// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2014 The Bitcoin Core developers
// Copyright (c) 2016-2024 The Hush developers
// Distributed under the GPLv3 software license, see the accompanying
// file COPYING or https://www.gnu.org/licenses/gpl-3.0.en.html
/******************************************************************************
* Copyright © 2014 - 2019 The SuperNET Developers . *
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* See the AUTHORS , DEVELOPER - AGREEMENT and LICENSE files at *
* the top - level directory of this distribution for the individual copyright *
* holder information and the developer policies on copyright and licensing . *
* *
* Unless otherwise agreed in a custom licensing agreement , no part of the *
* SuperNET software , including this file may be copied , modified , propagated *
* or distributed except according to the terms contained in the LICENSE file *
* *
* Removal or modification of this copyright notice is prohibited . *
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
# ifndef HUSH_POW_H
# define HUSH_POW_H
# include "chain.h"
# include "consensus/params.h"
# include <stdint.h>
class CBlockHeader ;
class CBlockIndex ;
class CChainParams ;
class uint256 ;
class arith_uint256 ;
unsigned int GetNextWorkRequired ( const CBlockIndex * pindexLast , const CBlockHeader * pblock , const Consensus : : Params & ) ;
unsigned int CalculateNextWorkRequired ( arith_uint256 bnAvg ,
int64_t nLastBlockTime , int64_t nFirstBlockTime ,
const Consensus : : Params & , int32_t height ) ;
/** Check whether the Equihash solution in a block header is valid */
bool CheckEquihashSolution ( const CBlockHeader * pblock , const CChainParams & ) ;
/** Check whether a block hash satisfies the proof-of-work requirement specified by nBits */
bool CheckProofOfWork ( const CBlockHeader & blkHeader , uint8_t * pubkey33 , int32_t height , const Consensus : : Params & params ) ;
CChainPower GetBlockProof ( const CBlockIndex & block ) ;
/** 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. */
int64_t GetBlockProofEquivalentTime ( const CBlockIndex & to , const CBlockIndex & from , const CBlockIndex & tip , const Consensus : : Params & ) ;
# endif // HUSH_POW_H