Brink renews our financial support for all of our 8 Bitcoin Core engineers through 2025! Thank you to Michael Ford (fanquake), Gloria Zhao, Hennadii Stepanov, Sebastian Falbesoner, Niklas Gögge, Stéphan Vuylsteke, Fabian Jahr, and Marco De Leon for your amazing work on Bitcoin and we are proud to support you. 🙏 If you're curious about the work these engineers are doing, we have a detailed annual report in the works. In the meantime check out last year's annual report

Brink’s 2023-2024 Annual Report

A report on our 2023 progress and 2024 outlook

Up for grabs! Bitcoin Optech would like to add a Block Reorg Calculator to our site. If you would like to implement the (corrected) calculations outlined in chapter 11 of the Bitcoin white paper, we are looking for external contributions! Inquire within:

GitHub

Feature suggestion: reorg calculator · Issue #2156 · bitcoinops/bitcoinops.github.io

Greg Maxwell used to host an online calculator based on Nakamoto's code from the original Bitcoin paper that let you plug in what percentage of has...

This week's Bitcoin Core PR review club PR is #31363, "Cluster mempool: introduce TxGraph", authored by Pieter Wuille and hosted by and hosted by Gloria Zhao. Notes and questions are available on the website, including a gentle introduction to cluster mempool and mempool architecture Starting in 15 minutes!

Bitcoin Core PR Review Club

Cluster mempool: introduce TxGraph

Notes

Listen to: - Yuval Kogman’s disclosed coinjoin vulnerabilities - Jeremy Rubin's thoughts on soft fork proposals - the BDK 1.0.0 release with Steve Myers - transitory soft fork discussion

Bitcoin Optech

Bitcoin Optech Newsletter #335 Recap Podcast

Dave Harding and Mike Schmidt are joined by Yuval Kogman, Jeremy Rubin, and Steve Myers to discuss Newsletter #335.

Please take a moment to provide Optech feedback on how we are doing by filling out a short survey 🙏 View quoted note →

New Optech monthly segment: "A new monthly section summarizing proposals and discussion about changing Bitcoin’s consensus rules." View quoted note →

If you’ve thought about contributing to Bitcoin open source, I cannot recommend enough applying for the ‘Start your career in Bitcoin open source’ program. The lowest risk path to contribute to the projects you use, know, and love: Bitcoin Core, Lightning, BDK, rust-bitcoin, and more It's a 2 month, online program that is completely FREE (thank you, Chaincode) Don't wait another year. Don't wait to watch another couple Bitcoin development YT videos Get in the arena. Help build magic internet money Applications close December 31 Agenda: Week 0: RPC Scavenger Hunt Week 1: Build a wallet Week 2: Wallet management Week 3: P2P & Mining Week 4: Lightning Bring a proof of concept to life Explore the ₿OSS ecosystem Meet ₿OSS maintainers Choose a ₿OSS project and provide value Get coaching on the next step

₿OSS Challenge

₿OSS Challenge - start your career in bitcoin open source

A big thank you to the HRF who proactively and quietly donated $20,000 USD to Bitcoin Optech for expenses related to the Optech newsletter and podcast 🧡

I get the impression that this is pretty common for Optech readers. Would some periodic less-technical “Optech decoded” or “Optech translated” summary be helpful?

Absolute unit of a newsletter this week from Optech View quoted note →

👀 https://conduition.io/cryptography/quantum-hbs/

Optech's first non-newletter podcast episode is on SuperScalar. What other topics would you like to see a deep dive on? View quoted note →

Gloria Zhao, Niklas Gögge, and b10c discuss 3 recently announced Bitcoin Core vulnerabilities: - DoS vulnerability in headers sync - DoS vulnerability in inventory send queue - Crash vulnerability in compact block relay High severity: An attacker could provide a peer with a chain of low-difficulty headers, which could be used to remotely crash the node. Medium severity: Increased network activity affected block and transaction propagation and dropped connections. High severity: An attacker could remotely crash Bitcoin Core nodes by triggering an assertion in the blocktxn message handling logic.

Episode 6: Discussing Pre-25.0 Bitcoin Core Vulnerability Disclosures

Gloria Zhao, Niklas Gögge, and 0xB10C discuss the recently disclosed Bitcoin Core pre-25.0 vulnerabilities.

For those that think that nothing can get done in Bitcoin Core View quoted note →

What is Brink up to? We published a 23pg report on what engineers are working on in 2024 and got done in 2023. I hope the report is informative and transparently showcases the important work Brink is funding and our engineers are executing on.

Brink’s 2023-2024 Annual Report

A report on our 2023 progress and 2024 outlook

Should probably follow @laanwj @laanwj

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