{
 "meta": {
  "dataset": "Subscriber history — @progbook",
  "channel": "https://tgregister.com/channel/progbook",
  "retrieved_at": "2026-08-22T02:48:09.831Z",
  "licence": "CC BY 4.0 — attribute to tgregister.com",
  "n_readings": 16,
  "window": {
   "from": "2026-08-06T03:58:14.589Z",
   "to": "2026-08-21T20:18:06.584Z"
  },
  "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": "2026-08-06T03:58:14.589Z",
   "subscribers": 140340,
   "source": 0
  },
  {
   "ts": "2026-08-06T04:00:17.402Z",
   "subscribers": 140340,
   "source": 3
  },
  {
   "ts": "2026-08-07T02:11:18.205Z",
   "subscribers": 140329,
   "source": 4
  },
  {
   "ts": "2026-08-08T04:01:16.859Z",
   "subscribers": 140306,
   "source": 4
  },
  {
   "ts": "2026-08-09T06:01:04.358Z",
   "subscribers": 140271,
   "source": 4
  },
  {
   "ts": "2026-08-10T09:20:48.776Z",
   "subscribers": 140250,
   "source": 4
  },
  {
   "ts": "2026-08-11T10:14:54.845Z",
   "subscribers": 140232,
   "source": 4
  },
  {
   "ts": "2026-08-12T07:12:03.743Z",
   "subscribers": 140219,
   "source": 4
  },
  {
   "ts": "2026-08-13T07:54:12.741Z",
   "subscribers": 140186,
   "source": 4
  },
  {
   "ts": "2026-08-14T16:17:05.956Z",
   "subscribers": 140157,
   "source": 4
  },
  {
   "ts": "2026-08-16T05:19:00.103Z",
   "subscribers": 140147,
   "source": 4
  },
  {
   "ts": "2026-08-17T13:13:37.301Z",
   "subscribers": 140132,
   "source": 4
  },
  {
   "ts": "2026-08-18T16:04:58.106Z",
   "subscribers": 140101,
   "source": 4
  },
  {
   "ts": "2026-08-19T13:54:54.116Z",
   "subscribers": 140090,
   "source": 4
  },
  {
   "ts": "2026-08-20T16:37:44.015Z",
   "subscribers": 140035,
   "source": 4
  },
  {
   "ts": "2026-08-21T20:18:06.584Z",
   "subscribers": 140018,
   "source": 4
  }
 ]
}