Sebastian 🟩🥕 @theStack

Passionate about #bitcoin (Core contributor since 2019), nature, OpenBSD, books, bass, beer & chess 🏞️ PGP: 6A8F 9C26 6528 E25A EB1D 7731 C237 1D91 CB71 6EA7 github.com/theStack Vienna Joined March 2009

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ncklr @n1ckler

3 weeks ago

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!

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Brink @bitcoinbrink

2 months ago

One year ago Marco (@macrohead7) 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…!

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Chaincode Labs @ChaincodeLabs

3 months ago

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 @n1ckler & @chelseakomlo --> youtu.be/9j1smRr_Ebc

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Bitcoin Core Project @bitcoincoreorg

4 months ago

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

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Bitcoin Dev Project @Bitcoin_Devs

5 months ago

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

Matthew Vuk @matthewvuk2

5 months ago

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

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ReproducibilityMatters @the_charlatan_

5 months ago

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

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Ava Chow @achow101

5 months ago

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)

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OpenBSD @openbsd

5 months ago

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

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Antoine Poinsot @darosior

5 months ago

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

Shinobi @brian_trollz

5 months ago

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

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ncklr @n1ckler

6 months ago

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: @real_or_random @yannickseurin! 👇

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Bitcoin Core Project @bitcoincoreorg

6 months ago

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

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Ruben Somsen @SomsenRuben

6 months ago

⏩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 @theStack) 👇Go read! gist.github.com/RubenSomsen/a6…

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Bitcoin Optech @bitcoinoptech

6 months ago

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…

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Sebastian 🟩🥕 @theStack

10 months ago

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…

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Sebastian 🟩🥕 @theStack

10 months ago

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/

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Salvatore Ingala @salvatoshi

11 months ago

Ledger's and bitcoin-core's MuSig2 implementations successfully signed today both 2-of-2 MuSig2 keypath spend and a script spend. Help review @achow101's PR, and cross-test with your own implementations, to help bring this past the finish line! github.com/bitcoin/bitcoi…

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Bitcoin Optech @bitcoinoptech

11 months ago

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…

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ncklr @n1ckler

11 months ago

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…

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BitBox @BitBoxSwiss

12 months ago

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…

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Niklas Gögge @dergoegge

12 months ago

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!