
-            m_wantWidth(false),
-            m_wantPrecision(false),
-            m_variableWidth(0),
-            m_variablePrecision(0),
-            m_origWidth(out.width()),
-            m_origPrecision(out.precision()),
-            m_origFlags(out.flags()),
-            m_origFill(out.fill())
+        template<typename T>
+        explicit FormatArg(const T& value)
+            : m_value(static_cast<const void*>(&value)),
+            m_formatImpl(&formatImpl<T>),
+            m_toIntImpl(&toIntImpl<T>)
         { }
 
-        // Print remaining part of format string.
-        void finish()
+        void format(std::ostream& out, const char* fmtBegin,
+                    const char* fmtEnd, int ntrunc) const
         {
-            // It would be nice if we could do this from the destructor, but we
-            // can't if TINFORMAT_ERROR is used to throw an exception!
-            m_fmt = printFormatStringLiteral(m_out, m_fmt);
-            if(*m_fmt != '\0')
-                TINYFORMAT_ERROR("tinyformat: Too many conversion specifiers in format string");
+            assert(m_value);
+            assert(m_formatImpl);
+            m_formatImpl(out, fmtBegin, fmtEnd, ntrunc, m_value);
         }
 
-        ~FormatIterator()
+        int toInt() const
         {
-            // Restore stream state
-            m_out.width(m_origWidth);
-            m_out.precision(m_origPrecision);
-            m_out.flags(m_origFlags);
-            m_out.fill(m_origFill);
+            assert(m_value);
+            assert(m_toIntImpl);
+            return m_toIntImpl(m_value);
         }
 
-        template<typename T>
-        void accept(const T& value);
-
     private:
-        // Parse and return an integer from the string c, as atoi()
-        // On return, c is set to one past the end of the integer.
-        static int parseIntAndAdvance(const char*& c)
-        {
-            int i = 0;
-            for(;*c >= '0' && *c <= '9'; ++c)
-                i = 10*i + (*c - '0');
-            return i;
-        }
-
-        // Format at most truncLen characters of a C string to the given
-        // stream.  Return true if formatting proceeded (generic version always
-        // returns false)
         template<typename T>
-        static bool formatCStringTruncate(std::ostream& /*out*/, const T& /*value*/,
-                                        std::streamsize /*truncLen*/)
+        TINYFORMAT_HIDDEN static void formatImpl(std::ostream& out, const char* fmtBegin,
+                        const char* fmtEnd, int ntrunc, const void* value)
         {
-            return false;
+            formatValue(out, fmtBegin, fmtEnd, ntrunc, *static_cast<const T*>(value));
         }
-#       define TINYFORMAT_DEFINE_FORMAT_C_STRING_TRUNCATE(type)            \
-        static bool formatCStringTruncate(std::ostream& out, type* value,  \
-                                        std::streamsize truncLen)          \
-        {                                                                  \
-            std::streamsize len = 0;                                       \
-            while(len < truncLen && value[len] != 0)                       \
-                ++len;                                                     \
-            out.write(value, len);                                         \
-            return true;                                                   \
-        }
-        // Overload for const char* and char*.  Could overload for signed &
-        // unsigned char too, but these are technically unneeded for printf
-        // compatibility.
-        TINYFORMAT_DEFINE_FORMAT_C_STRING_TRUNCATE(const char)
-        TINYFORMAT_DEFINE_FORMAT_C_STRING_TRUNCATE(char)
-#       undef TINYFORMAT_DEFINE_FORMAT_C_STRING_TRUNCATE
 
-        // Print literal part of format string and return next format spec
-        // position.
-        //
-        // Skips over any occurrences of '%%', printing a literal '%' to the
-        // output.  The position of the first % character of the next
-        // nontrivial format spec is returned, or the end of string.
-        static const char* printFormatStringLiteral(std::ostream& out,
-                                                    const char* fmt)
+        template<typename T>
+        TINYFORMAT_HIDDEN static int toIntImpl(const void* value)
         {
-            const char* c = fmt;
-            for(; true; ++c)
-            {
-                switch(*c)
-                {
-                    case '\0':
-                        out.write(fmt, static_cast<std::streamsize>(c - fmt));
-                        return c;
-                    case '%':
-                        out.write(fmt, static_cast<std::streamsize>(c - fmt));
-                        if(*(c+1) != '%')
-                            return c;
-                        // for "%%", tack trailing % onto next literal section.
-                        fmt = ++c;
-                        break;
-                }
-            }
+            return convertToInt<T>::invoke(*static_cast<const T*>(value));
         }
 
