{
 "meta": {
  "dataset": "Subscriber history — @IAS_Study_Materials_Notes_Free",
  "channel": "https://tgregister.com/channel/IAS_Study_Materials_Notes_Free",
  "retrieved_at": "2026-09-12T05:36:23.702Z",
  "licence": "CC BY 4.0 — attribute to tgregister.com",
  "n_readings": 30,
  "window": {
   "from": "2026-08-07T21:22:58.868Z",
   "to": "2026-09-10T21:21:54.551Z"
  },
  "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": "2026-08-07T21:22:58.868Z",
   "subscribers": 17447,
   "source": 0
  },
  {
   "ts": "2026-08-08T05:34:20.315Z",
   "subscribers": 17437,
   "source": 4
  },
  {
   "ts": "2026-08-09T02:21:07.076Z",
   "subscribers": 17432,
   "source": 4
  },
  {
   "ts": "2026-08-10T03:31:46.299Z",
   "subscribers": 17413,
   "source": 4
  },
  {
   "ts": "2026-08-11T05:56:18.128Z",
   "subscribers": 17402,
   "source": 4
  },
  {
   "ts": "2026-08-12T06:46:33.054Z",
   "subscribers": 17387,
   "source": 4
  },
  {
   "ts": "2026-08-13T05:45:25.671Z",
   "subscribers": 17384,
   "source": 4
  },
  {
   "ts": "2026-08-14T15:17:01.481Z",
   "subscribers": 17373,
   "source": 4
  },
  {
   "ts": "2026-08-16T05:14:30.520Z",
   "subscribers": 17359,
   "source": 4
  },
  {
   "ts": "2026-08-17T14:24:33.093Z",
   "subscribers": 17352,
   "source": 4
  },
  {
   "ts": "2026-08-17T19:24:45.769Z",
   "subscribers": 17352,
   "source": 1
  },
  {
   "ts": "2026-08-18T11:03:13.937Z",
   "subscribers": 17350,
   "source": 4
  },
  {
   "ts": "2026-08-19T09:55:06.534Z",
   "subscribers": 17338,
   "source": 4
  },
  {
   "ts": "2026-08-20T06:47:26.244Z",
   "subscribers": 17336,
   "source": 4
  },
  {
   "ts": "2026-08-21T03:55:13.918Z",
   "subscribers": 17323,
   "source": 4
  },
  {
   "ts": "2026-08-22T12:15:50.773Z",
   "subscribers": 17312,
   "source": 4
  },
  {
   "ts": "2026-08-24T06:53:43.384Z",
   "subscribers": 17296,
   "source": 4
  },
  {
   "ts": "2026-08-25T06:03:00.342Z",
   "subscribers": 17284,
   "source": 4
  },
  {
   "ts": "2026-08-26T04:17:13.114Z",
   "subscribers": 17280,
   "source": 4
  },
  {
   "ts": "2026-08-27T05:57:28.955Z",
   "subscribers": 17274,
   "source": 4
  },
  {
   "ts": "2026-08-28T06:15:37.102Z",
   "subscribers": 17266,
   "source": 4
  },
  {
   "ts": "2026-08-29T03:37:13.810Z",
   "subscribers": 17264,
   "source": 4
  },
  {
   "ts": "2026-08-30T02:44:54.654Z",
   "subscribers": 17261,
   "source": 4
  },
  {
   "ts": "2026-08-31T00:26:23.876Z",
   "subscribers": 17250,
   "source": 4
  },
  {
   "ts": "2026-08-31T23:57:57.803Z",
   "subscribers": 17237,
   "source": 4
  },
  {
   "ts": "2026-09-01T21:05:59.034Z",
   "subscribers": 17231,
   "source": 4
  },
  {
   "ts": "2026-09-03T00:46:38.601Z",
   "subscribers": 17222,
   "source": 4
  },
  {
   "ts": "2026-09-04T19:17:44.221Z",
   "subscribers": 17214,
   "source": 4
  },
  {
   "ts": "2026-09-07T23:18:01.435Z",
   "subscribers": 17186,
   "source": 4
  },
  {
   "ts": "2026-09-10T21:21:54.551Z",
   "subscribers": 17147,
   "source": 4
  }
 ]
}