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[79.135.106.28]) by gmr-mx.google.com with ESMTPS id ffacd0b85a97d-47aa44f3832si134012f8f.8.2026.07.06.04.53.49 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 06 Jul 2026 04:53:49 -0700 (PDT) Received-SPF: pass (google.com: domain of fjahr@protonmail.com designates 79.135.106.28 as permitted sender) client-ip=79.135.106.28; Date: Mon, 06 Jul 2026 11:53:45 +0000 To: Bitcoin Development Mailing List From: "'Fabian' via Bitcoin Development Mailing List" Subject: [bitcoindev] BIP draft: Full-Aggregation of BIP 340 Signatures Message-ID: <75t3ixAqup9wRTr9PyKDXNBQHHN3MnIMiDBHKhrzo_B9gGUH0gsa8Ni8tXrjDdhWf2UDsL7Jh3iRsCQ0A7fLU0NhttxFsaqQBi17zU89iYQ=@protonmail.com> Feedback-ID: 5067558:user:proton X-Pm-Message-ID: 9c77a939171949d2cadbabbe690e2a580b3e0318 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="b1=_tRmykV6hNWMFBCF49qC9IDaaqzTMFWCewW66LxrXm0" X-Original-Sender: fjahr@protonmail.com X-Original-Authentication-Results: gmr-mx.google.com; dkim=pass header.i=@protonmail.com header.s=protonmail3 header.b=Ma9oXG64; spf=pass (google.com: domain of fjahr@protonmail.com designates 79.135.106.28 as permitted sender) smtp.mailfrom=fjahr@protonmail.com; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=protonmail.com X-Original-From: Fabian Reply-To: Fabian Precedence: list Mailing-list: list bitcoindev@googlegroups.com; contact bitcoindev+owners@googlegroups.com List-ID: X-Google-Group-Id: 786775582512 List-Post: , List-Help: , List-Archive: , List-Unsubscribe: , X-Spam-Score: -1.0 (-) --b1=_tRmykV6hNWMFBCF49qC9IDaaqzTMFWCewW66LxrXm0 Content-Type: text/plain; charset="UTF-8" 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: https://eprint.iacr.org/2025/692 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: https://github.com/fjahr/bips/blob/4b34e86d0040edad6cba3f7518b33472a11ebeaf/bip-XXXX.mediawiki For inline comments, I have opened a mock pull request on my BIPs repo fork: https://github.com/fjahr/bips/pull/4 Feedback of any kind is much appreciated. Best, Fabian -- You received this message because you are subscribed to the Google Groups "Bitcoin Development Mailing List" group. To unsubscribe from this group and stop receiving emails from it, send an email to bitcoindev+unsubscribe@googlegroups.com. To view this discussion visit https://groups.google.com/d/msgid/bitcoindev/75t3ixAqup9wRTr9PyKDXNBQHHN3MnIMiDBHKhrzo_B9gGUH0gsa8Ni8tXrjDdhWf2UDsL7Jh3iRsCQ0A7fLU0NhttxFsaqQBi17zU89iYQ%3D%40protonmail.com. --b1=_tRmykV6hNWMFBCF49qC9IDaaqzTMFWCewW66LxrXm0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi li= st,

I would like to share a BIP draft for f= ull-aggregation of BIP 340
signatures, a standard fo= r 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 6= 4-byte
signature for a list of public key and messag= e pairs in a two-round
signing protocol very similar= to MuSig2/BIP327. The primary application
in Bitcoi= n would be CISA (cross-input signature aggregation).

<= /div>
The BIP draft text can be found here:

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

<= div>Feedback of any kind is much appreciated.

Best,
Fabian

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