What is a Multi-Signature Wallet?

A multi-signature (multi-sig) wallet is a type of digital wallet that requires more than one signature or authorization to execute a transaction. This means that multiple parties must sign off on a transaction before it can be processed and the funds can be transferred. The concept of multi-sig wallets is similar to the concept of joint bank accounts, where multiple parties must sign a check before it can be cashed.

In the context of cryptocurrency, a multi-sig wallet is a digital wallet that allows multiple people to hold and manage their digital assets together. Each person in the multi-sig wallet has their own private key and must sign off on any transactions before they can be executed. This provides an extra layer of security as funds cannot be transferred without the agreement of multiple parties.

Multi-sig wallets can be used in a variety of scenarios, such as corporate accounts, shared wallets, and escrow services. For example, a corporate account may require two signatures from two different executives before a large sum of money can be spent. A shared wallet may require two signatures from two different people before any funds can be withdrawn. An escrow service may require signatures from both a buyer and a seller before a transaction can be completed.

Multi-sig wallets can be implemented in different ways, with different numbers of signatures required, depending on the use case and the level of security required. For example, a two-of-two multi-sig wallet requires two signatures, while a two-of-three multi-sig wallet requires at least two out of three signatures.

Simplified Example

Imagine you have a toy chest with all your favorite toys inside. You want to keep your toys safe, so you decide to put a lock on the chest. But, you don't want just one person to be able to open the chest and play with the toys.

So, you come up with a new plan. You and your friends each get a key to the chest. Now, it takes two keys to open the chest and play with the toys. That way, you can all agree on when to play with the toys and make sure that they are safe when they are not being played with.

This is like a multi-signature wallet. It is a way to keep your important things, like money or information, safe. Just like it takes two keys to open the toy chest, it takes multiple signatures to make a transaction with a multi-signature wallet. This helps make sure that everyone agrees before anything happens, just like you and your friends agree before opening the toy chest.

Multi-signature wallets help to keep important things safe and make sure that everyone agrees before anything happens.

History of the Term "Multi-Signature Wallets"

Transport back to the early days of crypto, when Bitcoin was just a glimmer in Satoshi Nakamoto's eye. Securing coins then relied on a single vulnerable private key. The community, comprising miners, traders, and visionaries, recognized the flaws and brainstormed online. The idea emerged: a multi-signature wallet, a digital safe with multiple keys held by different guardians, a fortress against vulnerabilities. Developing it wasn't easy—developers battled security issues, designers balanced user-friendliness and protection. The community collaborated, offering feedback and testing prototypes, leading to the creation of the first multi-signature wallets. Clunky initially, with limited features, they embodied the collective dream of digital security. The term "multi-signature wallet" itself evolved gradually, with early developers experimenting with phrases like "joint accounts" until, in online forums, someone coined the perfect term, fitting seamlessly and evoking shared responsibility.


MetaMask: MetaMask is a popular browser extension and mobile wallet that provides a multi-signature wallet solution for Ethereum-based assets. With MetaMask, users can securely store and manage their digital assets and execute transactions with multiple signatures.

Electrum: Electrum is a popular Bitcoin wallet that offers multi-signature capabilities. Electrum allows users to create multi-sig wallets with two or more signatures required for transactions, providing an extra layer of security for their digital assets.

BlockFi: BlockFi is a financial services company that offers multi-sig wallets for cryptocurrency storage and management. BlockFi's multi-sig wallets allow users to hold and manage their digital assets with multiple signatures required for transactions, providing an extra layer of security for their funds.

  • Multi-Coin Wallet: A cryptocurrency wallet that supports multiple types of cryptocurrencies, allowing users to store and manage multiple digital assets in one place.

  • Multi-Signature: A type of digital signature that requires more than one signature to be valid.