Bitcoin TLDR

#135

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Summary

Oct 12 - Oct 15, 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 newly developed btc-safe is a watch-only Bitcoin multisig coordinator that improves the security of multisignature transactions by allowing co-signers to independently sign transactions from separate devices, with the transaction only broadcasting after meeting a minimum approval threshold. This tool supports a variety of hardware wallets and software solutions and includes advanced security features such as TOTP two-factor authentication and role-specific account management, enhancing its functionality and user security. The complete codebase and a trial version on a signet test network are available for interested users and developers at this GitHub link and can try it here. Source URL: https://delvingbitcoin.org/t/open-source-bitcoin-multisig-coordinator-shared-signing-queue-hardware-wallets-live-signet-demo/2957.

Bitcoin's evolution from a peer-to-peer electronic cash system to a reserve asset highlights significant shifts, including its increased accumulation by large entities and decreased use in everyday transactions. This transformation raises questions about Bitcoin's role in reinforcing economic disparities and suggests a potential departure from its democratizing ambitions, prompting discussions about alternative digital currencies like "humanitycoin" aimed at more egalitarian principles. Source URL: https://delvingbitcoin.org/t/from-peer-to-peer-cash-to-elite-settlement-layer-is-the-21m-cap-building-a-new-aristocracy/2959.

A new protocol integrates with Bitcoin Improvement Proposals to enhance the security of multiparty transactions using cryptographic techniques like elliptic curve cryptography and a discrete logarithm proof mechanism. This protocol ensures robust security in multiparty signing and remains compatible with existing Bitcoin protocols, contributing to the efficiency and interoperability within the Bitcoin ecosystem. Further cryptographic analysis and peer reviews are anticipated to solidify the protocol's security claims. Source URL: https://delvingbitcoin.org/t/silent-payments-for-multiparty-wallets/2960.

The release candidate for Bitcoin Core v32.0rc4 is now available, marking a significant step towards the final release of Bitcoin Core v32.0, assuming no critical issues arise during testing. Interested individuals can download the binaries and access preliminary release notes and a detailed testing guide through Bitcoin Core's official website and GitHub. Feedback from this testing phase is crucial for the upcoming official release. Source URL: https://delvingbitcoin.org/t/bitcoin-core-32-0rc4-is-now-available/2958.

Active Discussions

[BIP Draft] P2P UTXO Set Sharing

29 replies

By Anthony Towns

Involving Eric Voskuil, Fabian+7 others

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Original post on May 5, 2026 15:36 UTC

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Last reply on October 15, 2026 08:42 UTC

bitcoin-dev

  • Recent discussions suggest hardcoding UTXO data snapshot details at blockchain height 935,000.

  • Enhancements include tagged hash use for UTXO set syncing, improving efficiency and reducing data ambiguity.

  • An exploratory tool on GitHub aids in UTXO data management and integrity verification.

Lichen: L2s In CHannels ENforced on bitcoin

2 replies

By waxwing/ AdamISZ

Involving Dustin Ray

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Original post on October 11, 2026 15:03 UTC

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Last reply on October 12, 2026 12:18 UTC

bitcoin-dev

  • Promoting privacy-enhanced bitcoin systems enhances user freedom and transaction speeds.

  • Integrating advanced cryptographic techniques like Groth16 into Bitcoin poses increased vulnerabilities.

  • Ongoing research in cryptocurrency focuses on developing efficient verification systems for complex computations.

TCP hole punching for Bitcoin nodes behind home NATs?

22 replies

By 0xB10C

Involving sipa, ajtowns+11 others

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Original post on May 11, 2026 11:05 UTC

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Last reply on October 17, 2026 03:12 UTC

delvingbitcoin

  • New strategies optimize node connection in Bitcoin Core without compromising privacy.

  • Methods like using a Tor service enhance anonymity and security for network nodes.

  • Other strategies involve node pairing or ensuring continuous connectivity during full capacity.

What does "post-quantum" actually mean for a Bitcoin L2 when settlement still happens on a non-PQ L1?

10 replies

By Hal_03

Involving AdamISZ, ZmnSCPxj+1 other

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Original post on July 14, 2026 19:01 UTC

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Last reply on October 14, 2026 18:54 UTC

delvingbitcoin

  • The PQ L2 solution must securely operate on a quantum-vulnerable L1 blockchain.

  • Scripthash addresses and asset transfer protocols are central to securing funds against quantum threats.

  • Implementing OTS schemes requires enhanced signature verification for true quantum resistance.

Silent Payments coinbase

6 replies

By marathon-gary

Involving Anzus_GemWallet, Seldenthuis+1 other

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Original post on August 24, 2026 19:47 UTC

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Last reply on October 13, 2026 13:18 UTC

delvingbitcoin

  • The proposed system features a dual-payout mechanism for varying cryptocurrency transaction sizes.

  • Privacy is enhanced by serialized keys and domain tweaks, ensuring secure and private transferences.

  • Technical adjustments in client software are required to support the new payout system.

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