// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2012 The Bitcoin developers
-// Copyright (c) 2011-2012 The PPCoin developers
+// Copyright (c) 2011-2013 The PPCoin developers
// Distributed under the MIT/X11 software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#ifndef BITCOIN_MAIN_H
#include "bignum.h"
#include "net.h"
#include "script.h"
+#include "scrypt_mine.h"
#ifdef WIN32
#include <io.h> /* for _commit */
static const unsigned int MAX_BLOCK_SIZE_GEN = MAX_BLOCK_SIZE/2;
static const unsigned int MAX_BLOCK_SIGOPS = MAX_BLOCK_SIZE/50;
static const unsigned int MAX_ORPHAN_TRANSACTIONS = MAX_BLOCK_SIZE/100;
-static const int64 MIN_TX_FEE = 10000;
-static const int64 MIN_RELAY_TX_FEE = 10000;
+static const int64 MIN_TX_FEE = CENT;
+static const int64 MIN_RELAY_TX_FEE = CENT;
static const int64 MAX_MONEY = 2000000000 * COIN;
-static const int64 MAX_MINT_PROOF_OF_WORK = 9999 * COIN;
+static const int64 MAX_MINT_PROOF_OF_WORK = 100 * COIN;
static const int64 MIN_TXOUT_AMOUNT = MIN_TX_FEE;
inline bool MoneyRange(int64 nValue) { return (nValue >= 0 && nValue <= MAX_MONEY); }
-static const int COINBASE_MATURITY = 100;
+static const int COINBASE_MATURITY_PPC = 500;
// Threshold for nLockTime: below this value it is interpreted as block number, otherwise as UNIX timestamp.
static const int LOCKTIME_THRESHOLD = 500000000; // Tue Nov 5 00:53:20 1985 UTC
+static const int STAKE_TARGET_SPACING = 10 * 60; // 10-minute block spacing
+static const int STAKE_MIN_AGE = 60 * 60 * 24 * 30; // minimum age for coin age
+static const int STAKE_MAX_AGE = 60 * 60 * 24 * 90; // stake age of full weight
+
#ifdef USE_UPNP
static const int fHaveUPnP = true;
#else
static const int fHaveUPnP = false;
#endif
-static const uint256 hashGenesisBlockOfficial("0x000000007c82d1f0aa2896b01bf533a8cc26a1f44790be4ceb4ecde7bee24add");
-static const uint256 hashGenesisBlockTestNet("0x00000007199508e34a9ff81e6ec0c477a4cccff2a4767a8eee39c11db367b008");
+static const uint256 hashGenesisBlockOfficial("0x00000a060336cbb72fe969666d337b87198b1add2abaa59cca226820b32933a4");
+static const uint256 hashGenesisBlockTestNet("0x00000a060336cbb72fe969666d337b87198b1add2abaa59cca226820b32933a4");
+
+static const int64 nMaxClockDrift = 2 * 60 * 60; // two hours
extern CScript COINBASE_FLAGS;
extern std::map<uint256, CBlockIndex*> mapBlockIndex;
extern std::set<std::pair<COutPoint, unsigned int> > setStakeSeen;
extern uint256 hashGenesisBlock;
+extern unsigned int nStakeMinAge;
+extern int nCoinbaseMaturity;
extern CBlockIndex* pindexGenesisBlock;
extern int nBestHeight;
-extern uint64 nBestChainTrust;
-extern uint64 nBestInvalidTrust;
+extern CBigNum bnBestChainTrust;
+extern CBigNum bnBestInvalidTrust;
extern uint256 hashBestChain;
extern CBlockIndex* pindexBest;
extern unsigned int nTransactionsUpdated;
extern uint64 nLastBlockTx;
extern uint64 nLastBlockSize;
+extern int64 nLastCoinStakeSearchInterval;
extern const std::string strMessageMagic;
extern double dHashesPerSec;
extern int64 nHPSTimerStart;
