Bitcoin TLDR

#99

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Summary

Oct 13 - Oct 19, 2025

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A developer's experiment on compact block relay within the Bitcoin network, using a Knots node with specific configurations, demonstrated a 90% success rate in block reconstruction, indicating efficient synchronization and potential for enhancing network scalability. The findings, emphasizing the role of transaction pools and peer requests in compact block relay efficiency, are detailed on Uncensored Tech Substack and have sparked further discussion on GitHub regarding improvements to the Bitcoin protocol.

The release of Bitcoin Core version 29.2 introduces a suite of bug fixes, performance enhancements, and updated translations, aiming to bolster the software's functionality and user experience. This iteration, which supports a wide range of operating systems, also brings improvements across peer-to-peer networking, the mempool, RPC, CI, and documentation, with contributions from a diverse group of developers detailed on Bitcoin Core's official site.

Abdel's blog post explores the proposed introduction of OP_STARK_VERIFY to Tapscript, aiming to enable on-chain verification of STARK proofs to support scalability, post-quantum signatures, and privacy-enhanced transactions within Bitcoin. This initiative underscores the technical and consensus challenges of integrating advanced cryptographic methods into the blockchain, inviting community feedback on the proposal and its potential impact on Bitcoin's protocol here.

Finally, updated simulations of a new reputation algorithm demonstrate its effectiveness against specific network attacks, ensuring robustness and maintaining transaction reliability without adversely affecting legitimate users. The algorithm's deployment aims to enhance network resilience, with ongoing real-world data analysis to refine its effectiveness, highlighting the community's role in testing and feedback as detailed in this analysis.

Active Discussions

[BIP Proposal] Limit ScriptPubkey Size >= 520 Bytes Consensus.

32 replies

By Casey Rodarmor

Involving /dev /fd0, Andrew Poelstra+15 others

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Original post on October 2, 2025 20:42 UTC

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Last reply on October 22, 2025 08:07 UTC

bitcoin-dev

  • Luke Dashjr and Greg Maxwell debated Bitcoin's future script pubkey modifications.

  • They discussed key roles of variable-length fields in supporting advanced features.

  • A cautious approach to core changes is crucial for Bitcoin's future enhancements.

Stats on compact block reconstructions

41 replies

By 1440000bytes

Involving 0xB10C, ajtowns+10 others

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Original post on August 2, 2024 12:08 UTC

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Last reply on October 16, 2025 05:04 UTC

delvingbitcoin

  • Compact Block Relay enhances blockchain block propagation efficiency.

  • CBR minimizes data transmission, reducing latency and bandwidth in block exchange.

  • The full report details CBR testing outcomes, optimizing blockchain infrastructure.

Sharing block templates

23 replies

By ajtowns

Involving gmaxwell, sipa+6 others

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Original post on August 5, 2025 19:08 UTC

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Last reply on October 17, 2025 03:32 UTC

delvingbitcoin

  • Experiments with Bitcoin transactions reveal insights into Replace-By-Fee (RBF) occurrences.

  • Outdated templates and delayed data requests contribute to template inaccuracies.

  • Proposing delayed template sharing could reduce outdated information and RBF issues.

Eclipsing Bitcoin Nodes with BGP Interception Attacks

8 replies

By cedarctic

Involving fjahr, gmaxwell+1 other

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Original post on September 4, 2025 14:08 UTC

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Last reply on October 14, 2025 19:28 UTC

delvingbitcoin

  • The email explores the importance of preparatory research in launching effective fingerprinting attacks on networks.

  • It mentions TxProbe's uncertain effectiveness against such attacks and underscores the need for ongoing research.

  • The author advocates for educational efforts to enhance network security and the repurposing of tools for cybersecurity enhancement.

