BIP draft: Full-Aggregation of BIP 340 Signatures

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Jul 6, 2026, 1:10:57 PM (22 hours ago) Jul 6

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Hi list,

I would like to share a BIP draft for full-aggregation of BIP 340

signatures, a standard for the DahLIAS interactive aggregate signature

scheme by Jonas Nick, Tim Ruffing, and Yannick Seurin:

Full-aggregation allows a group of signers to produce a single 64-byte

signature for a list of public key and message pairs in a two-round

signing protocol very similar to MuSig2/BIP327. The primary application

in Bitcoin would be CISA (cross-input signature aggregation).

The BIP draft text can be found here:

For inline comments, I have opened a mock pull request on my BIPs repo fork:

Feedback of any kind is much appreciated.

Best,

Fabian

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