MPC Wallet: Is Crypto Finally Moving Beyond Seed Phrases?

An MPC wallet is a cryptocurrency wallet that implements multi-party computation to replace the single full private key, which is usually stored in a single location. In practice, in an MPC wallet, multiple separate key shares are created in order to create a valid signature for the blockchain, as opposed to reassembling the private key.

What Is an MPC Wallet?

This architecture may offer consumer and institutional custody. The actual number of shares, where they are stored, and how many are needed to sign will depend on the threshold scheme selected by the wallet provider.

What Does MPC Mean in Crypto?

MPC stands for Multi-Party Computation, a subfield of cryptography in which multiple parties jointly compute the output of a function while keeping their inputs private. An application of MPC to crypto custody is threshold signing, where a number of parties collaboratively sign a transaction without allowing any single party to know the private key in its entirety.

This is the basic idea of how MPC crypto security works: instead of using a single secret key that authorizes all transactions, the control of the signing power is distributed among multiple participants, who must comply with the protocol.