Concept Review: B-SSL (Bitcoin Secure Signing Layer) Covenant-Free Vault Model Using Taproot, CSV, and CLTV

8 replies

By scoresby

Involving ilghan, marathon-gary

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Original post on October 11, 2025 11:42 UTC

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Last reply on October 26, 2025 11:57 UTC

delvingbitcoin

  • The inquiry addresses how a digital wallet's transaction requires dual signatures.

  • It explores the CSV timelock's role, allowing transactions after one day without delay.

  • Concerns are raised about the wallet's security and the immediate withdrawal of coins.

CISA and Privacy

7 replies

By 1440000bytes

Involving AdamISZ, ajtowns+2 others

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Original post on April 22, 2024 21:24 UTC

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Last reply on October 19, 2025 12:49 UTC

delvingbitcoin

  • Despite lower JoinMarket fees, coinjoin transaction volume did not increase significantly.

  • The fee reduction's impact on user behavior suggests other factors deter participation.

  • Further research is needed to understand dynamics affecting coinjoin use and enhance privacy.

Proposal: Pluggable Filter Framework

5 replies

By 1440000bytes

Involving AdamISZ, garland+1 other

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Original post on October 15, 2025 03:49 UTC

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Last reply on October 15, 2025 15:55 UTC

delvingbitcoin

  • The mempool models potential Bitcoin transactions, influenced by policies like `dustrelayfee`.

  • Adjusting the Bitcoin dust limit impacts transaction standards and network operations.

  • Links offer insights into Bitcoin's transaction policies and real-world mempool behavior.

Chain Code Delegation: Private Access Control for Bitcoin Keys

5 replies

By jurvis

Involving jaonoctus, marathon-gary+1 other

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Original post on July 15, 2025 00:41 UTC

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Last reply on October 15, 2025 03:40 UTC

delvingbitcoin

  • The author proposes a Bitcoin Improvement Proposal draft for review on GitHub.

  • The proposal aims to enhance the Bitcoin protocol, inviting community input.

  • Feedback is sought to refine and secure the proposal for the Bitcoin network.

LN routing and caveats

4 replies

By garlonicon

Involving aqua, AdamISZ

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Original post on September 22, 2025 13:20 UTC

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Last reply on October 15, 2025 16:15 UTC

delvingbitcoin

  • The Lightning Network's limited direct transfers lead to a preference for sidechains.

  • Sidechains offer unrestricted transactions without repetitive fees, unlike the Lightning Network.

  • Technical barriers like fees and liquidity impact the Lightning Network's adoption over sidechains.

Determining BlockTemplate Fee Increase Using Fee Rate Diagram

2 replies

By ismaelsadeeq

Involving sipa

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Original post on October 13, 2025 14:52 UTC

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Last reply on October 13, 2025 18:42 UTC

delvingbitcoin

  • Bitcoin Core v30 introduces a `waitnext()` RPC for optimized block template selection by miners.

  • A new strategy uses Cluster Mempool to adjust block templates for fee increases without full rebuilds.

  • An asynchronous Block Template Manager is proposed to enhance transaction processing efficiency, minimizing core lockups.

Bitcoin Core v30.0 Released

2 replies

By jsarenik

Involving fanquake

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Original post on October 12, 2025 09:19 UTC

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Last reply on October 14, 2025 07:59 UTC

delvingbitcoin

  • The `blocks` directory uses 97.6GB, showing it's the primary storage consumer.

  • `Indexes` take up 11.6GB, indicating significant data for blockchain queries and validation.

  • `Wallets` and `chainstate` directories occupy minimal and notable space, respectively, for wallet data and blockchain state.

Peer-observer: A tool and infrastructure for monitoring the Bitcoin P2P network for attacks and anomalies

2 replies

By 0xB10C

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Original post on September 17, 2025 12:08 UTC

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Last reply on October 17, 2025 16:22 UTC

delvingbitcoin

  • A demo of the peer-observer is now live, featuring two nodes for public exploration.

  • The instance was enabled by server resources sponsored through a collaboration with lclhost.org.

  • Technical details and infrastructure setup are available on GitHub for interested developers.

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