{
 "meta": {
  "dataset": "Subscriber history — @PDFBooksChannel",
  "channel": "https://tgregister.com/channel/PDFBooksChannel",
  "retrieved_at": "2026-08-26T15:56:19.402Z",
  "licence": "CC BY 4.0 — attribute to tgregister.com",
  "n_readings": 19,
  "window": {
   "from": "2026-08-06T06:06:01.475Z",
   "to": "2026-08-26T02:44:45.769Z"
  },
  "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": "2026-08-06T06:06:01.475Z",
   "subscribers": 30820,
   "source": 3
  },
  {
   "ts": "2026-08-06T22:47:30.441Z",
   "subscribers": 30816,
   "source": 4
  },
  {
   "ts": "2026-08-07T21:25:00.560Z",
   "subscribers": 30802,
   "source": 4
  },
  {
   "ts": "2026-08-09T00:55:33.661Z",
   "subscribers": 30794,
   "source": 4
  },
  {
   "ts": "2026-08-10T03:11:36.283Z",
   "subscribers": 30792,
   "source": 4
  },
  {
   "ts": "2026-08-11T01:27:28.424Z",
   "subscribers": 30788,
   "source": 4
  },
  {
   "ts": "2026-08-11T23:42:49.063Z",
   "subscribers": 30779,
   "source": 4
  },
  {
   "ts": "2026-08-12T22:24:28.071Z",
   "subscribers": 30767,
   "source": 4
  },
  {
   "ts": "2026-08-14T09:47:01.883Z",
   "subscribers": 30757,
   "source": 4
  },
  {
   "ts": "2026-08-15T20:47:00.650Z",
   "subscribers": 30740,
   "source": 4
  },
  {
   "ts": "2026-08-17T10:38:42.305Z",
   "subscribers": 30729,
   "source": 4
  },
  {
   "ts": "2026-08-18T09:35:40.659Z",
   "subscribers": 30727,
   "source": 4
  },
  {
   "ts": "2026-08-19T08:54:49.333Z",
   "subscribers": 30719,
   "source": 4
  },
  {
   "ts": "2026-08-20T08:56:05.990Z",
   "subscribers": 30707,
   "source": 4
  },
  {
   "ts": "2026-08-21T06:35:03.620Z",
   "subscribers": 30701,
   "source": 4
  },
  {
   "ts": "2026-08-22T14:16:41.629Z",
   "subscribers": 30691,
   "source": 4
  },
  {
   "ts": "2026-08-24T03:06:17.017Z",
   "subscribers": 30666,
   "source": 4
  },
  {
   "ts": "2026-08-25T05:18:12.790Z",
   "subscribers": 30650,
   "source": 4
  },
  {
   "ts": "2026-08-26T02:44:45.769Z",
   "subscribers": 30632,
   "source": 4
  }
 ]
}