Implementing Compact Threshold MuSig Signatures

We are excited to have Andrew Poelstra, Director of Research at Blockstream speak about MuSig!

"Andrew will describe their efforts to implement threshold MuSig signatures in which all participants shard their secret keys using Verifiable Secret Sharing, and accumulate the shards they receive to construct new secret keys. He will also discuss the notion of accountability for threshold signatures, which allows third-party verifiers to determine which subset of signers produced a given signature, but which typically comes at a significant verification/storage cost. In the talk, Andrew will consider a "semi-accountable" signature scheme wherein a non-accountable signature commits to an accountable signature using sign-to-contract."