BIP-327 Merged: MuSig2 for BIP340-compatible Multi-Signatures
MuSig2 is a multi-signature scheme that allows multiple signers to create a single aggregate public key and cooperatively create ordinary Schnorr signatures valid under the aggregate public key.
- The primary motivation of BIP-327 is to create a standard that allows users of different software projects to jointly control Taproot outputs.
- Potential benefits of MuSig2 include better privacy as well as fee reduction as the on-chain footprint of a MuSig2 Taproot output is essentially a single BIP340 public key, which is indistinguishable from regular, single-signer Taproot output even when they are actually controlled by multiple signers.
