Bitcoin Optech newsletter #336 is here: - describes a potential change to Bitcoin Core affecting miners - summarizes discussion about creating contract-level relative timelocks - discusses a proposal for an LN-Symmetry variant with optional penalties - Optech Newsletter #336 Recap on Riverside Abubakar Sadiq Ismail posted to Delving Bitcoin about a bug discovered in 2021 by Antoine Riard that results in nodes reserving 2,000 vbytes in block templates for coinbase transactions rather than the intended 1,000 vbytes... Gregory Sanders posted to Delving Bitcoin about finding a solution for a complication he discovered about a year ago when creating a proof-of-concept implementation of LN-Symmetry... Daniel Roberts posted to Delving Bitcoin about preventing a malicious channel counterparty (Mallory) from being able to delay channel settlement by deliberately broadcasting old states at a higher feerate than an honest counterparty (Bob) is paying for confirmation of the final state... Bitcoin Optech will host an audio recap discussion of this newsletter with special guests Abubakar Sadiq Ismail and Gregory Sanders on Riverside.fm Tuesday at 15:30 UTC. Join us to discuss or ask questions!
Yesterday @David A. Harding and @schmidty were joined by Yuval Kogman, Jeremy Rubin, and Steve Myers to discuss Newsletter #335: - Attacks on centralized coinjoin - ChillDKG - Changing consensus - BDK 1.0.0 Catch up:
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Bitcoin Optech newsletter #335 is here: - links to information about longstanding deanonymization vulnerabilities in software using centralized coinjoin protocols - summarizes an update to a draft BIP about the ChillDKG distributed key generation protocol compatible with scriptless threshold signing - adds a new monthly section summarizing proposals and discussion about changing Bitcoin’s consensus rules - Optech Newsletter #335 Recap on Riverside Yuval Kogman posted to the Bitcoin-Dev mailing list details about several privacy-reducing vulnerabilities in the centralized coinjoin protocols used by current versions of the Wasabi and Ginger wallets, plus past versions of the Samourai, Sparrow, and Trezor Suite software wallets... Tim Ruffing and Jonas Nick posted to the Bitcoin-Dev mailing list a link to the current draft BIP for ChillDKG, which describes a distributed key generation protocol compatible with FROST scriptless threshold signatures for Bitcoin... Changing consensus: - CTV enhancement opcodes - Adjusting difficulty beyond 256 bits - Transitory soft forks for cleanup soft forks - Quantum computer upgrade path - Consensus cleanup timewarp grace period Bitcoin Optech will host an audio recap discussion of this newsletter with special guest Yuval Kogman on Riverside.fm Tuesday at 15:30 UTC. Join us to discuss or ask questions!
Bitcoin Optech newsletter #334: 2024 Year-in-Review Special is here: - notes Bitcoin developments during each month of 2024 - feature: Vulnerability disclosures - feature: Cluster mempool - feature: P2P transaction relay - feature: Covenants and script upgrades - feature: Major releases of popular infrastructure projects - feature: Optech In 2024, Optech summarized more than two dozen vulnerability disclosures... An idea for a mempool redesign from 2023 became a particular focus for several Bitcoin Core developers throughout 2024... Fee management has always been a challenge in the decentralized Bitcoin protocol, but widespread use of contract protocols such as LN-Penalty and ongoing research into newer and more complex protocols has made it more important than ever to ensure users can pay and increase fees on demand. Bitcoin Core contributors have been working on this problem for years, and 2024 saw the public release of several new features that significantly improve the situation... Several developers devoted much of their time in 2024 towards advancing proposals for covenants, scripting upgrades, and other changes that would support advanced contract protocols such as joinpools and channel factories... Optech covered major releases of popular infrastructure projects throughout the year... In Optech’s seventh year, we published: - 51 newsletters - 35 new topic pages - over 120,000 words, a 350pg book equivalent - a wallet guide for developers - over 59hr of podcasts, with 488,000 words of transcripts w/75 guests - 200+ non-English translations Bitcoin Optech will host an audio recap discussion of this special newsletter with special guests Dave Harding, Niklas Gögge, Gloria Zhao, and Brandon Black on Riverside.fm Monday at 15:30 UTC. Join us to discuss or ask questions!