{
 "meta": {
  "dataset": "Subscriber history — @course_archive",
  "channel": "https://tgregister.com/channel/course_archive",
  "retrieved_at": "2026-09-16T11:12:02.282Z",
  "licence": "CC BY 4.0 — attribute to tgregister.com",
  "n_readings": 29,
  "window": {
   "from": "2026-08-07T01:16:49.283Z",
   "to": "2026-09-14T21:21:52.149Z"
  },
  "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": "2026-08-07T01:16:49.283Z",
   "subscribers": 31049,
   "source": 3
  },
  {
   "ts": "2026-08-07T15:58:19.714Z",
   "subscribers": 31052,
   "source": 4
  },
  {
   "ts": "2026-08-08T15:08:21.699Z",
   "subscribers": 31054,
   "source": 4
  },
  {
   "ts": "2026-08-09T12:36:00.669Z",
   "subscribers": 31044,
   "source": 4
  },
  {
   "ts": "2026-08-10T14:25:08.391Z",
   "subscribers": 31037,
   "source": 4
  },
  {
   "ts": "2026-08-11T11:08:58.360Z",
   "subscribers": 31039,
   "source": 4
  },
  {
   "ts": "2026-08-12T09:55:25.174Z",
   "subscribers": 31035,
   "source": 4
  },
  {
   "ts": "2026-08-13T09:03:58.434Z",
   "subscribers": 31030,
   "source": 4
  },
  {
   "ts": "2026-08-14T16:28:56.542Z",
   "subscribers": 31033,
   "source": 4
  },
  {
   "ts": "2026-08-16T06:38:44.137Z",
   "subscribers": 31026,
   "source": 4
  },
  {
   "ts": "2026-08-18T14:24:57.535Z",
   "subscribers": 31029,
   "source": 4
  },
  {
   "ts": "2026-08-19T11:34:14.608Z",
   "subscribers": 31005,
   "source": 4
  },
  {
   "ts": "2026-08-20T10:07:37.414Z",
   "subscribers": 30998,
   "source": 4
  },
  {
   "ts": "2026-08-21T09:27:50.208Z",
   "subscribers": 30989,
   "source": 4
  },
  {
   "ts": "2026-08-22T17:44:19.499Z",
   "subscribers": 30981,
   "source": 4
  },
  {
   "ts": "2026-08-25T10:43:20.145Z",
   "subscribers": 30973,
   "source": 4
  },
  {
   "ts": "2026-08-26T11:52:26.526Z",
   "subscribers": 30974,
   "source": 4
  },
  {
   "ts": "2026-08-27T11:43:52.036Z",
   "subscribers": 30976,
   "source": 4
  },
  {
   "ts": "2026-08-28T15:02:25.298Z",
   "subscribers": 30983,
   "source": 4
  },
  {
   "ts": "2026-08-29T16:36:15.788Z",
   "subscribers": 30975,
   "source": 4
  },
  {
   "ts": "2026-08-31T14:24:38.209Z",
   "subscribers": 30974,
   "source": 4
  },
  {
   "ts": "2026-09-01T11:05:56.466Z",
   "subscribers": 30972,
   "source": 4
  },
  {
   "ts": "2026-09-02T08:28:53.595Z",
   "subscribers": 30966,
   "source": 4
  },
  {
   "ts": "2026-09-03T16:39:35.668Z",
   "subscribers": 30967,
   "source": 4
  },
  {
   "ts": "2026-09-05T14:41:16.598Z",
   "subscribers": 30962,
   "source": 4
  },
  {
   "ts": "2026-09-08T17:56:38.704Z",
   "subscribers": 30946,
   "source": 4
  },
  {
   "ts": "2026-09-11T13:19:36.995Z",
   "subscribers": 30949,
   "source": 4
  },
  {
   "ts": "2026-09-13T07:20:54.319Z",
   "subscribers": 30952,
   "source": 4
  },
  {
   "ts": "2026-09-14T21:21:52.149Z",
   "subscribers": 30945,
   "source": 4
  }
 ]
}