Consensus cleanup soft fork
Consensus cleanup soft fork is a proposal to address several issues in Bitcoin’s consensus rules that date back to the original version of Bitcoin released in 2009.
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Primary code and documentation
Optech newsletter and website mentions
2025
- BIPs #1760 merges BIP53, which specifies a consensus change to forbid 64 byte transactions
- Bitcoin Core #32155 updates the internal miner to comply with consensus cleanup requirements
- BIPs #1800 merges BIP54, which specifies the consensus cleanup soft fork proposal
- Draft BIP published for consensus cleanup
- Announcement of updates to the consensus cleanup soft fork proposal
2024
- Discussion about fixing Murch-Zawy time warp and duplicate transactions in consensus cleanup
- Discussion about mitigating merkle tree vulnerabilities in the proposed consensus cleanup soft fork
- Notes from Bitcoin developer discussion about consensus cleanup
- Question: where exactly is the ‘off-by-one’ difficulty bug and how does it relate to time warp?
- Renewed discussion of consensus cleanup soft fork
2020
2019
- 2019 year-in-review: consensus cleanup soft fork proposal
- CoreDev.tech discussion: cleanup soft fork
- Consensus cleanup discussion: codeseparator & sighash types
- Consensus cleanup background
- Cleanup soft fork proposal
See also
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