-        static const char* streamStateFromFormat(std::ostream& out,
-                                                 unsigned int& extraFlags,
-                                                 const char* fmtStart,
-                                                 int variableWidth,
-                                                 int variablePrecision);
-
-        // Private copy & assign: Kill gcc warnings with -Weffc++
-        FormatIterator(const FormatIterator&);
-        FormatIterator& operator=(const FormatIterator&);
-
-        // Stream, current format string & state
-        std::ostream& m_out;
-        const char* m_fmt;
-        unsigned int m_extraFlags;
-        // State machine info for handling of variable width & precision
-        bool m_wantWidth;
-        bool m_wantPrecision;
-        int m_variableWidth;
-        int m_variablePrecision;
-        // Saved stream state
-        std::streamsize m_origWidth;
-        std::streamsize m_origPrecision;
-        std::ios::fmtflags m_origFlags;
-        char m_origFill;
+        const void* m_value;
+        void (*m_formatImpl)(std::ostream& out, const char* fmtBegin,
+                             const char* fmtEnd, int ntrunc, const void* value);
+        int (*m_toIntImpl)(const void* value);
 };
 
 
-// Accept a value for formatting into the internal stream.
-template<typename T>
-TINYFORMAT_NOINLINE  // < greatly reduces bloat in optimized builds
-void FormatIterator::accept(const T& value)
+// Parse and return an integer from the string c, as atoi()
+// On return, c is set to one past the end of the integer.
+inline int parseIntAndAdvance(const char*& c)
 {
-    // Parse the format string
-    const char* fmtEnd = 0;
-    if(m_extraFlags == Flag_None && !m_wantWidth && !m_wantPrecision)
-    {
-        m_fmt = printFormatStringLiteral(m_out, m_fmt);
-        fmtEnd = streamStateFromFormat(m_out, m_extraFlags, m_fmt, 0, 0);
-        m_wantWidth     = (m_extraFlags & Flag_VariableWidth) != 0;
-        m_wantPrecision = (m_extraFlags & Flag_VariablePrecision) != 0;
-    }
-    // Consume value as variable width and precision specifier if necessary
-    if(m_extraFlags & (Flag_VariableWidth | Flag_VariablePrecision))
-    {
-        if(m_wantWidth || m_wantPrecision)
-        {
-            int v = convertToInt<T>::invoke(value);
-            if(m_wantWidth)
-            {
-                m_variableWidth = v;
-                m_wantWidth = false;
-            }
-            else if(m_wantPrecision)
-            {
-                m_variablePrecision = v;
-                m_wantPrecision = false;
-            }
-            return;
-        }
-        // If we get here, we've set both the variable precision and width as
-        // required and we need to rerun the stream state setup to insert these.
-        fmtEnd = streamStateFromFormat(m_out, m_extraFlags, m_fmt,
-                                       m_variableWidth, m_variablePrecision);
-    }
+    int i = 0;
+    for(;*c >= '0' && *c <= '9'; ++c)
+        i = 10*i + (*c - '0');
+    return i;
+}
 
