Pieter Wuille and Tim Ruffing treat us to a conversation about Schnorr, multi-signatures, MuSig, and more. We covered a lot so this is part one of a two part conversation. We discussed: - When to roll your own cryptography (01:31) - Schnorr Signatures (09:01)   - Why is Schnorr preferable to ECDSA? (10:55) - Schnorr efficiency improvements (15:52) - Multisigs (23:16) - MuSig (25:07)   - Yannick Seurin   - Rogue key attack or key cancellation attack (31:00)   - Bellare-Neven (32:12) - Interactive versus non-interactive protocols (35:30) - FROST (42:42)