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Addressing remaining points on BIP 54

12 replies

By Antoine Poinsot

Involving Antoine Riard, Matt Corallo+3 others

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Original post on December 30, 2025 15:59 UTC

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Last reply on January 30, 2026 04:08 UTC

bitcoin-dev

  • BIP 54 debate resurfaces with critiques on coinbase transaction nLockTime optimization loss.

  • Jeremy Rubin suggests a new sparse Merkle tree to address 64-byte transaction limits.

  • Consensus emphasizes pragmatic solutions over major protocol changes for Bitcoin's stability.

Algorithm Agility for Bitcoin to maintain security in the face of quantum and classic breaks in the signature algorithms

1 reply

By Ethan Heilman

Involving Erik Aronesty, Brandon Black+2 others

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Original post on February 9, 2026 14:20 UTC

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Last reply on February 10, 2026 23:13 UTC

bitcoin-dev

  • The proposal enhances Bitcoin's security against quantum computing and algorithm breaks.

  • It introduces a dual signature system with a primary and a secondary algorithm for emergencies.

  • The system includes infrastructure updates and uses BIP 360 for future cryptographic threats.

Bip54: add sequence, timestamp (and version) to GBT

By Sjors Provoost

Involving Melvin Carvalho

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Original post on February 9, 2026 19:37 UTC

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Last reply on February 9, 2026 19:37 UTC

bitcoin-dev

  • BIP54 aims to standardize `nLockTime` and `nSequence` in the coinbase transaction to aid future compatibility.

  • It introduces `coinbase_locktime`, `coinbase_sequence`, and `coinbase_version` keys for better transaction guidelines.

  • Compliance with these changes ensures mining software is prepared for potential protocol adjustments without further updates.

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