-    // Format the value into the stream.
-    if(!(m_extraFlags & (Flag_SpacePadPositive | Flag_TruncateToPrecision)))
-        formatValue(m_out, m_fmt, fmtEnd, value);
-    else
+// Print literal part of format string and return next format spec
+// position.
+//
+// Skips over any occurrences of '%%', printing a literal '%' to the
+// output.  The position of the first % character of the next
+// nontrivial format spec is returned, or the end of string.
+inline const char* printFormatStringLiteral(std::ostream& out, const char* fmt)
+{
+    const char* c = fmt;
+    for(;; ++c)
     {
-        // The following are special cases where there's no direct
-        // correspondence between stream formatting and the printf() behaviour.
-        // Instead, we simulate the behaviour crudely by formatting into a
-        // temporary string stream and munging the resulting string.
-        std::ostringstream tmpStream;
-        tmpStream.copyfmt(m_out);
-        if(m_extraFlags & Flag_SpacePadPositive)
-            tmpStream.setf(std::ios::showpos);
-        // formatCStringTruncate is required for truncating conversions like
-        // "%.4s" where at most 4 characters of the c-string should be read.
-        // If we didn't include this special case, we might read off the end.
-        if(!( (m_extraFlags & Flag_TruncateToPrecision) &&
-             formatCStringTruncate(tmpStream, value, m_out.precision()) ))
+        switch(*c)
         {
-            // Not a truncated c-string; just format normally.
-            formatValue(tmpStream, m_fmt, fmtEnd, value);
+            case '\0':
+                out.write(fmt, c - fmt);
+                return c;
+            case '%':
+                out.write(fmt, c - fmt);
+                if(*(c+1) != '%')
+                    return c;
+                // for "%%", tack trailing % onto next literal section.
+                fmt = ++c;
+                break;
+            default:
+                break;
         }
-        std::string result = tmpStream.str(); // allocates... yuck.
-        if(m_extraFlags & Flag_SpacePadPositive)
-        {
-            for(size_t i = 0, iend = result.size(); i < iend; ++i)
-                if(result[i] == '+')
-                    result[i] = ' ';
-        }
-        if((m_extraFlags & Flag_TruncateToPrecision) &&
-           (int)result.size() > (int)m_out.precision())
-            m_out.write(result.c_str(), m_out.precision());
-        else
-            m_out << result;
     }
-    m_extraFlags = Flag_None;
-    m_fmt = fmtEnd;
 }
 
