pow.h
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pow.h
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	// Copyright (c) 2009-2010 Satoshi Nakamoto
	// Copyright (c) 2009-2014 The Bitcoin developers
	// Distributed under the MIT/X11 software license, see the accompanying
	// file COPYING or http://www.opensource.org/licenses/mit-license.php.

	#ifndef BITCOIN_POW_H
	#define BITCOIN_POW_H

	#include <stdint.h>

	class CBlockIndex;
	class CBlockHeader;
	class uint256;

	unsigned int GetNextWorkRequired(const CBlockIndex* pindexLast, const CBlockHeader *pblock);

	/** Check whether a block hash satisfies the proof-of-work requirement specified by nBits */
	bool CheckProofOfWork(uint256 hash, unsigned int nBits);
	/** Check the work is more than the minimum a received block needs, without knowing its direct parent */
	bool CheckMinWork(unsigned int nBits, unsigned int nBase, int64_t deltaTime);

	void UpdateTime(CBlockHeader* block, const CBlockIndex* pindexPrev);

	uint256 GetProofIncrement(unsigned int nBits);

	#endif