Bitcoin TLDR

#115

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Summary

Feb 2 - Feb 8, 2026

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

The recent discussions within the Bitcoin development community encompass a range of topics aimed at enhancing the protocol's efficiency, security, and functionality. A notable proposal addresses performance issues in the Silent Payments module by suggesting a "K_max" protocol limit to mitigate the impact of transactions with a large number of recipients, a change documented in a draft for a Bitcoin Improvement Proposal (BIP) available for review here. Meanwhile, advancements in the bitcoin backbone have been introduced, including support for compact-block BIP152 and improvements in transaction synchronization, with detailed discussions about further enhancements exploring interface extensions for blockchain data interaction, as shared on bitcoinbackbone.org.

In academic contributions, a paper titled "Market Power and the Bitcoin Protocol" challenges the conventional wisdom regarding Bitcoin miners' behavior by suggesting that miners may strategically forego certain transaction fees to influence average fees over time, indicating a complex economic interplay within the network. Concurrently, a conceptual exploration of Bitcoin's transaction selection and block assembly processes highlights the intricate economic incentives and marginal trade-offs miners navigate, suggesting an optimization logic that significantly affects transaction inclusion and block utilization, as detailed in discussions found at delvingbitcoin.org.

Additionally, the introduction of Boomerang, a novel Bitcoin cold storage protocol, aims to enhance security and resistance to coercion without altering consensus mechanisms, emphasizing a non-deterministic withdrawal process detailed here. Lastly, the release of Bitcoin Inquisition version 29.2 incorporates several proposed consensus changes, including support for BIP 118 and BIP 119, aiming to refine protocol functionality, with further information available on GitHub. These discussions and developments reflect a dynamic and evolving ecosystem focused on improving the robustness and capabilities of the Bitcoin network.

Active Discussions

Addressing remaining points on BIP 54

13 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 January 30, 2026 04:08 UTC

bitcoin-dev

  • Antoine explains constraining nSequence ensures correct timelock validation in Bitcoin BIP.

  • This constraint prevents duplicate transactions, ensuring unique transaction IDs post-BIP 34.

  • He addresses critique and suggests expanding documentation to clarify enforcement from genesis block.

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

16 replies

By Julian

Involving ajtowns, instagibbs+2 others

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Original post on November 7, 2025 15:14 UTC

cyclic icon

Last reply on February 8, 2026 15:07 UTC

delvingbitcoin

  • New opcodes enhance Bitcoin's scripting for efficient cryptographic applications.

  • The [OP_CAT based zkp verifier](https://bitcoinmagazine.com/technical/a-zero-knowledge-proof-is-verified-on-bitcoin-for-the-first-time-in-history) is a groundbreaking, lightweight implementation.

  • Future exploration into opcodes like OP_MUL could further optimize blockchain computations.

Disposing of "dust attack" UTXOs

15 replies

By sipa

Involving bubb1es, andrewtoth+5 others

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Original post on January 25, 2026 17:20 UTC

cyclic icon

Last reply on February 8, 2026 10:25 UTC

delvingbitcoin

  • The email compares Dandelion and private broadcast methods for cryptocurrency privacy.

  • It questions the reliability of Tor/I2P and Dandelion's effectiveness against DoS attacks.

  • It highlights the complexities in achieving transaction privacy in cryptocurrencies.

OP_CC: A simple introspection opcode to enable cheaper consolidations

15 replies

By CubicEarth

Involving billymcbip, reardencode+6 others

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Original post on December 30, 2025 12:53 UTC

cyclic icon

Last reply on February 7, 2026 13:48 UTC

delvingbitcoin

  • Smaller blocks may reduce privacy by discouraging techniques that obscure transactions.

  • Larger blocks could enhance privacy but may lead to less efficient resource use.

  • The trade-off between block size and privacy highlights the complexity of optimizing blockchain.

Major BIP 360 Update

14 replies

By cryptoquick

Involving sipa, ajtowns+4 others

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Original post on December 19, 2025 20:46 UTC

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Last reply on February 6, 2026 22:21 UTC

delvingbitcoin

  • The importance of naming the Bitcoin Improvement Proposal was discussed, emphasizing community input.

  • Acknowledgement was given to individuals' contributions to spend script optionality in the proposal.

  • An inquiry about concerns beyond the name and spending rules opened dialogue for further refinement.

SHRINCS: 324-byte stateful post-quantum signatures with static backups

14 replies

By gmaxwell

Involving jonasnick, conduition+1 other

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Original post on December 11, 2025 08:40 UTC

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Last reply on February 7, 2026 17:12 UTC

delvingbitcoin

  • Utilizing a single recovery key for multiple digital signatures simplifies management while ensuring security.

  • The approach balances convenience with privacy concerns, mitigating risks through infrequent use.

  • It offers a cost-effective solution for blockchain inefficiencies while prioritizing user privacy.

BLISK: Boolean circuit Logic Integrated into the Single Key

13 replies

By ZmnSCPxj

Involving olkurbatov, nkohen+2 others

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Original post on January 26, 2026 23:23 UTC

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Last reply on February 5, 2026 15:40 UTC

delvingbitcoin

  • The email discusses converting complex AND/OR sequences to CNF, especially including NOT gates' handling.

  • It notes challenges in applying CNF in systems without NOT gate equivalents, like Bitcoin.

  • The conversation also explores simplifying multisignature protocols by abstracting Boolean gate policies.

Would OP_SUCCESS (OP_CAT) be spent?

11 replies

By AntoineP

Involving Nuh, 1440000bytes+1 other

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Original post on February 3, 2026 19:41 UTC

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Last reply on February 7, 2026 18:00 UTC

delvingbitcoin

  • Upgrade hooks facilitate safer Bitcoin network upgrades, minimizing risk and enhancing security.

  • Soft forks modify consensus rules, emphasizing Bitcoin's decentralized decision-making process.

  • The approach to Bitcoin governance must be robust and flexible, securing broad community consensus.

Bithoven: A Formally Verified, Imperative Smart Contract Language for Bitcoin

7 replies

By ftw2100

Involving ChrisCho-H, GaloisField2718+1 other

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Original post on January 6, 2026 18:23 UTC

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Last reply on February 6, 2026 23:07 UTC

delvingbitcoin

  • Bithoven prioritizes strong static analysis over expressiveness in its design philosophy.

  • Its approach limits support for applications resembling covenants.

  • This focus ensures robust analysis capabilities, even at the expense of functionality.

Bitcoin as Digital Latin: Asymptotic Ossification and the End of Semantic Drift

1 reply

By ZmnSCPxj

Involving brandenwithane

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Original post on January 25, 2026 05:18 UTC

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Last reply on February 3, 2026 11:18 UTC

delvingbitcoin

  • Bitcoin's halvening events impact blockchain's stability, similar to the necessity of DNA stability.

  • Changes at Bitcoin's foundational level risk causing chainsplits detrimental to Lightning Network operators.

  • Resistance from LN node operators against non-beneficial changes stresses their influence on network stability.

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