Vaults

Vaults, in bitcoin, are spending arrangements that add a time delay and a recovery path to withdrawals, so that even a thief who obtains keys cannot move coins instantly or irreversibly. Proposals such as BIP 345's OP_VAULT, published in 2023, would enforce these rules at the consensus level through covenants.

Why it matters

Bitcoin custody today is unforgiving: a single signing event can be final, and key theft usually means total loss. A vault changes the game by inserting a mandatory waiting period between initiating a withdrawal and completing it. The owner watches the chain, and if an unauthorized unvaulting appears, sweeps everything to a pre-committed recovery key before the delay expires. Theft stops being a single quiet event and becomes a race the owner is positioned to win.

Approximations exist now using pre-signed transactions and multisig, but native covenant support would make vaults simpler, safer, and standard for high-value cold storage.

In the gold vs bitcoin debate

The name is borrowed from gold, and the comparison is instructive. A gold vault protects metal with walls, guards, and recurring storage fees, and its security requires trusting the custodian who controls the door. A bitcoin vault aims to deliver institutional-grade protection through script rules alone, keeping the asset in the owner's hands, which is the difference between securing a thing and securing a rule.