Bitcoin TLDR

#107

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Summary

Dec 8 - Dec 14, 2025

Our weekly newsletter is focused on keeping you updated on what's new in Bitcoin, and summarizes the bitcoin-dev, lightning-dev and delving bitcoin mailing lists

A meeting is set to discuss BIP 119's activation parameters, urging participants to prep with related pull requests and past meeting records, aiming for a productive dialogue on the Bitcoin Development Mailing List group source. Defenwycke's DustSweep proposal introduces a solution for reducing Bitcoin's UTXO set by proposing a transaction category to consolidate uneconomical dust, with its draft for public review on GitHub here. The exploration of hash-based post-quantum cryptographic solutions highlights their potential for Bitcoin, focusing on schemes like SPHINCS+ for their robustness against quantum attacks, with detailed insights provided in a report and supporting scripts available here and here.

A soft fork proposal addresses the Bitcoin timestamp overflow issue, suggesting a method to extend functionality without a system overhaul, relying on miner and node compliance with new rules, detailed further on Bitcoin Stack Exchange. Victor introduces a non-custodial vault system, seeking feedback on using pruned nodes within Bitcoin's PSBT workflows for efficient UTXO management, aiming for a robust solution without custodial risks. Lastly, the Bitcoin and Ethereum ecosystems see a potential bridge via SatsBridge's protocol, integrating Lightning Network with Ethereum smart contracts to enhance cross-chain wallet security and user experience, with an invitation for community engagement on their Telegram group.

Active Discussions

Motion to Activate BIP 3

31 replies

By Murch

Involving Greg Maxwell, Jon Atack+17 others

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Original post on November 5, 2025 01:10 UTC

cyclic icon

Last reply on December 2, 2025 22:46 UTC

bitcoin-dev

  • Murch proposes to revert AI/LLM guidelines in Bitcoin Improvement Proposals due to community feedback.

  • A new Changelog for BIPs aims to enhance documentation and transparency.

  • Future AI/LLM guidance in BIPs is postponed, prioritizing current initiatives.

A safe way to remove objectionable content from the blockchain

16 replies

By Nagaev Boris

Involving waxwing/ AdamISZ, Peter Todd+6 others

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Original post on November 20, 2025 01:57 UTC

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Last reply on December 9, 2025 19:32 UTC

bitcoin-dev

  • Peter highlights a flaw in Bitcoin's HTLCs using ZKP, risking transaction security.

  • Boris warns ZKP reliance may limit data access, threatening network self-sovereignty.

  • To safeguard Bitcoin's openness, Boris urges integrating data availability in ZKP designs.

[BIP Proposal] Add sp() output descriptor format for BIP352

6 replies

By Oghenovo Usiwoma

Involving Craig Raw, pyth

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Original post on December 4, 2025 06:45 UTC

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Last reply on December 12, 2025 09:18 UTC

bitcoin-dev

  • An approach to improve Bitcoin descriptors for scanning was discussed, suggesting a birthday inclusion.

  • The consensus favors existing key formats for silent payments, avoiding new key complexities.

  • A proposal for encoding multiple BIP352 labels within a 64-bit number was introduced for efficiency.

Reducing RAM requirements with dynamic dust

4 replies

By Eric Voskuil

Involving Erik Aronesty, uuowwpevskfcordh'

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Original post on December 6, 2025 16:08 UTC

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Last reply on December 12, 2025 22:22 UTC

bitcoin-dev

  • Erik Aronesty addressed Bitcoin Core skepticism in a developer forum.

  • He confirmed the issue does not affect Libbitcoin, indicating its robustness.

  • This distinction upholds the integrity and reliability of the Bitcoin protocol.

Splitting more block, addr and tx classes of network traffic

1 reply

By defenwycke

Involving Antoine Riard

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Original post on December 4, 2025 22:33 UTC

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Last reply on December 4, 2025 22:33 UTC

bitcoin-dev

  • Defenwycke critiques explicit signalling in P2P networks, suggesting a class-based model for security.

  • The email proposes adding randomness to relay behaviors to prevent topology inference attacks.

  • It advocates for integrating traffic management within a single connection to improve efficiency and security.

Dust Expiry: Clean the UTXO set from spam

36 replies

By Claire

Involving gmaxwell, RobinLinus+11 others

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Original post on May 20, 2025 01:53 UTC

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Last reply on December 14, 2025 13:24 UTC

delvingbitcoin

  • The proposal targets non-monetary Bitcoin dust to reduce spam and clutter.

  • Approximately 40% of Bitcoin Core's UTXO set is spam, identified under specific rules.

  • It suggests shifting responsibility to users, blending regulatory savvy with spam reduction efforts.

Benchmarking Bitcoin Script Evaluation for the Varops Budget (Great Script Restoration)

12 replies

By Julian

Involving ajtowns, instagibbs+1 other

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Original post on November 7, 2025 15:14 UTC

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Last reply on December 10, 2025 11:02 UTC

delvingbitcoin

  • The proposal suggests a new Bitcoin sigversion that works alongside current ones without altering them.

  • It aims to ensure the new sigversion, using Generalized Schnorr Signatures, doesn’t compromise script performance.

  • Discussion shifts towards revising varops budget for existing sigversions, highlighting the complexity of script changes.

Bitcoin Embracing MimbleWimble

11 replies

By coinjoinkillua

Involving REDBaron, vazertuche+3 others

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Original post on October 27, 2025 12:04 UTC

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Last reply on December 10, 2025 13:13 UTC

delvingbitcoin

  • Atomic swaps allow cryptocurrency exchange without intermediaries but face miner censorship issues.

  • Strategies to bypass censorship include using privacy technologies, splitting transactions, and engaging with private mining pools.

  • Decentralized exchanges provide a censorship-resistant platform for executing atomic swaps.

Non-confiscatory Transaction Weight Limit

11 replies

By ajtowns

Involving instagibbs, sipa+5 others

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Original post on May 28, 2025 19:01 UTC

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Last reply on December 13, 2025 00:14 UTC

delvingbitcoin

  • The debate focuses on managing blockchain transactions, especially on size and block stuffing issues.

  • A new proposal suggests consensus rules for transaction sizes and block space optimization.

  • Strategies for mempool management and mining aim to enhance transaction efficiency and network health.

Building a vault using blinded co-signers

2 replies

By halseth

Involving Nuh

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Original post on December 3, 2025 12:38 UTC

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Last reply on December 10, 2025 14:15 UTC

delvingbitcoin

  • The email discusses enhancing blockchain transactions with sophisticated Zero-Knowledge proofs.

  • It proposes a method using a taproot address for secure and validated spending.

  • Suggests establishing a reputation system for co-signers to improve transaction integrity.

BIP The Cat - Draft discussion

1 reply

By billymcbip

Involving Claire

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Original post on December 9, 2025 23:52 UTC

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Last reply on December 10, 2025 13:34 UTC

delvingbitcoin

  • The NACK concept introduces consensus-level UTXO confiscation in digital currencies.

  • It could change trust, security, and autonomy in blockchain, moving towards centralized control.

  • This raises debates on balancing regulation with blockchain's decentralized ethos.

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