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BIP 54: Consensus Cleanup

This is a BIP draft for a Consensus Cleanup soft fork. This proposal builds upon Matt Corallo's 2019 [proposal](https://github.com/TheBlueMatt/bips/blob/7f9670b643b7c943a0cc6d2197d3eabe661050c2/bip-XXXX.mediawiki), which i set to revive at the end of 2023. I eventually shared my research in a [Delving Bitcoin post](https://delvingbitcoin.org/t/great-consensus-cleanup-revival/710) in early 2024 (along with a [semi-private companion post](https://delvingbitcoin.org/t/worst-block-validation-time-i

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darosior·Updated Apr 30, 2025·1 review·0 attestations·View source
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Specification

This is a BIP draft for a Consensus Cleanup soft fork.

This proposal builds upon Matt Corallo's 2019 proposal, which i set to revive at the end of 2023. I eventually shared my research in a Delving Bitcoin post in early 2024 (along with a semi-private companion post for the redacted sensitive details). A number of people contributed ideas, testing and otherwise fruitful discussion. This led to settling on a list of mitigations, which i updated the mailing list about in February 2025.

I think it's now ready to be officially published as a BIP.

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