Glossary
MPC Wallet
A wallet whose private key is split into shares held by separate parties using multi-party computation, so no single device ever stores the whole key and a threshold can sign together.
An MPC (multi-party computation) wallet never assembles a complete private key in one place. The key is split into shares distributed across devices or servers, and signing runs a threshold protocol (TSS) in which a quorum cooperates to produce one ordinary signature — the full key is never reconstructed.
Because there is no single seed phrase to steal, MPC wallets remove the classic single point of failure. Shares can be rotated or revoked without moving funds, and providers like Fireblocks, Coinbase, and Web3Auth use them for institutional custody and consumer self-custody alike. Unlike multisig, the result is a single on-chain signature with no extra gas or contract code.