# MuSig2 v0.4.0

This package contains an exact copy of the MuSig2 code as found in
`github.com/btcsuite/btcec/v2/schnorr/musig2` at the tag `btcec/v2.2.2`.

This corresponds to the [MuSig2 BIP specification version of
`v0.4.0`](https://github.com/jonasnick/bips/blob/musig2/bip-musig2.mediawiki).

We only keep this code here to allow implementing a backward compatible,
versioned MuSig2 RPC.