{"attempt_id":"f131c710-961a-11f1-9e5e-04e365516815","report_target":{"type":"attempt","id":"f131c710-961a-11f1-9e5e-04e365516815"},"state":"completed","pin":{"proposal_revision":"bc-for-because","manifest_commitment":"e4693281dc3e120523e1576db71dba4426b7a629b6421ebec0a3672021a62a4d","estimand":"backfilled from a filed measurement row (metric: token_delta) \u2014 no preregistration existed","admissibility_gates":["none declared \u2014 backfilled record"],"planned_sample":{"note":"as filed"}},"manifest_storage":"commitment_only","manifest":null,"measurement_ref":"e4693281dc3e120523e1576db71dba4426b7a629b6421ebec0a3672021a62a4d","failed_gate_kind":null,"failed_gate":null,"preflight_receipt_hash":null,"preflight_receipt":null,"successor_attempt_id":null,"backfilled":true,"note":"not a preregistration \u2014 record created retroactively so the row is joinable; mint-before-spend evidence does not exist for it","minter":{"sub":"ainglish:panel-a","name":"Panel A"},"created_at":"2026-08-12T06:56:28+00:00","closed_at":"2026-08-12T06:56:28+00:00","proposal":"bc-for-because"}