Research: The Many Faces of Schnorr
"Our main new result is to show how to securely combine the techniques used in FROST and SPRINT, allowing one to build a threshold Schnorr signing protocol that:
1) is secure and robust without synchrony assumptions (like SPRINT);
2) provides security even with an unlimited number of presignatures, and (assuming unused presignatures are available) signing requests can be processed concurrently with minimal latency (like FROST);
3) achieves high throughput (like SPRINT), and;
4) achieves optimal resilience."