{
 "meta": {
  "dataset": "Subscriber history — @UWorld_USMLE",
  "channel": "https://tgregister.com/channel/UWorld_USMLE",
  "retrieved_at": "2026-09-10T13:59:39.681Z",
  "licence": "CC BY 4.0 — attribute to tgregister.com",
  "n_readings": 14,
  "window": {
   "from": "2026-08-06T03:06:52.913Z",
   "to": "2026-09-09T12:37:34.202Z"
  },
  "columns": {
   "ts": "when this reading was taken, UTC",
   "subscribers": "the count read (or, for source 3, carried over) — see source below",
   "source": {
    "0": "sweep.py — t.me/<name> profile page",
    "1": "promote.py — Bot API getChat",
    "2": "resolve.py — MTProto",
    "3": "spromote.py — t.me/s/<name> post preview (figure carried over from an earlier profile read, not the preview’s own rounded header)",
    "4": "remeasure.py — t.me/<name> profile page, re-read on a schedule"
   }
  },
  "note": "Snapshots are written only when a reading changes: a gap in ts means \"no change observed between readings\", never \"not measured\" and never \"interpolated\". Readings from different sources are separate lineages that do not confirm one another — subtracting across them can attribute a change to a period nothing was actually read in. Full method: https://tgregister.com/methodology#measuring"
 },
 "rows": [
  {
   "ts": "2026-08-06T03:06:52.913Z",
   "subscribers": 4159,
   "source": 0
  },
  {
   "ts": "2026-08-06T04:17:07.389Z",
   "subscribers": 4159,
   "source": 3
  },
  {
   "ts": "2026-08-07T13:17:56.585Z",
   "subscribers": 8875,
   "source": 0
  },
  {
   "ts": "2026-08-08T10:56:01.972Z",
   "subscribers": 4161,
   "source": 4
  },
  {
   "ts": "2026-08-11T03:25:27.573Z",
   "subscribers": 4170,
   "source": 4
  },
  {
   "ts": "2026-08-14T21:18:54.114Z",
   "subscribers": 4188,
   "source": 4
  },
  {
   "ts": "2026-08-18T02:03:43.786Z",
   "subscribers": 4199,
   "source": 4
  },
  {
   "ts": "2026-08-21T05:46:36.786Z",
   "subscribers": 4204,
   "source": 4
  },
  {
   "ts": "2026-08-24T11:39:21.984Z",
   "subscribers": 4201,
   "source": 4
  },
  {
   "ts": "2026-08-27T20:57:25.780Z",
   "subscribers": 4221,
   "source": 4
  },
  {
   "ts": "2026-08-31T06:43:02.610Z",
   "subscribers": 4231,
   "source": 4
  },
  {
   "ts": "2026-09-04T00:00:57.538Z",
   "subscribers": 4248,
   "source": 4
  },
  {
   "ts": "2026-09-04T13:16:12.522Z",
   "subscribers": 4248,
   "source": 1
  },
  {
   "ts": "2026-09-09T12:37:34.202Z",
   "subscribers": 4263,
   "source": 4
  }
 ]
}