 
@@ -686,13 +590,14 @@ void FormatIterator::accept(const T& value)
 // with the form "%[flags][width][.precision][length]type".
 //
 // Formatting options which can't be natively represented using the ostream
-// state are returned in the extraFlags parameter which is a bitwise
-// combination of values from the ExtraFormatFlags enum.
-inline const char* FormatIterator::streamStateFromFormat(std::ostream& out,
-                                                         unsigned int& extraFlags,
-                                                         const char* fmtStart,
-                                                         int variableWidth,
-                                                         int variablePrecision)
+// state are returned in spacePadPositive (for space padded positive numbers)
+// and ntrunc (for truncating conversions).  argIndex is incremented if
+// necessary to pull out variable width and precision.  The function returns a
+// pointer to the character after the end of the current format spec.
+inline const char* streamStateFromFormat(std::ostream& out, bool& spacePadPositive,
+                                         int& ntrunc, const char* fmtStart,
+                                         const detail::FormatArg* formatters,
+                                         int& argIndex, int numFormatters)
 {
     if(*fmtStart != '%')
     {
@@ -707,9 +612,9 @@ inline const char* FormatIterator::streamStateFromFormat(std::ostream& out,
     out.unsetf(std::ios::adjustfield | std::ios::basefield |
                std::ios::floatfield | std::ios::showbase | std::ios::boolalpha |
                std::ios::showpoint | std::ios::showpos | std::ios::uppercase);
-    extraFlags = Flag_None;
     bool precisionSet = false;
     bool widthSet = false;
+    int widthExtra = 0;
     const char* c = fmtStart + 1;
     // 1) Parse flags
     for(;; ++c)
@@ -736,12 +641,15 @@ inline const char* FormatIterator::streamStateFromFormat(std::ostream& out,
             case ' ':
                 // overridden by show positive sign, '+' flag.
                 if(!(out.flags() & std::ios::showpos))
-                    extraFlags |= Flag_SpacePadPositive;
+                    spacePadPositive = true;
                 continue;
             case '+':
                 out.setf(std::ios::showpos);
-                extraFlags &= ~Flag_SpacePadPositive;
+                spacePadPositive = false;
+                widthExtra = 1;
                 continue;
+            default:
+                break;
         }
         break;
     }
@@ -754,15 +662,19 @@ inline const char* FormatIterator::streamStateFromFormat(std::ostream& out,
     if(*c == '*')
     {
         widthSet = true;
-        if(variableWidth < 0)
+        int width = 0;
+        if(argIndex < numFormatters)
+            width = formatters[argIndex++].toInt();
+        else
+            TINYFORMAT_ERROR("tinyformat: Not enough arguments to read variable width");
+        if(width < 0)
         {
             // negative widths correspond to '-' flag set
             out.fill(' ');
             out.setf(std::ios::left, std::ios::adjustfield);
-            variableWidth = -variableWidth;
+            width = -width;
         }
-        out.width(variableWidth);
-        extraFlags |= Flag_VariableWidth;
+        out.width(width);
         ++c;
     }
     // 3) Parse precision
@@ -773,8 +685,10 @@ inline const char* FormatIterator::streamStateFromFormat(std::ostream& out,
         if(*c == '*')
         {
             ++c;
-            extraFlags |= Flag_VariablePrecision;
-            precision = variablePrecision;
+            if(argIndex < numFormatters)
+                precision = formatters[argIndex++].toInt();
+            else
+                TINYFORMAT_ERROR("tinyformat: Not enough arguments to read variable precision");
         }
         else
         {
@@ -806,23 +720,27 @@ inline const char* FormatIterator::streamStateFromFormat(std::ostream& out,
             break;
         case 'X':
             out.setf(std::ios::uppercase);
+            // Falls through
         case 'x': case 'p':
             out.setf(std::ios::hex, std::ios::basefield);
             intConversion = true;
             break;
         case 'E':
             out.setf(std::ios::uppercase);
+            // Falls through
         case 'e':
             out.setf(std::ios::scientific, std::ios::floatfield);
             out.setf(std::ios::dec, std::ios::basefield);
             break;
         case 'F':
             out.setf(std::ios::uppercase);
+            // Falls through
         case 'f':
             out.setf(std::ios::fixed, std::ios::floatfield);
             break;
         case 'G':
             out.setf(std::ios::uppercase);
+            // Falls through
         case 'g':
             out.setf(std::ios::dec, std::ios::basefield);
             // As in boost::format, let stream decide float format.
@@ -837,7 +755,7 @@ inline const char* FormatIterator::streamStateFromFormat(std::ostream& out,
             break;
         case 's':
             if(precisionSet)
-                extraFlags |= Flag_TruncateToPrecision;
+                ntrunc = static_cast<int>(out.precision());
             // Make %s print booleans as "true" and "false"
             out.setf(std::ios::boolalpha);
             break;
@@ -849,6 +767,8 @@ inline const char* FormatIterator::streamStateFromFormat(std::ostream& out,
             TINYFORMAT_ERROR("tinyformat: Conversion spec incorrectly "
                              "terminated by end of string");
             return c;
+        default:
+            break;
     }
     if(intConversion && precisionSet && !widthSet)
     {
@@ -856,7 +776,7 @@ inline const char* FormatIterator::streamStateFromFormat(std::ostream& out,
         // padded with zeros on the left).  This isn't really supported by the
         // iostreams, but we can approximately simulate it with the width if
         // the width isn't otherwise used.
-        out.width(out.precision());
+        out.width(out.precision() + widthExtra);
         out.setf(std::ios::internal, std::ios::adjustfield);
         out.fill('0');
     }
@@ -865,119 +785,266 @@ inline const char* FormatIterator::streamStateFromFormat(std::ostream& out,
 
