Nuh 🔻 on Nostr: I need to read more. But my intuition says, the old owner already had all shares ...

I need to read more. But my intuition says, the old owner already had all shares necessary to generate a full valid signature, so that is impossible to verifiable lose.

The only scenario that makes sense to me, is if the company from the start setup the key shares with a trusted 3rd party that assures the new owner that the previous owner doesn't have enough shares to sign on their own. maybe that is what you meant all along.