What does 2-of-3 multisig mean?

It means three keys exist for the wallet, but only two are required to authorize a transaction. This lets you lose access to one key and still recover your funds.

Do I need hardware wallets for multisig?

No. You can use hardware devices, software keys on phones or computers, or a combination of both. Mixing vendors across hardware wallets is recommended to reduce risk.

What happens if I lose an xpub?

Losing an xpub can prevent full wallet recovery, even if you have enough seed phrases. You need a quorum of keys plus the public keys of all signing devices to restore everything.

How do I practice using multisig safely?

Use a testnet faucet to get free testnet coins with no real value. This lets you familiarize yourself with the signing and recovery process before moving real funds.

Multisig Wallet Setup Guide: Steps, Tools, and Security Tips

Multisig wallets require more than one key to approve a transaction, removing a single point of failure. A common configuration is 2-of-3, where any two of three keys must sign.

You will need multiple signing devices, such as hardware wallets, phones, or computers, plus wallet software that handles multisig coordination like Sparrow, Electrum, or Nunchuk.

Back up every seed phrase and every cosigner's extended public key, or xpub. To restore a multisig wallet, you need a quorum of keys and the public keys of all signing devices.

Wallet software

Sparrow Desktop wallet that supports multisig coordination
Electrum Long-standing wallet with multisig capabilities
Nunchuk Wallet application designed for multisig setups

Multisig Wallet Setup Guide: Steps, Tools, and Security Tips — infographic

To set up a multisig wallet, use a reputable wallet application like Sparrow or Nunchuk and securely back up all required keys and wallet descriptors.

Understand Multisig Fundamentals

Multisig requires multiple keys to approve transactions, enhancing security by eliminating a single point of failure. "Multisig, short for multi-signature, means a wallet that needs more than one key to approve a transaction."

A common setup is "2 of 3", meaning any two out of three keys can authorize a transaction. "A common setup is two-of-three, where any two of three keys must sign."

Multisig adds complexity compared to single-signature wallets, so understand the trade-offs before implementing. "Complexity is the enemy of security."

Key Requirements for Setup

Acquire multiple devices (hardware wallets or software keys) to act as your signers. "You'll need three keys; could be three hardware devices, three keys on phones or computers, or some combination thereof (ie one phone and two hardware devices)."

Choose a wallet software that supports multisig, such as Sparrow, Electrum, or Nunchuk. "You'll need a wallet that easily lets you do the multisig coordination."

Back up all seed phrases and all cosigners' extended public keys (xpubs); losing an xpub can prevent wallet recovery. "To restore a multisig wallet, you need a quorum of keys AND the public keys of ALL the signing devices."

Best Practices for Security and Recovery

Store seed phrases and xpubs securely and separately, ideally in different physical locations. "Do not forget this, keep a copy of the entire wallet setup details with each seed if you are storing seeds in different locations."

Conduct test transactions on a testnet to familiarize yourself with the process before using real funds. "Messing around with Testnet will help you feel comfortable with multisig (google Testnet faucet to get free testnet coins. They have no value, and they're great for learning)."

Consider multi-vendor multisig to mitigate risks associated with a single hardware wallet manufacturer. "By creating a setup where no vendor has a quorum o..."

Are you interested in a specific multisig wallet software or hardware for your setup?