 
 //------------------------------------------------------------------------------
-// Private format function on top of which the public interface is implemented.
-// We enforce a mimimum of one value to be formatted to prevent bugs looking like
-//
-//   const char* myStr = "100% broken";
-//   printf(myStr);   // Parses % as a format specifier
+inline void formatImpl(std::ostream& out, const char* fmt,
+                       const detail::FormatArg* formatters,
+                       int numFormatters)
+{
+    // Saved stream state
+    std::streamsize origWidth = out.width();
+    std::streamsize origPrecision = out.precision();
+    std::ios::fmtflags origFlags = out.flags();
+    char origFill = out.fill();
+
+    for (int argIndex = 0; argIndex < numFormatters; ++argIndex)
+    {
+        // Parse the format string
+        fmt = printFormatStringLiteral(out, fmt);
+        bool spacePadPositive = false;
+        int ntrunc = -1;
+        const char* fmtEnd = streamStateFromFormat(out, spacePadPositive, ntrunc, fmt,
+                                                   formatters, argIndex, numFormatters);
+        if (argIndex >= numFormatters)
+        {
+            // Check args remain after reading any variable width/precision
+            TINYFORMAT_ERROR("tinyformat: Not enough format arguments");
+            return;
+        }
+        const FormatArg& arg = formatters[argIndex];
+        // Format the arg into the stream.
+        if(!spacePadPositive)
+            arg.format(out, fmt, fmtEnd, ntrunc);
+        else
+        {
+            // The following is a special case with no direct correspondence
+            // between stream formatting and the printf() behaviour.  Simulate
+            // it crudely by formatting into a temporary string stream and
+            // munging the resulting string.
+            std::ostringstream tmpStream;
+            tmpStream.copyfmt(out);
+            tmpStream.setf(std::ios::showpos);
+            arg.format(tmpStream, fmt, fmtEnd, ntrunc);
+            std::string result = tmpStream.str(); // allocates... yuck.
+            for(size_t i = 0, iend = result.size(); i < iend; ++i)
+                if(result[i] == '+') result[i] = ' ';
+            out << result;
+        }
+        fmt = fmtEnd;
+    }
+
+    // Print remaining part of format string.
+    fmt = printFormatStringLiteral(out, fmt);
+    if(*fmt != '\0')
+        TINYFORMAT_ERROR("tinyformat: Too many conversion specifiers in format string");
+
+    // Restore stream state
+    out.width(origWidth);
+    out.precision(origPrecision);
+    out.flags(origFlags);
+    out.fill(origFill);
+}
+
+} // namespace detail
+
+
+/// List of template arguments format(), held in a type-opaque way.
+///
+/// A const reference to FormatList (typedef'd as FormatListRef) may be
+/// conveniently used to pass arguments to non-template functions: All type
+/// information has been stripped from the arguments, leaving just enough of a
+/// common interface to perform formatting as required.
+class FormatList
+{
+    public:
+        FormatList(detail::FormatArg* formatters, int N)
+            : m_formatters(formatters), m_N(N) { }
+
+        friend void vformat(std::ostream& out, const char* fmt,
+                            const FormatList& list);
+
+    private:
+        const detail::FormatArg* m_formatters;
+        int m_N;
+};
+
+/// Reference to type-opaque format list for passing to vformat()
+typedef const FormatList& FormatListRef;
+
+
+namespace detail {
+
+// Format list subclass with fixed storage to avoid dynamic allocation
+template<int N>
+class FormatListN : public FormatList
+{
+    public:
 #ifdef TINYFORMAT_USE_VARIADIC_TEMPLATES
+        template<typename... Args>
+        explicit FormatListN(const Args&... args)
+            : FormatList(&m_formatterStore[0], N),
+            m_formatterStore { FormatArg(args)... }
+        { static_assert(sizeof...(args) == N, "Number of args must be N"); }
+#else // C++98 version
+        void init(int) {}
+#       define TINYFORMAT_MAKE_FORMATLIST_CONSTRUCTOR(n)       \
+                                                               \
+        template<TINYFORMAT_ARGTYPES(n)>                       \
+        explicit FormatListN(TINYFORMAT_VARARGS(n))            \
+            : FormatList(&m_formatterStore[0], n)              \
+        { assert(n == N); init(0, TINYFORMAT_PASSARGS(n)); }   \
+                                                               \
+        template<TINYFORMAT_ARGTYPES(n)>                       \
+        void init(int i, TINYFORMAT_VARARGS(n))                \
+        {                                                      \
+            m_formatterStore[i] = FormatArg(v1);               \
+            init(i+1 TINYFORMAT_PASSARGS_TAIL(n));             \
+        }
 
