consensus/ethash: implement EIP-3554 (bomb delay)
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@ -45,6 +45,11 @@ var (
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maxUncles = 2 // Maximum number of uncles allowed in a single block
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allowedFutureBlockTimeSeconds = int64(15) // Max seconds from current time allowed for blocks, before they're considered future blocks
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// calcDifficultyEip3554 is the difficulty adjustment algorithm as specified by EIP 3554.
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// It offsets the bomb a total of 9.5M blocks.
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// Specification EIP-3554: https://eips.ethereum.org/EIPS/eip-3554
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calcDifficultyEip3554 = makeDifficultyCalculator(big.NewInt(9500000))
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// calcDifficultyEip2384 is the difficulty adjustment algorithm as specified by EIP 2384.
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// It offsets the bomb 4M blocks from Constantinople, so in total 9M blocks.
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// Specification EIP-2384: https://eips.ethereum.org/EIPS/eip-2384
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@ -325,6 +330,8 @@ func CalcDifficulty(config *params.ChainConfig, time uint64, parent *types.Heade
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switch {
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case config.IsCatalyst(next):
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return big.NewInt(1)
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case config.IsLondon(next):
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return calcDifficultyEip3554(time, parent)
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case config.IsMuirGlacier(next):
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return calcDifficultyEip2384(time, parent)
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case config.IsConstantinople(next):
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