What Is a Multisig Wallet?
A multisig wallet (short for multi-signature wallet) requires multiple private key approvals before a transaction can be executed. Instead of a single key holder having full control, a multisig sets a threshold: for example, 2 of 3 signers must approve before any funds move. This makes multisig wallets significantly harder to compromise and a standard tool for managing shared treasury funds.
How Multisig Works
A multisig wallet defines two numbers: the total number of authorized signers and the minimum number of signatures required to execute a transaction (the M-of-N threshold). A 2-of-3 multisig has three key holders, any two of whom must sign. When someone proposes a transaction, the wallet waits until enough signers approve. Only then does the transaction broadcast to the blockchain. This means a single compromised or lost key cannot drain the wallet.
Common Use Cases
Project treasuries are the most common multisig use case in crypto. DAOs and protocol teams use multisig wallets (often via tools like Gnosis Safe on EVM chains or Squads on Solana) to require agreement from multiple core team members before spending funds. Individuals also use multisig setups to protect high-value holdings: even if one device is compromised, the attacker cannot move funds without the other keys.
Multisig on Solana
On Solana, Squads is the leading multisig and program authority management tool. It allows teams to set up on-chain multisig vaults, manage program upgrade authorities behind a multisig threshold, and coordinate transaction proposals and approvals directly in the browser without sharing private keys. Using a multisig for a Solana program's upgrade authority is considered best practice for any production protocol.
FAQ
A multisig wallet requires multiple private key holders to approve a transaction before it executes. The M-of-N threshold (for example, 2-of-3) means no single person can move funds alone.
Multisig wallets protect against single points of failure: a lost key, a compromised device, or a malicious insider cannot drain funds alone. They are the standard for managing shared treasuries and protocol upgrade authority.
Squads is the most widely used multisig tool on Solana. Teams use it to create on-chain multisig vaults, manage program authorities, and coordinate spending approvals without sharing private keys.
A 2-of-3 multisig has three authorized signers, and any two of them must sign for a transaction to execute. One lost or stolen key is not enough for an attacker to access the funds.
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