Consultant/Advisor, Developer at bitcoinj.org, ConsensusJ.
Joined March 2007
- Tweets 5,504
- Following 1,381
- Followers 1,238
- Likes 6,320
65 Photos and videos
Pinned Tweet
5 Nov 2025
secp256k1-jdk is a modern, functional-style Java API with two implementations for Java, JDK, @graalvm, Kotlin, Scala, etc. It aims to be the standard library for secp256k1 in the greater JDK/JVM Bitcoin ecosystem.
Version 0.2 is now available for early integration testing.
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Sean Gilligan retweeted
Jun 6
What's better than #nix #nixos #nixpkgs ?
How about any derivation from #guix inside of Nix !
This was an idea I have had for a while.
Who wants to make a MetaPkgs ?
fzakaria.com/2026/06/05/the-…
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Sean Gilligan retweeted
May 24
quantum computing possibles, in arbitrary order
🐢 steady progress, scaling works, jour-Q in the 40-50s
🐇 breakthroughs happen, QD in the 30s
🐀 research plateaus, funding dries up, non-Shor applications are enough
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Sean Gilligan retweeted
May 20
First batch of projects onboarded, including ██████, ████, ██████, ██████, █████, ████████ and █████.
Scanning for vulns without generating AI slop has begun. Responsible disclosures to maintainers coming soon.
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Sean Gilligan retweeted
May 12
loupe
[NOUN]
1) A small magnifying tool used by jewelers to detect imperfections in gemstones.
2) An AI-powered vulnerability scanner for open-source bitcoin projects, designed by Block and Spiral to surface flaws before attackers do.
spiralbtc.substack.com/p/mee…
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May 12
"Please proceed with caution, as disassembling your Mac mini M4 involves taking it apart."
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Sean Gilligan retweeted
May 11
Yet again @github decided that someone who appeared to be earnestly contributing to a repo was a bot or whatever and banned them, nuking not only their account but also their PRs which we might reasonably have wanted to merge!
Really starting to think about moving.
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Sean Gilligan retweeted
Apr 19
Are you ready for every conversation you've ever had with AI to be leaked?
We’ve identified a security incident that involved unauthorized access to certain internal Vercel systems, impacting a limited subset of customers. Please see our security bulletin:
vercel.com/kb/bulletin/verce…
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Sean Gilligan retweeted
Apr 18
Useful to have another look at this in light of the question of whether OSS has value anymore in an LLM world
(answer: if a project is level 3 or beyond, certainly yes)
19 Dec 2023
What does it mean to be open source? When I first got involved with open source bitcoin in 2017, I thought this was a simple question. However, it is far more nuanced that I rarely see discussed. There are at least 9 different gradations ... am I missing any?
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Sean Gilligan retweeted
Apr 14
Securing the Java platform remains our #1 priority. Java is actively preparing for the transition to Post-Quantum Cryptography :-)
youtube.com/watch?v=6xh-bN4W…
"Java for the AI world"
#Java #PQC #AI
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Apr 10
Quantum attackers hate him!
This one weird trick to make your bitcoins quantum-safe!
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Sean Gilligan retweeted
Mar 26
Open Source Foundations and group-led projects are more important than ever, in times where anyone can build and publish a little tool/project/website.
Collaboration and cooperation is what will give ideas continuity, now that kick off execution is so easy and fast.
Do we really want one app, tool, web site, per individual, being published out there? How would we even keep track of things? How do we become aware of what exists? The exponential growth in number of projects is unsustainable.
As the old saying, "if you want to go fast, go alone. If you want to go further, go together".
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Sean Gilligan retweeted
Mar 10
Zero surprises here. AI is an incredible tool in the hands of experienced engineers with domain knowledge sufficient to drive the AI to do the right thing. For this you need a clear understanding of application architecture from end to end.
Mar 10
Amazon is holding a mandatory meeting about AI breaking its systems. The official framing is "part of normal business." The briefing note describes a trend of incidents with "high blast radius" caused by "Gen-AI assisted changes" for which "best practices and safeguards are not yet fully established." Translation to human language: we gave AI to engineers and things keep breaking?
The response for now? Junior and mid-level engineers can no longer push AI-assisted code without a senior signing off. AWS spent 13 hours recovering after its own AI coding tool, asked to make some changes, decided instead to delete and recreate the environment (the software equivalent of fixing a leaky tap by knocking down the wall). Amazon called that an "extremely limited event" (the affected tool served customers in mainland China).
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Feb 18
Lima
12 Dec 2025
Last month we shipped Lima v2.0, our biggest release yet🎉
What’s new:
-Plugin System for VM driver and CLI
-MCP tools for secure AI agents
-GPU acceleration with Krunkit driver
-URL scheme plugin
More in the @CloudNativeFdn blog: cncf.io/blog/2025/12/11/lima…
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Sean Gilligan retweeted
Feb 18
NixOS template for Lima by @msgilligan
```
limactl start github:nixos-lima
```
github.com/nixos-lima/nixos-…
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Sean Gilligan retweeted
Feb 17
I reported this phishing app weeks ago to @Apple’s legal team for trademark violation in the hope they would take swift action and remove it.
The app remains on the @Appstore. @AppleSupport appears unable or unwilling to manage fraud on their platform.
Feb 16
🚨ALERT!🚨The fake Sparrow mobile wallet scammer is back. This time masquerading as an expense tracker. Anyone entering their seed phrase will have their wallet emptied. How does Apple let this keep happening? @AppStore @AppleSupport @CorySwan @TomerStrolight @ProofOfMoney
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31 Dec 2025
First they came for the Flipper Zeros, then the Raspberry Pis…
30 Dec 2025
I'm feeling targeted right now... blog.adafruit.com/2025/12/30…
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Sean Gilligan retweeted
30 Dec 2025
🎯 2026: Let's make it the Year of Java in the Terminal
xam.dk/blog/lets-make-2026-t…
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Sean Gilligan retweeted
21 Nov 2025
People underestimate how insanely much work @glozow (and @theinstagibbs and a few others) have put into substantially restructuring the way Bitcoin Core relays transactions so that protocols like Lightning, Ark, and Spark can be radically simpler.
We owe them immense gratitude.
20 Nov 2025
1 year later: we now have two compatible implementations supporting 0-fee channels (eclair and LDK) and the spec is final: github.com/lightning/bolts/p…
Huge thanks to @glozow and @theinstagibbs who made it possible by working on mempool policy 🙏
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