What Is a ‘Threshold Signature Scheme’ (TSS) and Its Relation to MPC?
A Threshold Signature Scheme (TSS) is a specific application of Multi-Party Computation (MPC) that allows a group of parties to collectively generate a single, valid signature on a message. The scheme requires a minimum number of participants (the threshold, e.g.
3 out of 5) to cooperate to produce the signature, without any single party having access to the full private key. It is the core cryptographic mechanism for MPC wallets.
