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

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By Ethan Heilman

Involving Matt Corallo, Alex+4 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 seeks to enhance Bitcoin's security against quantum and classical threats.

  • It introduces a dual signature system to enable switching algorithms to mitigate risks.

  • This aim is to maintain Bitcoin's reliability as a long-term investment and medium of exchange.

Addressing remaining points on BIP 54

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 December 30, 2025 15:59 UTC

bitcoin-dev

  • BIP 54 debate reignites, with Dashjr criticizing nLockTime's extranonce embedding as an ASIC optimization loss.

  • Rubin suggests a sparse Merkle tree to avoid smart contract issues instead of limiting transaction sizes.

  • Majority prefer pragmatic approaches, seeking balance between innovation and system stability without drastic protocol changes.

The limitations of cryptographic agility in Bitcoin

By Pieter Wuille

Involving Light, Antoine Poinsot+3 others

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Original post on February 13, 2026 16:20 UTC

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Last reply on February 13, 2026 16:20 UTC

bitcoin-dev

  • Cryptographic agility in Bitcoin involves choices in cryptographic primitives for security enhancement.

  • Hypothetical FancySig introduction creates debate on its adoption due to security versus risk considerations.

  • Consensus on cryptographic updates is crucial for Bitcoin's network security and stability amidst evolving threats.

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