void FormatHashBuffers(CBlock* pblock, char* pmidstate, char* pdata, char* phash1);
bool CheckWork(CBlock* pblock, CWallet& wallet, CReserveKey& reservekey);
bool CheckProofOfWork(uint256 hash, unsigned int nBits);
+int64 GetProofOfWorkReward(unsigned int nBits);
int64 GetProofOfStakeReward(int64 nCoinAge);
unsigned int ComputeMinWork(unsigned int nBase, int64 nTime);
int GetNumBlocksOfPeers();
bool IsInitialBlockDownload();
std::string GetWarnings(std::string strFor);
-bool Reorganize(CTxDB& txdb, CBlockIndex* pindexNew);
uint256 WantedByOrphan(const CBlock* pblockOrphan);
const CBlockIndex* GetLastBlockIndex(const CBlockIndex* pindex, bool fProofOfStake);
void BitcoinMiner(CWallet *pwallet, bool fProofOfStake);
return !(a == b);
}
+ std::string ToStringShort() const
+ {
+ return strprintf(" %s %d", prevout.hash.ToString().c_str(), prevout.n);
+ }
+
std::string ToString() const
{
std::string str;
return !(a == b);
}
+ std::string ToStringShort() const
+ {
+ return strprintf(" out %s %s", FormatMoney(nValue).c_str(), scriptPubKey.ToString(true).c_str());
+ }
+
std::string ToString() const
{
if (IsEmpty()) return "CTxOut(empty)";
if (scriptPubKey.size() < 6)
return "CTxOut(error)";
- return strprintf("CTxOut(nValue=%s, scriptPubKey=%s)", FormatMoney(nValue).c_str(), scriptPubKey.ToString().substr(0,30).c_str());
+ return strprintf("CTxOut(nValue=%s, scriptPubKey=%s)", FormatMoney(nValue).c_str(), scriptPubKey.ToString().c_str());
}
void print() const
bool IsCoinBase() const
{
- return (vin.size() == 1 && vin[0].prevout.IsNull() && vout.size() == 1);
+ return (vin.size() == 1 && vin[0].prevout.IsNull() && vout.size() >= 1);
}
bool IsCoinStake() const
{
// ppcoin: the coin stake transaction is marked with the first output empty
- return (vin.size() > 0 && vout.size() == 2 && vout[0].IsEmpty());
+ return (vin.size() > 0 && (!vin[0].prevout.IsNull()) && vout.size() >= 2 && vout[0].IsEmpty());
}
/** Check for standard transaction types
}
+ std::string ToStringShort() const
+ {
+ std::string str;
+ str += strprintf("%s %s", GetHash().ToString().c_str(), IsCoinBase()? "base" : (IsCoinStake()? "stake" : "user"));
+ return str;
+ }
+
std::string ToString() const
{
std::string str;
bool CheckTransaction() const;
bool AcceptToMemoryPool(CTxDB& txdb, bool fCheckInputs=true, bool* pfMissingInputs=NULL);
bool GetCoinAge(CTxDB& txdb, uint64& nCoinAge) const; // ppcoin: get transaction coin age
- bool CheckProofOfStake(unsigned int nBits) const;
protected:
const CTxOut& GetOutputFor(const CTxIn& input, const MapPrevTx& inputs) const;
// network and disk
std::vector<CTransaction> vtx;
- // ppcoin: block signature - signed by coin base txout[0]'s owner
+ // ppcoin: block signature - signed by one of the coin base txout[N]'s owner
std::vector<unsigned char> vchBlockSig;
// memory only
void SetNull()
{
- nVersion = 1;
+ nVersion = 2;
hashPrevBlock = 0;
hashMerkleRoot = 0;
nTime = 0;
uint256 GetHash() const
{
- return Hash(BEGIN(nVersion), END(nNonce));
+ uint256 thash;
+ void * scratchbuff = scrypt_buffer_alloc();
+
