{
 "meta": {
  "dataset": "Subscriber history — @Class_9_Maths_Notes_Book",
  "channel": "https://tgregister.com/channel/Class_9_Maths_Notes_Book",
  "retrieved_at": "2026-09-10T03:17:31.734Z",
  "licence": "CC BY 4.0 — attribute to tgregister.com",
  "n_readings": 24,
  "window": {
   "from": "2026-08-07T12:31:51.549Z",
   "to": "2026-09-08T21:59:41.111Z"
  },
  "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": "2026-08-07T12:31:51.549Z",
   "subscribers": 9886,
   "source": 0
  },
  {
   "ts": "2026-08-10T07:37:18.662Z",
   "subscribers": 9884,
   "source": 4
  },
  {
   "ts": "2026-08-13T00:53:16.982Z",
   "subscribers": 10305,
   "source": 4
  },
  {
   "ts": "2026-08-14T08:08:18.920Z",
   "subscribers": 10487,
   "source": 4
  },
  {
   "ts": "2026-08-15T19:04:43.212Z",
   "subscribers": 10657,
   "source": 4
  },
  {
   "ts": "2026-08-17T09:43:54.295Z",
   "subscribers": 10768,
   "source": 4
  },
  {
   "ts": "2026-08-18T13:14:06.809Z",
   "subscribers": 10870,
   "source": 4
  },
  {
   "ts": "2026-08-19T15:52:55.768Z",
   "subscribers": 11021,
   "source": 4
  },
  {
   "ts": "2026-08-20T19:02:06.230Z",
   "subscribers": 11123,
   "source": 4
  },
  {
   "ts": "2026-08-21T20:29:06.437Z",
   "subscribers": 11123,
   "source": 1
  },
  {
   "ts": "2026-08-22T02:25:12.189Z",
   "subscribers": 11200,
   "source": 4
  },
  {
   "ts": "2026-08-23T14:07:29.780Z",
   "subscribers": 11309,
   "source": 4
  },
  {
   "ts": "2026-08-25T01:46:28.739Z",
   "subscribers": 11436,
   "source": 4
  },
  {
   "ts": "2026-08-26T05:09:11.479Z",
   "subscribers": 11444,
   "source": 4
  },
  {
   "ts": "2026-08-27T06:23:47.564Z",
   "subscribers": 11487,
   "source": 4
  },
  {
   "ts": "2026-08-28T04:12:55.153Z",
   "subscribers": 11498,
   "source": 4
  },
  {
   "ts": "2026-08-29T04:58:19.978Z",
   "subscribers": 11529,
   "source": 4
  },
  {
   "ts": "2026-08-30T02:18:31.404Z",
   "subscribers": 11572,
   "source": 4
  },
  {
   "ts": "2026-08-31T04:26:52.070Z",
   "subscribers": 11621,
   "source": 4
  },
  {
   "ts": "2026-09-01T07:36:23.105Z",
   "subscribers": 11686,
   "source": 4
  },
  {
   "ts": "2026-09-02T06:08:58.405Z",
   "subscribers": 11732,
   "source": 4
  },
  {
   "ts": "2026-09-03T16:16:31.517Z",
   "subscribers": 11787,
   "source": 4
  },
  {
   "ts": "2026-09-05T17:01:30.809Z",
   "subscribers": 11782,
   "source": 4
  },
  {
   "ts": "2026-09-08T21:59:41.111Z",
   "subscribers": 11759,
   "source": 4
  }
 ]
}