-template<typename T1>
-void format(FormatIterator& fmtIter, const T1& value1)
+        TINYFORMAT_FOREACH_ARGNUM(TINYFORMAT_MAKE_FORMATLIST_CONSTRUCTOR)
+#       undef TINYFORMAT_MAKE_FORMATLIST_CONSTRUCTOR
+#endif
+
+    private:
+        FormatArg m_formatterStore[N];
+};
+
+// Special 0-arg version - MSVC says zero-sized C array in struct is nonstandard
+template<> class FormatListN<0> : public FormatList
 {
-    fmtIter.accept(value1);
-    fmtIter.finish();
-}
-
-// General version for C++11
-template<typename T1, typename... Args>
-void format(FormatIterator& fmtIter, const T1& value1, const Args&... args)
-{
-    fmtIter.accept(value1);
-    format(fmtIter, args...);
-}
-
-#else
-
-inline void format(FormatIterator& fmtIter)
-{
-    fmtIter.finish();
-}
-
-// General version for C++98
-#define TINYFORMAT_MAKE_FORMAT_DETAIL(n)                                  \
-template<TINYFORMAT_ARGTYPES(n)>                                          \
-void format(detail::FormatIterator& fmtIter, TINYFORMAT_VARARGS(n))       \
-{                                                                         \
-    fmtIter.accept(v1);                                                   \
-    format(fmtIter TINYFORMAT_PASSARGS_TAIL(n));                          \
-}
-
-TINYFORMAT_FOREACH_ARGNUM(TINYFORMAT_MAKE_FORMAT_DETAIL)
-#undef TINYFORMAT_MAKE_FORMAT_DETAIL
-
-#endif // End C++98 variadic template emulation for format()
+    public: FormatListN() : FormatList(0, 0) {}
+};
 
 } // namespace detail
 
 
 //------------------------------------------------------------------------------
-// Implement all the main interface functions here in terms of detail::format()
+// Primary API functions
 
 #ifdef TINYFORMAT_USE_VARIADIC_TEMPLATES
 
-// C++11 - the simple case
-template<typename T1, typename... Args>
-void format(std::ostream& out, const char* fmt, const T1& v1, const Args&... args)
+/// Make type-agnostic format list from list of template arguments.
+///
+/// The exact return type of this function is an implementation detail and
+/// shouldn't be relied upon.  Instead it should be stored as a FormatListRef:
+///
+///   FormatListRef formatList = makeFormatList( /*...*/ );
+template<typename... Args>
+detail::FormatListN<sizeof...(Args)> makeFormatList(const Args&... args)
 {
-    detail::FormatIterator fmtIter(out, fmt);
-    format(fmtIter, v1, args...);
+    return detail::FormatListN<sizeof...(args)>(args...);
 }
 
-template<typename T1, typename... Args>
-std::string format(const char* fmt, const T1& v1, const Args&... args)
+#else // C++98 version
+
+inline detail::FormatListN<0> makeFormatList()
+{
+    return detail::FormatListN<0>();
+}
+#define TINYFORMAT_MAKE_MAKEFORMATLIST(n)                     \
+template<TINYFORMAT_ARGTYPES(n)>                              \
+detail::FormatListN<n> makeFormatList(TINYFORMAT_VARARGS(n))  \
+{                                                             \
+    return detail::FormatListN<n>(TINYFORMAT_PASSARGS(n));    \
+}
+TINYFORMAT_FOREACH_ARGNUM(TINYFORMAT_MAKE_MAKEFORMATLIST)
+#undef TINYFORMAT_MAKE_MAKEFORMATLIST
+
+#endif
+
+/// Format list of arguments to the stream according to the given format string.
+///
+/// The name vformat() is chosen for the semantic similarity to vprintf(): the
+/// list of format arguments is held in a single function argument.
+inline void vformat(std::ostream& out, const char* fmt, FormatListRef list)
+{
+    detail::formatImpl(out, fmt, list.m_formatters, list.m_N);
+}
+
+
+#ifdef TINYFORMAT_USE_VARIADIC_TEMPLATES
+
+/// Format list of arguments to the stream according to given format string.
+template<typename... Args>
+void format(std::ostream& out, const char* fmt, const Args&... args)
+{
+    vformat(out, fmt, makeFormatList(args...));
+}
+
+/// Format list of arguments according to the given format string and return
+/// the result as a string.
+template<typename... Args>
+std::string format(const char* fmt, const Args&... args)
 {
     std::ostringstream oss;
-    format(oss, fmt, v1, args...);
+    format(oss, fmt, args...);
     return oss.str();
 }
 
