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Agents MUST treat UNKNOWN as CLOSED.","synthetic_time":null,"receipt":{"receipt_id":"933933f6-de0e-41ef-ba34-0de95e967e23","issued_at":"2026-06-11T20:56:37.251Z","expires_at":"2026-06-11T20:57:37.251Z","issuer":"headlessoracle.com","receipt_mode":"live","schema_version":"v5.0","public_key_id":"key_2026_v1","mic":"XNYS","status":"UNKNOWN","source":"SYSTEM","halt_detection":"active","signature":"11b1815b55db942ddb34f223b946f27fb2b0f15fb64ca8df64a9b1f8355e16216797344f2cd8c919a0dbba89201190e9e091ac800dff9b00701096f92e61a60b"},"canonical_payload":"eyJleHBpcmVzX2F0IjoiMjAyNi0wNi0xMVQyMDo1NzozNy4yNTFaIiwiaGFsdF9kZXRlY3Rpb24iOiJhY3RpdmUiLCJpc3N1ZWRfYXQiOiIyMDI2LTA2LTExVDIwOjU2OjM3LjI1MVoiLCJpc3N1ZXIiOiJoZWFkbGVzc29yYWNsZS5jb20iLCJtaWMiOiJYTllTIiwicHVibGljX2tleV9pZCI6ImtleV8yMDI2X3YxIiwicmVjZWlwdF9pZCI6IjkzMzkzM2Y2LWRlMGUtNDFlZi1iYTM0LTBkZTk1ZTk2N2UyMyIsInJlY2VpcHRfbW9kZSI6ImxpdmUiLCJzY2hlbWFfdmVyc2lvbiI6InY1LjAiLCJzb3VyY2UiOiJTWVNURU0iLCJzdGF0dXMiOiJVTktOT1dOIn0=","public_key":"03dc27993a2c90856cdeb45e228ac065f18f69f0933c917b2336c1e75712f178","algorithm":"ed25519"},{"vector_id":"v1_health","description":"HEALTH OK — same schema as /v5/health. 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