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New paper 🎉: “On the Adaptive Security of Key-Unique Threshold Signatures” with Chelsea Komlo and Mary Maller. eprint.iacr.org/2025/943

Happy to share a new paper by myself and co-authors Elizabeth Crites and Mary Maller. We investigate the feasibility of proving adaptive security for a large class of (well-known) threshold signatures that we refer to as “key-unique”. eprint.iacr.org/2025/943

Using FROST for t-of-n wallets is powerful, but the Distributed Key Generation (DKG) part has been notoriously difficult to implement securely. My talk at Real World Crypto 2025 presents Blockstream Research's draft ChillDKG BIP as a ready-to-implement solution.

Great to see another example of FROST being used in practice! 💪🎊

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

I had so much fun and it was an honor to give this acceptance talk for the Bitcoin research prize last year, alongside ncklr! It’s amazing to see how Bitcoin’s development is progressing including with MuSig2/FROST.

An irritated rant: There's a million snark papers out there with some variant of - split your witness into a matrix, commit separately to each row, and then you can get various proof size verifier time tradeoffs for inner product, maybe by also doing it recursively. The original

Anonymity isn't about taking elaborate means to obfuscate your actions, it's just people doing the least to distinguish themselves from each other. Security by obscurity not only doesn't help but it can even cause you to stand out more.

Adding to my life goals to write a paper this clever and fun 🙌

Wrong. If privacy matters, just use Zcash 🛡️. If you want to get to zcash use NEAR Intents.

Looking forward to being there! 🙌

And generally start caring after something bad has happened that would have been prevented by decentralization and/or better security (I.e, the emergence of threshold signatures after Mt. Gox).