what is multisig?

a wallet that needs more than one key to move funds, for example any 2 of 3.

with a setup like 2 of 3, one lost or stolen key is not fatal. the wallet configuration (which keys, how many are needed) must be backed up as well, or the keys alone may not find the coins.

related words

air-gapped signer a signing device that never connects directly to a computer or network.
wallet configuration (descriptor) a file or text that describes how a multisig or advanced wallet is built.
hardware wallet a small dedicated device that keeps the keys inside and signs transactions there.

part of the topic after death: free articles, more words and the guide.

checked 2026-10-20. education, not advice. found a mistake? see corrections.