From 17b1be26617268504a8ef3a6ee3c5c6400bfb63a Mon Sep 17 00:00:00 2001 From: Martin Holst Swende Date: Fri, 7 May 2021 14:04:54 +0200 Subject: [PATCH] consensus/ethash: implement EIP-3554 (bomb delay) --- consensus/ethash/consensus.go | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/consensus/ethash/consensus.go b/consensus/ethash/consensus.go index 249c2f65eb..492fc83538 100644 --- a/consensus/ethash/consensus.go +++ b/consensus/ethash/consensus.go @@ -45,6 +45,11 @@ var ( maxUncles = 2 // Maximum number of uncles allowed in a single block allowedFutureBlockTimeSeconds = int64(15) // Max seconds from current time allowed for blocks, before they're considered future blocks + // calcDifficultyEip3554 is the difficulty adjustment algorithm as specified by EIP 3554. + // It offsets the bomb a total of 9.5M blocks. + // Specification EIP-3554: https://eips.ethereum.org/EIPS/eip-3554 + calcDifficultyEip3554 = makeDifficultyCalculator(big.NewInt(9500000)) + // calcDifficultyEip2384 is the difficulty adjustment algorithm as specified by EIP 2384. // It offsets the bomb 4M blocks from Constantinople, so in total 9M blocks. // Specification EIP-2384: https://eips.ethereum.org/EIPS/eip-2384 @@ -325,6 +330,8 @@ func CalcDifficulty(config *params.ChainConfig, time uint64, parent *types.Heade switch { case config.IsCatalyst(next): return big.NewInt(1) + case config.IsLondon(next): + return calcDifficultyEip3554(time, parent) case config.IsMuirGlacier(next): return calcDifficultyEip2384(time, parent) case config.IsConstantinople(next):