Multisig (Multi-Signature Wallet)
Wallet or smart contract requiring multiple signatures from different private keys to authorize transactions.
Last Updated
2026-03-29
Related Concepts
What is Multisig?
Multisig (multi-signature) requires multiple cryptographic signatures to authorize a blockchain transaction. It distributes control across several keys so no single party can act alone.
How does Multisig work?
A set of authorized keys is defined with a signing threshold (e.g., 2-of-3).
Every transaction proposal must collect the required number of signatures before the contract executes it.
Why does Multisig matter?
It is the cornerstone of blockchain security for organizations. Millions in capital cannot depend on the safety of a single private key multisig removes that risk entirely.
Key features of Multisig
- M-of-N signature schemes
- Protects against loss or theft of one key
- Transparent group-managed transactions
- Supports complex governance workflows
Examples of Multisig
Bitcoin supports multisig natively with 2-of-3 addresses.
On Ethereum, Safe implements multisig via smart contract with advanced features like spending limits.
A family uses 2-of-4 multisig to manage a shared inheritance fund.