bool CheckProofOfWork(uint256 hash, unsigned int nBits);
unsigned int GetNextTargetRequired(const CBlockIndex* pindexLast, bool fProofOfStake);
int64_t GetProofOfWorkReward(unsigned int nBits, int64_t nFees=0);
-int64_t GetProofOfStakeReward(int64_t nCoinAge, unsigned int nBits, unsigned int nTime, bool bCoinYearOnly=false);
+int64_t GetProofOfStakeReward(int64_t nCoinAge, unsigned int nBits, int64_t nTime, bool bCoinYearOnly=false);
unsigned int ComputeMinWork(unsigned int nBase, int64_t nTime);
unsigned int ComputeMinStake(unsigned int nBase, int64_t nTime, unsigned int nBlockTime);
int GetNumBlocksOfPeers();