FROST

Flexible Round-Optimized Schnorr Threshold signatures — a protocol that allows a group of N parties to collaboratively produce a single Schnorr signature, with any threshold T of them present. Unlike ECDSA-based threshold schemes, FROST signatures are indistinguishable from single-signer Schnorr signatures on-chain, providing privacy and fee savings. FROST is a candidate for future SSP key schemes on Taproot-enabled chains.