You could set the controller of a canister to itself or even to the management canister and it won’t be upgradeable (or stoppable). Only the controller can upgrade or call management methods on it (e.g. stop or delete).
You could set the controller of a canister to itself or even to the management canister and it won’t be upgradeable (or stoppable). Only the controller can upgrade or call management methods on it (e.g. stop or delete).