Multi-Signature support #2
Description
We want to add support for multi-signatures like:
- Schnorr see also https://medium.com/cryptoadvance/how-schnorr-signatures-may-improve-bitcoin-91655bcb4744
- BLS see also
https://medium.com/cryptoadvance/bls-signatures-better-than-schnorr-5a7fe30ea716
However, also consider:
https://medium.com/cryptoadvance/ecdsa-is-not-that-bad-two-party-signing-without-schnorr-or-bls-1941806ec36f