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Multi-signature wallets

A multi-signature wallet is like...

• a joint savings account that requires more than one account holder to sign checks.

• a bank vault that requires each bank manager's password to open.

• a planning committee where every expense needs to be signed off on by each member of the committee.

• in a video game lobby where each player needs to approve of each action like readying up to start the game, kicking a teammate, etc. No one player alone can perform these actions.