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

27 replies

By Ethan Heilman

Involving Matt Corallo, Alex+5 others

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Original post on February 9, 2026 14:20 UTC

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Last reply on February 17, 2026 07:39 UTC

bitcoin-dev

  • The proposal suggests enhancing Bitcoin's security against quantum threats using algorithm agility.

  • It introduces a dual signature system with a primary and a secondary, more secure algorithm.

  • This aims to ensure Bitcoin's reliability as a long-term investment by mitigating future cryptographic risks.

Addressing remaining points on BIP 54

14 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 February 12, 2026 03:57 UTC

bitcoin-dev

  • Luke Dashjr criticizes BIP 54, citing missed ASIC optimization with nLockTime usage.

  • Jeremy Rubin suggests a sparse Merkle tree over limiting transaction sizes for smart contracts.

  • Consensus prefers pragmatic solutions, avoiding drastic protocol changes for ecosystem stability.

The limitations of cryptographic agility in Bitcoin

10 replies

By Pieter Wuille

Involving Light, Antoine Poinsot+6 others

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Original post on February 13, 2026 16:20 UTC

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Last reply on February 17, 2026 20:04 UTC

bitcoin-dev

  • The discussion explored cryptographic agility's impact on Bitcoin's security and adaptability.

  • Concerns were raised about individual cryptographic choices affecting Bitcoin's collective value and security.

  • The conversation highlighted the need for consensus on cryptographic updates to ensure network security.

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