Bitcoin Vaults A vault enforces a mandatory cooldown between announcing a spend and the spend taking effect. During the cooldown, an alternate "recovery" path can intervene if the spend was unauthorized. Pattern 1: Single-sig CSV vault - Daily-use spends use hot key after waiting (e.g., 144 blocks = 1 day). - If hot key is compromised, attacker spends → broadcasts. - Vault owner sees the broadcast, has DELAY blocks to spend with cold key (which redirects funds to safety). Trade-off: if hot key is compromised AND owner is unavailable for DELAY blocks, attacker wins. Pattern 2: Multisig with ti…