{
 "meta": {
  "dataset": "Subscriber history — @course_free",
  "channel": "https://tgregister.com/channel/course_free",
  "retrieved_at": "2026-09-16T17:21:42.923Z",
  "licence": "CC BY 4.0 — attribute to tgregister.com",
  "n_readings": 32,
  "window": {
   "from": "2026-08-06T09:53:07.078Z",
   "to": "2026-09-15T04:39:37.154Z"
  },
  "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": "2026-08-06T09:53:07.078Z",
   "subscribers": 18349,
   "source": 3
  },
  {
   "ts": "2026-08-07T02:11:18.205Z",
   "subscribers": 18429,
   "source": 4
  },
  {
   "ts": "2026-08-08T00:55:31.572Z",
   "subscribers": 18426,
   "source": 4
  },
  {
   "ts": "2026-08-09T01:51:14.509Z",
   "subscribers": 18394,
   "source": 4
  },
  {
   "ts": "2026-08-09T23:36:10.715Z",
   "subscribers": 18364,
   "source": 4
  },
  {
   "ts": "2026-08-10T22:05:33.493Z",
   "subscribers": 18331,
   "source": 4
  },
  {
   "ts": "2026-08-11T23:58:00.248Z",
   "subscribers": 18300,
   "source": 4
  },
  {
   "ts": "2026-08-13T02:04:55.370Z",
   "subscribers": 18272,
   "source": 4
  },
  {
   "ts": "2026-08-14T13:14:38.163Z",
   "subscribers": 18221,
   "source": 4
  },
  {
   "ts": "2026-08-15T20:35:02.271Z",
   "subscribers": 18189,
   "source": 4
  },
  {
   "ts": "2026-08-17T10:25:24.157Z",
   "subscribers": 18149,
   "source": 4
  },
  {
   "ts": "2026-08-18T08:03:05.504Z",
   "subscribers": 18113,
   "source": 4
  },
  {
   "ts": "2026-08-19T08:05:04.778Z",
   "subscribers": 18086,
   "source": 4
  },
  {
   "ts": "2026-08-20T06:57:56.952Z",
   "subscribers": 18057,
   "source": 4
  },
  {
   "ts": "2026-08-21T09:13:15.695Z",
   "subscribers": 18043,
   "source": 4
  },
  {
   "ts": "2026-08-22T16:43:39.673Z",
   "subscribers": 18006,
   "source": 4
  },
  {
   "ts": "2026-08-24T06:15:50.044Z",
   "subscribers": 17979,
   "source": 4
  },
  {
   "ts": "2026-08-25T08:26:11.535Z",
   "subscribers": 17957,
   "source": 4
  },
  {
   "ts": "2026-08-26T08:37:38.375Z",
   "subscribers": 17937,
   "source": 4
  },
  {
   "ts": "2026-08-27T11:33:59.904Z",
   "subscribers": 17909,
   "source": 4
  },
  {
   "ts": "2026-08-28T10:13:03.536Z",
   "subscribers": 17895,
   "source": 4
  },
  {
   "ts": "2026-08-29T10:06:55.459Z",
   "subscribers": 17884,
   "source": 4
  },
  {
   "ts": "2026-08-30T11:17:38.537Z",
   "subscribers": 17863,
   "source": 4
  },
  {
   "ts": "2026-08-31T13:18:05.837Z",
   "subscribers": 17845,
   "source": 4
  },
  {
   "ts": "2026-09-01T14:03:50.953Z",
   "subscribers": 17816,
   "source": 4
  },
  {
   "ts": "2026-09-02T11:57:32.267Z",
   "subscribers": 17797,
   "source": 4
  },
  {
   "ts": "2026-09-03T16:39:35.668Z",
   "subscribers": 17779,
   "source": 4
  },
  {
   "ts": "2026-09-05T19:58:26.406Z",
   "subscribers": 17746,
   "source": 4
  },
  {
   "ts": "2026-09-09T05:58:14.846Z",
   "subscribers": 17701,
   "source": 4
  },
  {
   "ts": "2026-09-11T19:39:26.893Z",
   "subscribers": 17654,
   "source": 4
  },
  {
   "ts": "2026-09-13T16:01:48.413Z",
   "subscribers": 17623,
   "source": 4
  },
  {
   "ts": "2026-09-15T04:39:37.154Z",
   "subscribers": 17608,
   "source": 4
  }
 ]
}