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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 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 suggests Bitcoin should adapt to different signature algorithms for future security.

  • A dual signature system, with a primary and emergency algorithm, is introduced for resilience.

  • Supporting new wallet standards and software modifications are essential for this security upgrade.

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's debate reignites, conflicting on nLockTime's use for extranonce and ASIC optimization concerns.

  • Jeremy Rubin proposes a sparse Merkle tree over restricting transaction sizes, facing skepticism.

  • Consensus prefers pragmatic solutions over drastic protocol changes, aiming for Bitcoin ecosystem's stability.

The limitations of cryptographic agility in Bitcoin

By Pieter Wuille

Involving Light, Antoine Poinsot+4 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

  • The Bitcoin community debates cryptographic agility to enhance security and adaptability.

  • Concerns arise over fungibility impact due to divergent preferences for cryptographic primitives.

  • Consensus on upgrades and the transition to new standards like FancySig is challenging.

Great Consensus Cleanup Revival

90 replies

By AntoineP

Involving ajtowns, sjors+14 others

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Original post on March 24, 2024 19:53 UTC

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Last reply on February 13, 2026 21:31 UTC

delvingbitcoin

  • The Great Consensus Cleanup targets Bitcoin protocol flaws to enhance security and efficiency.

  • It proposes adjustments and constraints to tackle vulnerabilities, like the timewarp exploit.

  • Community debate emerges over proposals affecting scalability and protocol functionality.

SuperScalar: Laddered Timeout-Tr - ee-StructuredDecker-Wattenhofer Factories

33 replies

By ZmnSCPxj

Involving ariard, t-bast+3 others

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Original post on September 16, 2024 20:08 UTC

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Last reply on February 13, 2026 16:30 UTC

delvingbitcoin

  • The SuperScalar mechanism enhances Bitcoin Lightning Network's liquidity without blockchain changes.

  • It employs Decker-Wattenhofer mechanisms, timeout trees, and laddering strategies for scalability.

  • Practical implementation includes incentivizing user activity and optimizing tree structures for efficiency.

Major BIP 360 Update

21 replies

By cryptoquick

Involving sipa, ajtowns+8 others

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Original post on December 19, 2025 20:46 UTC

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Last reply on February 13, 2026 23:02 UTC

delvingbitcoin

  • Ethan Heilman, Isabel Foxen Duke, and Hunter Beast rewrote BIP 360 for clarity.

  • BIP 360 introduces "Pay-to-Tapscript-Hash" to combat quantum threats, omitting key path spend.

  • The update adds Python and Rust test vectors, inviting community review for quantum resistance.

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