Remotely reachable assertion crash in Bitcoin Core <v25.0: bitcoincore.org/en/2024/10/08/… Very happy that this is finally public, please upgrade your nodes if you haven't already!

Understanding Silent Payments - PART TWO 🔍 In this second installment of our Silent Payments series written by benma, we’re taking an in-depth look at the technical workings of your BitBox and how it securely supports silent payments. 👇 bitbox.swiss/blog/understan…

Bitcoin Optech newsletter #327 is here: - describes a timeout tree channel factories proposal - summarizes a draft BIP for DLEQ proofs when generating silent payments - adds DLEQ and duplex micropayment channels topics - #327 Recap on Twitter Spaces bitcoinops.org/en/newsletters…

libsecp256k1 v0.6.0 is out! Featuring the highly anticipated musig module and other improvements. In particular, the API functions now use a significantly more robust method to clear secrets from the stack before returning. Full change log: github.com/bitcoin-core/s… Thanks to

Ledger's and bitcoin-core's MuSig2 implementations successfully signed today both 2-of-2 MuSig2 keypath spend and a script spend. Help review Ava Chow's PR, and cross-test with your own implementations, to help bring this past the finish line! github.com/bitcoin/bitcoi…

as a lispy warmup for the upcoming advent of code, did an old day1 exercise in Guile Scheme (how hard can it be?) and almost went insane😱xkcd.com/297/

Only TIL about qemu-user and feel like an idiot for having copied and executed cross-compiled unit test binaries directly on the target for many years 😶yurovsky.github.io/2016/12/14/qem…

⏩SwiftSync - smarter synchronization with hints Near-stateless, fully parallelizable validation. Validation is at the heart of Bitcoin. Optimizing performance is invaluable. It's fast. Early benchmarks show a 5.28x speedup (h/t Sebastian 🟩🥕) 👇Go read! gist.github.com/RubenSomsen/a6…

Bitcoin Optech newsletter #349 is here: - describes a proposal for speeding up Bitcoin Core initial block download, with a proof-of-concept implementation that shows a roughly 5x speed up compared to Bitcoin Core’s defaults - recaps the "Stricter internal handling of invalid

Bitcoin Core v29.0 was released! It is available from: bitcoincore.org/en/download/ Release notes: bitcoincore.org/en/releases/29…

Announcing DahLIAS! 🎉 The first crypto protocol for full cross-input signature aggregation that allows reusing Bitcoin's curve secp256k1. ✅ 64B sigs ✅ Verify is ~2x faster than half-agg'd Schnorr sigs ✅ 2-round signing Kudos to the team: Tim Ruffing Yannick Seurin! 👇

Bob Ross discusses Bitcoin bugs in Frenchglish with mistery masked man, tune in!

OpenBSD 7.7 is officially out now! 🐡 See what's new here: openbsd.org/77.html

On Monday's Livestream (May 5 @ 12 PDT) I'll be reviewing OP_RETURN and discussing github moderation twitch.tv/achow101 I will: - Look at the history of OP_RETURN's implementation - Evaluate the arguments from the ML post and PR for and against the change (cont'd)

github.com/bitcoin/bitcoi… The legacy wallet is no more

Check out this overview of why you should get involved with bitcoin open source software and ways we can help you get started!

A statement on Bitcoin Core development and transaction relay policy - bitcoincore.org/en/2025/06/06/…

Nominations are open for the 2025 Bitcoin Research Prize! Submit papers that made an impact on Bitcoin or Lightning published after 2021: forms.gle/9fo6wUtQ5iaWtQ… Here is the talk by last year’s winners ncklr & Chelsea Komlo --> youtu.be/9j1smRr_Ebc

One year ago Marco (Marco) embarked on a year long Brink fellowship in our London office. Today, after a year of progress and contributions, we’re happy to bring him on as a full-time Bitcoin Core engineer…!

Excited to share "Provable Cryptography for Bitcoin: An Introduction" - a comprehensive workbook that teaches formal security definitions and proofs through hands-on exercises. Solutions included!