-template<typename T1, typename... Args>
-std::string format(const std::string &fmt, const T1& v1, const Args&... args)
+/// Format list of arguments to std::cout, according to the given format string
+template<typename... Args>
+void printf(const char* fmt, const Args&... args)
+{
+    format(std::cout, fmt, args...);
+}
+
+template<typename... Args>
+void printfln(const char* fmt, const Args&... args)
+{
+    format(std::cout, fmt, args...);
+    std::cout << '\n';
+}
+
+#else // C++98 version
+
+inline void format(std::ostream& out, const char* fmt)
+{
+    vformat(out, fmt, makeFormatList());
+}
+
+inline std::string format(const char* fmt)
 {
     std::ostringstream oss;
-    format(oss, fmt.c_str(), v1, args...);
+    format(oss, fmt);
     return oss.str();
 }
 
-template<typename T1, typename... Args>
-void printf(const char* fmt, const T1& v1, const Args&... args)
+inline void printf(const char* fmt)
 {
-    format(std::cout, fmt, v1, args...);
+    format(std::cout, fmt);
 }
 
-#else
+inline void printfln(const char* fmt)
+{
+    format(std::cout, fmt);
+    std::cout << '\n';
+}
 
-// C++98 - define the interface functions using the wrapping macros
 #define TINYFORMAT_MAKE_FORMAT_FUNCS(n)                                   \
                                                                           \
 template<TINYFORMAT_ARGTYPES(n)>                                          \
 void format(std::ostream& out, const char* fmt, TINYFORMAT_VARARGS(n))    \
 {                                                                         \
-    tinyformat::detail::FormatIterator fmtIter(out, fmt);                 \
-    tinyformat::detail::format(fmtIter, TINYFORMAT_PASSARGS(n));          \
+    vformat(out, fmt, makeFormatList(TINYFORMAT_PASSARGS(n)));            \
 }                                                                         \
                                                                           \
 template<TINYFORMAT_ARGTYPES(n)>                                          \
 std::string format(const char* fmt, TINYFORMAT_VARARGS(n))                \
 {                                                                         \
     std::ostringstream oss;                                               \
-    tinyformat::format(oss, fmt, TINYFORMAT_PASSARGS(n));                 \
-    return oss.str();                                                     \
-}                                                                         \
-                                                                          \
-template<TINYFORMAT_ARGTYPES(n)>                                          \
-std::string format(const std::string &fmt, TINYFORMAT_VARARGS(n))         \
-{                                                                         \
-    std::ostringstream oss;                                               \
-    tinyformat::format(oss, fmt.c_str(), TINYFORMAT_PASSARGS(n));         \
+    format(oss, fmt, TINYFORMAT_PASSARGS(n));                             \
     return oss.str();                                                     \
 }                                                                         \
                                                                           \
 template<TINYFORMAT_ARGTYPES(n)>                                          \
 void printf(const char* fmt, TINYFORMAT_VARARGS(n))                       \
 {                                                                         \
-    tinyformat::format(std::cout, fmt, TINYFORMAT_PASSARGS(n));           \
+    format(std::cout, fmt, TINYFORMAT_PASSARGS(n));                       \
+}                                                                         \
+                                                                          \
+template<TINYFORMAT_ARGTYPES(n)>                                          \
+void printfln(const char* fmt, TINYFORMAT_VARARGS(n))                     \
+{                                                                         \
+    format(std::cout, fmt, TINYFORMAT_PASSARGS(n));                       \
+    std::cout << '\n';                                                    \
 }
 
 TINYFORMAT_FOREACH_ARGNUM(TINYFORMAT_MAKE_FORMAT_FUNCS)
@@ -985,49 +1052,14 @@ TINYFORMAT_FOREACH_ARGNUM(TINYFORMAT_MAKE_FORMAT_FUNCS)
 
