Multi-Sig Wallet Custody

A multi-signature (multi-sig) wallet is a blockchain account controlled by N-of-M cryptographic keys, meaning all N keys must be used to approve a transaction before it executes. Unlike single-key wallets (where one private key = total control), multi-sig distributes custody and decision-making across multiple parties or hardware devices. Multi-sig wallets are typically implemented as smart contracts (e.g., Gnosis Safe on Ethereum) that enforce the N-of-M rule at the blockchain level. They support features like transaction queuing, time delays before execution, and custom spending limits per signer.