Bitcoin TLDR

#123

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Jun 8 - Jun 13, 2026

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A new Bitcoin Improvement Proposal (BIP) is being developed to document the Low-R signature algorithm, aiming for consistency across wallet implementations to enhance security and reliability. This proposal, referencing the Bitcoin Optech's Low-r grinding page, is crucial for maintaining privacy standards and includes a call for feedback on content and test vectors source.

In response to quantum computing threats, Opus Lux has proposed a new output type for Bitcoin, labeled P2WOTS, which uses a witness version three for post-quantum security, avoiding elliptic curve cryptography. This proposal includes a 34-byte scriptPubKey and a Merkle Key Tree to enhance security, with a draft BIP available for community feedback on GitHub BIP draft PR.

Another initiative seeks to improve Bitcoin wallet recovery by introducing native language support for BIP39 recovery phrases, aiming to reduce user errors without altering cryptographic processes. Feedback is sought for this draft implementation, which maintains the English wordlist while adding multilingual support, available for review at this GitHub repository.

A discussion is underway to update Bitcoin Core's approach to Replace-by-Fee (RBF) signaling, with a proposal to remove the BIP 125 signaling due to its redundancy since the adoption of full RBF. This change, along with a forthcoming informational BIP to standardize input sequence numbers, underscores ongoing efforts to align Bitcoin's functionality with current network needs and wallet developer practices discussion point.

Active Discussions

[BIP Draft] P2P UTXO Set Sharing

27 replies

By Josie Baker

Involving Eric Voskuil, Fabian+6 others

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Original post on May 5, 2026 15:36 UTC

cyclic icon

Last reply on June 11, 2026 03:01 UTC

bitcoin-dev

  • Disagreeing in open-source development does not equate to limiting technical diversity.

  • Critiques ensure security and robustness in projects like Bitcoin Core by refining ideas.

  • Direct feedback in reviews helps avoid complexity and supports project sustainability.

Prohibit Merkle Internal Node Preimages That Encode Minimal 64-Byte Transactions

10 replies

By jeremy

Involving Antoine Poinsot, Antoine Riard+2 others

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Original post on June 1, 2026 17:46 UTC

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Last reply on June 15, 2026 17:20 UTC

bitcoin-dev

  • Manipulating blockchain proofs involves creating false UTXO appearances via specific script conditions.

  • Techniques could allow miners to select from transaction offers based on a locked UTXO height.

  • Proposed rules prohibit using deserializable transactions as interior nodes to maintain blockchain integrity.

[BIP Draft] Testnet 5

10 replies

By Murch

Involving Pol Espinasa, Anthony Towns+6 others

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Original post on June 2, 2026 11:24 UTC

cyclic icon

Last reply on June 3, 2026 21:55 UTC

bitcoin-dev

  • Murch encourages Fabian and Pol to open a PR for their drafted proposal.

  • The proposal has gained attention and received enhancement suggestions.

  • Their interaction reflects the open-source, collaborative essence of Bitcoin development.

Aligning privacy incentives in P2MR

9 replies

By Pieter Wuille

Involving conduition, Antoine Poinsot+2 others

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Original post on June 3, 2026 23:12 UTC

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Last reply on June 13, 2026 15:33 UTC

bitcoin-dev

  • Pieter discusses Bitcoin's transition to quantum-resistant cryptography.

  • He examines the feasibility of disabling elliptic curve cryptography.

  • A phased approach to adoption is advocated for strategic migration.

One Time Signatures as an Advantage?

6 replies

By Peter Todd

Involving Jason Resch, Anthony Towns+2 others

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Original post on May 20, 2026 17:41 UTC

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Last reply on June 8, 2026 10:04 UTC

bitcoin-dev

  • The scheme has vulnerabilities linked to miner's choice of fee rates.

  • It's advised to use secret 128-bit nonces in the signature tree for security.

  • Nonces should only be revealed to maintain transaction unpredictability.

A look at SHRINCS

3 replies

By Patrick Cerri

Involving conduition

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Original post on June 9, 2026 09:02 UTC

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Last reply on June 10, 2026 10:14 UTC

bitcoin-dev

  • Mobile-first blockchain systems face challenges in maintaining the 'KEY USES' value.

  • Users often misrecord 'KEY USES' or lose it, leading to security and operational issues.

  • The current method of estimating key uses by resync counts is unreliable.

Simple Setup for SPHINCS+ Bitcoin-style Address (proof-of-concept)

1 reply

By conduition

Involving 3D

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Original post on May 31, 2026 14:13 UTC

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Last reply on June 13, 2026 16:18 UTC

bitcoin-dev

  • The inquiry examines a program creating unspendable Bitcoin addresses.

  • This tool may cause Bitcoins to become permanently inaccessible, affecting their market value.

  • Concerns arise about the ethical implications and long-term market effects.

Public key recovery for EC leaves in P2MR (BIP-360)

15 replies

By AntoineP

Involving sipa, conduition+3 others

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Original post on June 6, 2026 22:00 UTC

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Last reply on June 10, 2026 22:35 UTC

delvingbitcoin

  • Future cryptocurrency security should prioritize migration options for less responsive users.

  • Emphasizing accessible updates now prepares for vulnerabilities in elliptic curve cryptography.

  • Proactive strategies ensure broader adaptation to post-quantum cryptographic solutions.

A Bitcoin-native LLM: dataset, architecture and open questions

11 replies

By l0rinc

Involving Tsua00021, 0xB10C+2 others

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Original post on June 2, 2026 14:11 UTC

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Last reply on June 11, 2026 14:27 UTC

delvingbitcoin

  • The debate on AssumeUTXO highlights divergent expert opinions on Bitcoin's code trust.

  • Some experts endorse integrating the hash, believing it fortifies existing security confidence.

  • Critics argue it deviates from standard practices and could risk the system's integrity.

Binary Fuse filters as an alternative to BIP 158 GCS

10 replies

By optout

Involving purszki, rustaceanrob

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Original post on April 19, 2026 08:09 UTC

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Last reply on June 12, 2026 07:19 UTC

delvingbitcoin

  • A large filter for every 2016 blocks has been proposed to simplify initial data handling.

  • The large filter shows a minimal size reduction of only 0.12% compared to multiple small filters.

  • This minor decrease does not justify the increased complexity of the filtering system.

Default signet reorg history was the fork at height 287766 (depth 19) deliberate?

8 replies

By ajtowns

Involving pramodkandel, 0xB10C

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Original post on June 5, 2026 11:46 UTC

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Last reply on June 8, 2026 06:55 UTC

delvingbitcoin

  • The test runs likely relate to bip54, performed on a signet.

  • They aim to demonstrate consensus cleanup in the context of slow blocks.

  • Outcomes may significantly influence blockchain technology's efficiency and stability.

Compact Isogeny PQC can replace HD wallets, key-tweaking, silent payments

6 replies

By conduition

Involving AdamISZ

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Original post on March 12, 2026 18:33 UTC

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Last reply on June 9, 2026 20:50 UTC

delvingbitcoin

  • A new study has affirmed the security of isogeny-based cryptography rerandomization.

  • This empirical validation marks a shift to recognized secure practices in cryptography.

  • Enhanced cyber protection can now be confidently implemented in digital communications.

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