int64 static GetProofOfWorkReward(unsigned int nBits)
{
- CBigNum bnSubsidyLimit = 9999 * COIN; // subsidy amount for difficulty 1
+ CBigNum bnSubsidyLimit = MAX_MINT_PROOF_OF_WORK;
CBigNum bnTarget;
bnTarget.SetCompact(nBits);
CBigNum bnTargetLimit = bnProofOfWorkLimit;
static const int64 MIN_TX_FEE = 10000;
static const int64 MIN_RELAY_TX_FEE = 10000;
static const int64 MAX_MONEY = 2000000000 * COIN;
+static const int64 MAX_MINT_PROOF_OF_WORK = 9999 * COIN;
inline bool MoneyRange(int64 nValue) { return (nValue >= 0 && nValue <= MAX_MONEY); }
static const int COINBASE_MATURITY = 100;
// Threshold for nLockTime: below this value it is interpreted as block number, otherwise as UNIX timestamp.
return false;
BOOST_FOREACH(PAIRTYPE(const CWalletTx*, unsigned int) pcoin, setCoins)
{
+ // Attempt to add more inputs of the same key
if (pcoin.first->vout[pcoin.second].scriptPubKey == txNew.vout[1].scriptPubKey && pcoin.first->GetHash() != txNew.vin[0].prevout.hash)
{
+ // Stop adding more inputs if value is already pretty significant
+ if (nCredit > MAX_MINT_PROOF_OF_WORK)
+ break;
+ // Stop adding inputs if reached reserve limit
if (nCredit + pcoin.first->vout[pcoin.second].nValue > nBalance - nReserveBalance)
break;
+ // Do not add additional significant input
+ if (pcoin.first->vout[pcoin.second].nValue > MAX_MINT_PROOF_OF_WORK)
+ continue;
txNew.vin.push_back(CTxIn(pcoin.first->GetHash(), pcoin.second));
nCredit += pcoin.first->vout[pcoin.second].nValue;
vwtxPrev.push_back(pcoin.first);
if (!SignSignature(*this, *pcoin, txNew, nIn++))
return error("CreateCoinStake : failed to sign coinstake");
}
+
+ // Limit size
+ unsigned int nBytes = ::GetSerializeSize(txNew, SER_NETWORK, PROTOCOL_VERSION);
+ if (nBytes >= MAX_BLOCK_SIZE_GEN/5)
+ return false;
+
+ // Successfully generated coinstake
return true;
}