unsigned int GetNextWorkRequired(const CBlockIndex* pindexLast, const CBlockHeader *pblock, const Consensus::Params& params) { unsigned int retarget = DIFF_DGW; // mainnet/regtest share a configuration if (Params().NetworkIDString() == CBaseChainParams::MAIN || Params().NetworkIDString() == CBaseChainParams::REGTEST) { retarget = DIFF_DGW; } else { retarget = DIFF_DGW; } // Bitcoin style retargeting if (retarget == DIFF_BTC) { return GetNextWorkRequiredBTC(pindexLast, pblock, params); } // Retarget using Kimoto Gravity Wave else if (retarget == DIFF_KGW) { return KimotoGravityWell(pindexLast, params); } // Retarget using Dark Gravity Wave 3 by default return DarkGravityWave(pindexLast, params); }
unsigned int GetNextWorkRequired(const CBlockIndex* pindexLast, const CBlockHeader *pblock, const Consensus::Params& params) { // Most recent algo first if (pindexLast->nHeight + 1 >= params.nPowDGWHeight) { return DarkGravityWave(pindexLast, pblock, params); } else if (pindexLast->nHeight + 1 >= params.nPowKGWHeight) { return KimotoGravityWell(pindexLast, params); } else { return GetNextWorkRequiredBTC(pindexLast, pblock, params); } }
unsigned int GetNextWorkRequired(const CBlockIndex* pindexLast, const CBlockHeader *pblock, const Consensus::Params& params) { if (pindexLast->nHeight <= 101631) { return GetNextWorkRequiredV1(pindexLast, pblock, params); } else if (pindexLast->nHeight > 101631 && pindexLast->nHeight != 137161 && pindexLast->nHeight <= 181200) { return GetNextWorkRequiredEMA(pindexLast, pblock, params); } else if (pindexLast->nHeight == 137161) { return (0x1b034c51); } else if (pindexLast->nHeight > 181200 && pindexLast->nHeight < 806000) { return GetNextWorkRequiredV2(pindexLast, pblock, params); } else { return DarkGravityWave(pindexLast, params); } return GetNextWorkRequiredV2(pindexLast, pblock, params); }
unsigned int GetNextWorkRequired(const CBlockIndex* pindexLast, const CBlockHeader *pblock) { unsigned int retarget = DIFF_DGW; if (Params().NetworkID() != CBaseChainParams::TESTNET) { if (pindexLast->nHeight + 1 >= 34140) retarget = DIFF_DGW; else if (pindexLast->nHeight + 1 >= 15200) retarget = DIFF_KGW; else retarget = DIFF_BTC; } else { if (pindexLast->nHeight + 1 >= 2000) retarget = DIFF_DGW; else retarget = DIFF_BTC; } // Default Bitcoin style retargeting if (retarget == DIFF_BTC) { unsigned int nProofOfWorkLimit = Params().ProofOfWorkLimit().GetCompact(); // Genesis block if (pindexLast == NULL) return nProofOfWorkLimit; // Only change once per interval if ((pindexLast->nHeight+1) % Params().Interval() != 0) { if (Params().AllowMinDifficultyBlocks()) { // Special difficulty rule for testnet: // If the new block's timestamp is more than 2* 2.5 minutes // then allow mining of a min-difficulty block. if (pblock->GetBlockTime() > pindexLast->GetBlockTime() + Params().TargetSpacing()*2) return nProofOfWorkLimit; else { // Return the last non-special-min-difficulty-rules-block const CBlockIndex* pindex = pindexLast; while (pindex->pprev && pindex->nHeight % Params().Interval() != 0 && pindex->nBits == nProofOfWorkLimit) pindex = pindex->pprev; return pindex->nBits; } } return pindexLast->nBits; } // Dash legacy for testnet int64_t blockstogoback = Params().Interval()-1; if ((pindexLast->nHeight+1) != Params().Interval()) blockstogoback = Params().Interval(); // Go back by what we want to be 1 day worth of blocks const CBlockIndex* pindexFirst = pindexLast; for (int i = 0; pindexFirst && i < blockstogoback; i++) pindexFirst = pindexFirst->pprev; assert(pindexFirst); // Limit adjustment step int64_t nActualTimespan = pindexLast->GetBlockTime() - pindexFirst->GetBlockTime(); LogPrintf(" nActualTimespan = %d before bounds\n", nActualTimespan); if (nActualTimespan < Params().TargetTimespan()/4) nActualTimespan = Params().TargetTimespan()/4; if (nActualTimespan > Params().TargetTimespan()*4) nActualTimespan = Params().TargetTimespan()*4; // Retarget uint256 bnNew; uint256 bnOld; bnNew.SetCompact(pindexLast->nBits); bnOld = bnNew; bnNew *= nActualTimespan; bnNew /= Params().TargetTimespan(); if (bnNew > Params().ProofOfWorkLimit()) bnNew = Params().ProofOfWorkLimit(); /// debug print LogPrintf("GetNextWorkRequired RETARGET at %d\n", pindexLast->nHeight + 1); LogPrintf("Params().TargetTimespan() = %d nActualTimespan = %d\n", Params().TargetTimespan(), nActualTimespan); LogPrintf("Before: %08x %s\n", pindexLast->nBits, bnOld.ToString()); LogPrintf("After: %08x %s\n", bnNew.GetCompact(), bnNew.ToString()); return bnNew.GetCompact(); } // Retarget using Kimoto Gravity Wave else if (retarget == DIFF_KGW) { return KimotoGravityWell(pindexLast); } // Retarget using Dark Gravity Wave 3 else if (retarget == DIFF_DGW) { return DarkGravityWave(pindexLast); } return DarkGravityWave(pindexLast); }
Target GetNextTargetRequired(const Block& blockLast, const Block& block) override { return DarkGravityWave(blockLast, block, blockLast.Height >= 99999); }