+ scrypt_hash(CVOIDBEGIN(nVersion), sizeof(block_header), UINTBEGIN(thash), scratchbuff);
+
+ scrypt_buffer_free(scratchbuff);
+
+ return thash;
}
+
int64 GetBlockTime() const
{
return (int64)nTime;
void UpdateTime(const CBlockIndex* pindexPrev);
+ // ppcoin: entropy bit for stake modifier if chosen by modifier
+ unsigned int GetStakeEntropyBit() const
+ {
+ uint160 hashSig = Hash160(vchBlockSig);
+ if (fDebug && GetBoolArg("-printstakemodifier"))
+ printf("GetStakeEntropyBit: hashSig=%s", hashSig.ToString().c_str());
+ hashSig >>= 159; // take the first bit of the hash
+ if (fDebug && GetBoolArg("-printstakemodifier"))
+ printf(" entropybit=%d\n", hashSig.Get64());
+ return hashSig.Get64();
+ }
+
// ppcoin: two types of block: proof-of-work or proof-of-stake
bool IsProofOfStake() const
{
return error("CBlock::WriteToDisk() : AppendBlockFile failed");
// Write index header
+ unsigned char pchMessageStart[4];
+ GetMessageStart(pchMessageStart, true);
unsigned int nSize = fileout.GetSerializeSize(*this);
fileout << FLATDATA(pchMessageStart) << nSize;
CBlockIndex* pnext;
unsigned int nFile;
unsigned int nBlockPos;
- uint64 nChainTrust;// ppcoin: trust score of chain, in the unit of coin-days
+ CBigNum bnChainTrust; // ppcoin: trust score of block chain
int nHeight;
- bool fProofOfStake; // ppcoin: is the block of proof-of-stake type
+ int64 nMint;
+ int64 nMoneySupply;
+
+ unsigned int nFlags; // ppcoin: block index flags
+ enum
+ {
+ BLOCK_PROOF_OF_STAKE = (1 << 0), // is proof-of-stake block
+ BLOCK_STAKE_ENTROPY = (1 << 1), // entropy bit for stake modifier
+ BLOCK_STAKE_MODIFIER = (1 << 2), // regenerated stake modifier
+ };
+
+ uint64 nStakeModifier; // hash modifier for proof-of-stake
+ unsigned int nStakeModifierChecksum; // checksum of index; in-memeory only
+
+ // proof-of-stake specific fields
COutPoint prevoutStake;
unsigned int nStakeTime;
+ uint256 hashProofOfStake;
// block header
int nVersion;
nFile = 0;
nBlockPos = 0;
nHeight = 0;
- nChainTrust = 0;
- fProofOfStake = true;
+ bnChainTrust = 0;
+ nMint = 0;
+ nMoneySupply = 0;
+ nFlags = 0;
+ nStakeModifier = 0;
+ nStakeModifierChecksum = 0;
+ hashProofOfStake = 0;
prevoutStake.SetNull();
nStakeTime = 0;
nFile = nFileIn;
nBlockPos = nBlockPosIn;
nHeight = 0;
- nChainTrust = 0;
- fProofOfStake = block.IsProofOfStake();
- if (fProofOfStake)
+ bnChainTrust = 0;
+ nMint = 0;
+ nMoneySupply = 0;
+ nFlags = 0;
+ nStakeModifier = 0;
+ nStakeModifierChecksum = 0;
+ hashProofOfStake = 0;
+ if (block.IsProofOfStake())
{
+ SetProofOfStake();
prevoutStake = block.vtx[1].vin[0].prevout;
nStakeTime = block.vtx[1].nTime;
}
return (int64)nTime;
}
- int64 GetBlockTrust() const
+ CBigNum GetBlockTrust() const
{
- return (nChainTrust - (pprev? pprev->nChainTrust : 0));
+ CBigNum bnTarget;
+ bnTarget.SetCompact(nBits);
+ if (bnTarget <= 0)
+ return 0;
+ return (IsProofOfStake()? (CBigNum(1)<<256) / (bnTarget+1) : 1);
}
bool IsInMainChain() const
bool CheckIndex() const
{
- return IsProofOfWork() ? CheckProofOfWork(GetBlockHash(), nBits) : true;
+ return true;
}
