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.

This topic description is a stub. We would welcome a pull request providing more background information about the topic.

Primary code and documentation

• bip-cleanup

Optech newsletter and website mentions

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

• Discussion of minimum safe transaction sizes

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

• Soft fork activation

• CVE-2017-12842: fake SPV proofs using 64-byte transactions

  
  

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