1 // Copyright (c) 2009-2010 Satoshi Nakamoto
2 // Copyright (c) 2009-2014 The Bitcoin Core developers
3 // Distributed under the MIT software license, see the accompanying
4 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
9 #include "consensus/params.h"
19 unsigned int GetNextWorkRequired(const CBlockIndex* pindexLast, const CBlockHeader *pblock, const Consensus::Params&);
20 unsigned int CalculateNextWorkRequired(arith_uint256 bnAvg,
21 int64_t nLastBlockTime, int64_t nFirstBlockTime,
22 const Consensus::Params&);
24 /** Check whether the Equihash solution in a block header is valid */
25 bool CheckEquihashSolution(const CBlockHeader *pblock, const CChainParams&);
27 /** Check whether a block hash satisfies the proof-of-work requirement specified by nBits */
28 bool CheckProofOfWork(uint256 hash, unsigned int nBits, const Consensus::Params&);
29 arith_uint256 GetBlockProof(const CBlockIndex& block);
31 /** Return the time it would take to redo the work difference between from and to, assuming the current hashrate corresponds to the difficulty at tip, in seconds. */
32 int64_t GetBlockProofEquivalentTime(const CBlockIndex& to, const CBlockIndex& from, const CBlockIndex& tip, const Consensus::Params&);
34 #endif // BITCOIN_POW_H