 #endif
 
-
-//------------------------------------------------------------------------------
-// Define deprecated wrapping macro for backward compatibility in tinyformat
-// 1.x.  Will be removed in version 2!
-#define TINYFORMAT_WRAP_FORMAT_EXTRA_ARGS
-#define TINYFORMAT_WRAP_FORMAT_N(n, returnType, funcName, funcDeclSuffix,  \
-                                 bodyPrefix, streamName, bodySuffix)       \
-template<TINYFORMAT_ARGTYPES(n)>                                           \
-returnType funcName(TINYFORMAT_WRAP_FORMAT_EXTRA_ARGS const char* fmt,     \
-                    TINYFORMAT_VARARGS(n)) funcDeclSuffix                  \
-{                                                                          \
-    bodyPrefix                                                             \
-    tinyformat::format(streamName, fmt, TINYFORMAT_PASSARGS(n));           \
-    bodySuffix                                                             \
-}                                                                          \
-
-#define TINYFORMAT_WRAP_FORMAT(returnType, funcName, funcDeclSuffix,       \
-                               bodyPrefix, streamName, bodySuffix)         \
-inline                                                                     \
-returnType funcName(TINYFORMAT_WRAP_FORMAT_EXTRA_ARGS const char* fmt      \
-                    ) funcDeclSuffix                                       \
-{                                                                          \
-    bodyPrefix                                                             \
-    tinyformat::detail::FormatIterator(streamName, fmt).finish();          \
-    bodySuffix                                                             \
-}                                                                          \
-TINYFORMAT_WRAP_FORMAT_N(1 , returnType, funcName, funcDeclSuffix, bodyPrefix, streamName, bodySuffix) \
-TINYFORMAT_WRAP_FORMAT_N(2 , returnType, funcName, funcDeclSuffix, bodyPrefix, streamName, bodySuffix) \
-TINYFORMAT_WRAP_FORMAT_N(3 , returnType, funcName, funcDeclSuffix, bodyPrefix, streamName, bodySuffix) \
-TINYFORMAT_WRAP_FORMAT_N(4 , returnType, funcName, funcDeclSuffix, bodyPrefix, streamName, bodySuffix) \
-TINYFORMAT_WRAP_FORMAT_N(5 , returnType, funcName, funcDeclSuffix, bodyPrefix, streamName, bodySuffix) \
-TINYFORMAT_WRAP_FORMAT_N(6 , returnType, funcName, funcDeclSuffix, bodyPrefix, streamName, bodySuffix) \
-TINYFORMAT_WRAP_FORMAT_N(7 , returnType, funcName, funcDeclSuffix, bodyPrefix, streamName, bodySuffix) \
-TINYFORMAT_WRAP_FORMAT_N(8 , returnType, funcName, funcDeclSuffix, bodyPrefix, streamName, bodySuffix) \
-TINYFORMAT_WRAP_FORMAT_N(9 , returnType, funcName, funcDeclSuffix, bodyPrefix, streamName, bodySuffix) \
-TINYFORMAT_WRAP_FORMAT_N(10, returnType, funcName, funcDeclSuffix, bodyPrefix, streamName, bodySuffix) \
-TINYFORMAT_WRAP_FORMAT_N(11, returnType, funcName, funcDeclSuffix, bodyPrefix, streamName, bodySuffix) \
-TINYFORMAT_WRAP_FORMAT_N(12, returnType, funcName, funcDeclSuffix, bodyPrefix, streamName, bodySuffix) \
-TINYFORMAT_WRAP_FORMAT_N(13, returnType, funcName, funcDeclSuffix, bodyPrefix, streamName, bodySuffix) \
-TINYFORMAT_WRAP_FORMAT_N(14, returnType, funcName, funcDeclSuffix, bodyPrefix, streamName, bodySuffix) \
-TINYFORMAT_WRAP_FORMAT_N(15, returnType, funcName, funcDeclSuffix, bodyPrefix, streamName, bodySuffix) \
-TINYFORMAT_WRAP_FORMAT_N(16, returnType, funcName, funcDeclSuffix, bodyPrefix, streamName, bodySuffix) \
-
+// Added for Bitcoin Core
+template<typename... Args>
+std::string format(const std::string &fmt, const Args&... args)
+{
+    std::ostringstream oss;
+    format(oss, fmt.c_str(), args...);
+    return oss.str();
+}
 
 } // namespace tinyformat