bool EraseBlockFromDisk()
bool IsProofOfWork() const
{
- return !fProofOfStake;
+ return !(nFlags & BLOCK_PROOF_OF_STAKE);
}
bool IsProofOfStake() const
{
- return fProofOfStake;
+ return (nFlags & BLOCK_PROOF_OF_STAKE);
+ }
+
+ void SetProofOfStake()
+ {
+ nFlags |= BLOCK_PROOF_OF_STAKE;
+ }
+
+ unsigned int GetStakeEntropyBit() const
+ {
+ return ((nFlags & BLOCK_STAKE_ENTROPY) >> 1);
+ }
+
+ bool SetStakeEntropyBit(unsigned int nEntropyBit)
+ {
+ if (nEntropyBit > 1)
+ return false;
+ nFlags |= (nEntropyBit? BLOCK_STAKE_ENTROPY : 0);
+ return true;
+ }
+
+ bool GeneratedStakeModifier() const
+ {
+ return (nFlags & BLOCK_STAKE_MODIFIER);
+ }
+
+ void SetStakeModifier(uint64 nModifier, bool fGeneratedStakeModifier)
+ {
+ nStakeModifier = nModifier;
+ if (fGeneratedStakeModifier)
+ nFlags |= BLOCK_STAKE_MODIFIER;
}
std::string ToString() const
{
- return strprintf("CBlockIndex(nprev=%08x, pnext=%08x, nFile=%d, nBlockPos=%-6d nChainTrust=%"PRI64d" nHeight=%d, fProofOfStake=%d prevoutStake=(%s), nStakeTime=%d merkle=%s, hashBlock=%s)",
- pprev, pnext, nFile, nBlockPos, nChainTrust, nHeight,
- fProofOfStake, prevoutStake.ToString().c_str(), nStakeTime,
+ return strprintf("CBlockIndex(nprev=%08x, pnext=%08x, nFile=%d, nBlockPos=%-6d nHeight=%d, nMint=%s, nMoneySupply=%s, nFlags=(%s)(%d)(%s), nStakeModifier=%016"PRI64x", nStakeModifierChecksum=%08x, hashProofOfStake=%s, prevoutStake=(%s), nStakeTime=%d merkle=%s, hashBlock=%s)",
+ pprev, pnext, nFile, nBlockPos, nHeight,
+ FormatMoney(nMint).c_str(), FormatMoney(nMoneySupply).c_str(),
+ GeneratedStakeModifier() ? "MOD" : "-", GetStakeEntropyBit(), IsProofOfStake()? "PoS" : "PoW",
+ nStakeModifier, nStakeModifierChecksum,
+ hashProofOfStake.ToString().c_str(),
+ prevoutStake.ToString().c_str(), nStakeTime,
hashMerkleRoot.ToString().substr(0,10).c_str(),
GetBlockHash().ToString().substr(0,20).c_str());
}
READWRITE(hashNext);
READWRITE(nFile);
READWRITE(nBlockPos);
- READWRITE(nChainTrust);
READWRITE(nHeight);
- READWRITE(fProofOfStake);
- if (fProofOfStake)
+ READWRITE(nMint);
+ READWRITE(nMoneySupply);
+ READWRITE(nFlags);
+ READWRITE(nStakeModifier);
+ if (IsProofOfStake())
{
READWRITE(prevoutStake);
READWRITE(nStakeTime);
+ READWRITE(hashProofOfStake);
}
else if (fRead)
{
const_cast<CDiskBlockIndex*>(this)->prevoutStake.SetNull();
const_cast<CDiskBlockIndex*>(this)->nStakeTime = 0;
+ const_cast<CDiskBlockIndex*>(this)->hashProofOfStake = 0;
}
// block header
bool CheckSignature()
{
CKey key;
- if (!key.SetPubKey(ParseHex("0487ca85b6ae9d311f996c7616d20d0c88a5b4f07d25e78f419019f35cce6522acf978b2d99f0e7a58db1f120439e5c1889266927854aa57c93956c2569188a539")))
+ if (!key.SetPubKey(ParseHex("043fa441fd4203d03f5df2b75ea14e36f20d39f43e7a61aa7552ab9bcd7ecb0e77a3be4585b13fcdaa22ef6e51f1ff6f2929bec2494385b086fb86610e33193195")))
return error("CAlert::CheckSignature() : SetPubKey failed");
if (!key.Verify(Hash(vchMsg.begin(), vchMsg.end()), vchSig))
return error("CAlert::CheckSignature() : verify signature failed");
git://git.novaco.in / novacoin.git / blobdiff