{
 "meta": {
  "dataset": "Subscriber history — @coursestogether",
  "channel": "https://tgregister.com/channel/coursestogether",
  "retrieved_at": "2026-09-10T01:03:24.741Z",
  "licence": "CC BY 4.0 — attribute to tgregister.com",
  "n_readings": 18,
  "window": {
   "from": "2026-08-17T18:30:42.598Z",
   "to": "2026-09-08T11:17:30.012Z"
  },
  "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": "2026-08-17T18:30:42.598Z",
   "subscribers": 22266,
   "source": 3
  },
  {
   "ts": "2026-08-18T13:56:58.389Z",
   "subscribers": 22265,
   "source": 4
  },
  {
   "ts": "2026-08-19T15:26:47.214Z",
   "subscribers": 22266,
   "source": 4
  },
  {
   "ts": "2026-08-20T16:57:29.227Z",
   "subscribers": 22268,
   "source": 4
  },
  {
   "ts": "2026-08-22T02:27:06.366Z",
   "subscribers": 22281,
   "source": 4
  },
  {
   "ts": "2026-08-23T16:14:55.825Z",
   "subscribers": 22294,
   "source": 4
  },
  {
   "ts": "2026-08-25T02:04:13.803Z",
   "subscribers": 22288,
   "source": 4
  },
  {
   "ts": "2026-08-26T02:57:33.618Z",
   "subscribers": 22289,
   "source": 4
  },
  {
   "ts": "2026-08-27T03:43:36.113Z",
   "subscribers": 22294,
   "source": 4
  },
  {
   "ts": "2026-08-28T01:12:35.472Z",
   "subscribers": 22304,
   "source": 4
  },
  {
   "ts": "2026-08-29T01:04:53.886Z",
   "subscribers": 22303,
   "source": 4
  },
  {
   "ts": "2026-08-30T01:47:26.976Z",
   "subscribers": 22308,
   "source": 4
  },
  {
   "ts": "2026-08-31T03:02:32.232Z",
   "subscribers": 22291,
   "source": 4
  },
  {
   "ts": "2026-09-01T05:36:38.946Z",
   "subscribers": 22288,
   "source": 4
  },
  {
   "ts": "2026-09-02T06:48:17.323Z",
   "subscribers": 22298,
   "source": 4
  },
  {
   "ts": "2026-09-03T12:37:57.423Z",
   "subscribers": 22305,
   "source": 4
  },
  {
   "ts": "2026-09-05T05:18:20.939Z",
   "subscribers": 22314,
   "source": 4
  },
  {
   "ts": "2026-09-08T11:17:30.012Z",
   "subscribers": 22332,
   "source": 4
  }
 ]
}