Technical Definition

Threshold Signature Scheme (TSS)

A Threshold Signature Scheme lets a defined threshold of participants cooperate to create one valid digital signature.

By Crypto University Editorial
MPC WalletMultisig WalletSigner

✦ Key Insight

It is widely used in MPC custody and wallet systems to reduce single-point key compromise.

✕ Common Misconceptions

TSS security depends on the exact protocol, implementation, participant independence, and recovery process.

Detailed Explanation

The complete signing key can be distributed as shares rather than stored in one place.

In Practice

“A 2-of-3 TSS setup signs a transaction when any two authorized devices cooperate.”

Dig Deeper

Private Key

The secret number that authorises spending from a crypto address.

Multisig Wallet

A wallet that requires several independent keys to approve a transaction before it executes.

Signature

A cryptographic signature proves that the holder of a private key authorized specific data without revealing the private key itself.

MPC Wallet

An MPC wallet uses multi-party computation so signing authority is divided among multiple parties or devices without reconstructing one full private key in a single place.