bool CheckProofOfWork(uint256 hash, unsigned int nBits);
unsigned int GetNextTargetRequired(const CBlockIndex* pindexLast, bool fProofOfStake);
-int64 GetProofOfWorkReward(unsigned int nBits);
+int64 GetProofOfWorkReward(unsigned int nBits, int64 nFees=0);
int64 GetProofOfStakeReward(int64 nCoinAge, unsigned int nBits, unsigned int nTime, bool bCoinYearOnly=false);
unsigned int ComputeMinWork(unsigned int nBase, int64 nTime);
unsigned int ComputeMinStake(unsigned int nBase, int64 nTime, unsigned int nBlockTime);