{
 "meta": {
  "dataset": "Subscriber history — @bookpdfb",
  "channel": "https://tgregister.com/channel/bookpdfb",
  "retrieved_at": "2026-08-20T22:21:27.542Z",
  "licence": "CC BY 4.0 — attribute to tgregister.com",
  "n_readings": 15,
  "window": {
   "from": "2026-08-07T19:25:42.690Z",
   "to": "2026-08-20T17:44:56.615Z"
  },
  "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": "2026-08-07T19:25:42.690Z",
   "subscribers": 10860,
   "source": 0
  },
  {
   "ts": "2026-08-07T19:31:27.522Z",
   "subscribers": 10860,
   "source": 3
  },
  {
   "ts": "2026-08-08T03:36:42.596Z",
   "subscribers": 10873,
   "source": 4
  },
  {
   "ts": "2026-08-09T05:04:13.423Z",
   "subscribers": 10885,
   "source": 4
  },
  {
   "ts": "2026-08-10T03:41:19.734Z",
   "subscribers": 10905,
   "source": 4
  },
  {
   "ts": "2026-08-11T00:15:19.350Z",
   "subscribers": 10915,
   "source": 4
  },
  {
   "ts": "2026-08-11T21:48:33.615Z",
   "subscribers": 10918,
   "source": 4
  },
  {
   "ts": "2026-08-12T19:37:19.802Z",
   "subscribers": 10937,
   "source": 4
  },
  {
   "ts": "2026-08-13T22:49:04.116Z",
   "subscribers": 10952,
   "source": 4
  },
  {
   "ts": "2026-08-15T12:24:53.561Z",
   "subscribers": 10965,
   "source": 4
  },
  {
   "ts": "2026-08-16T20:29:10.726Z",
   "subscribers": 10991,
   "source": 4
  },
  {
   "ts": "2026-08-17T20:37:11.546Z",
   "subscribers": 10997,
   "source": 4
  },
  {
   "ts": "2026-08-18T20:56:19.132Z",
   "subscribers": 11018,
   "source": 4
  },
  {
   "ts": "2026-08-19T17:29:14.955Z",
   "subscribers": 11032,
   "source": 4
  },
  {
   "ts": "2026-08-20T17:44:56.615Z",
   "subscribers": 11053,
   "source": 4
  }
 ]
}