BIP Draft: "FROST Signing"

[Sivaram Dhakshinamoorthy]

Hello Everyone,

I’m proposing a BIP draft for the FROST threshold signing protocol and am
seeking feedback from the community. The draft includes design details,
usage guidelines, security considerations, and a Python implementation
with test vectors.

You can review the draft here: https://github.com/siv2r/bip-frost-signing

Please note that key generation for FROST is not covered in this draft
and should be addressed using the methods described in:
- ChillDKG BIP: https://github.com/BlockstreamResearch/bip-frost-dkg
- RFC 9792 (Appendix C): https://datatracker.ietf.org/doc/rfc9591/

I look forward to your feedback.

Best,
Sivaram