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Bitcoin Magazine
Not ECDSA. Not Schnorr. Meet DahLIAS.
Aggregate signatures aren’t new. They’ve been around since the early 2000s. But building one that actually works in Bitcoin’s security model, with Bitcoin’s elliptic curve, has never been proven. Developers speculated it might be possible. They shared hand-wavy sketches and said, “maybe it’d work like MuSig2, but across transaction inputs.” The idea lingered for years as developer folklore, close, never provably confirmed.
That changed recently, when Jonas Nick and Tim Ruffing of Blockstream Research, together with Yannick Seurin of Ledger, published a paper that turned this cryptographic ghost story into a concrete,…
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