Threshold Signatures & Real-World Use Cases

Classical secret sharing reconstructs the secret at a single point — a risk. Threshold signatures distribute signing: k-of-n parties jointly produce a signature without any single party ever holding the full private key. No reconstruction, no single point of failure.

Threshold ECDSA (t-ECDSA) allows k parties to jointly compute an ECDSA signature on a message. Each party holds a share of the private key. The protocol uses MPC to compute the signature without revealing individual shares or the combined key.