{
 "meta": {
  "dataset": "Subscriber history — @book_shield",
  "channel": "https://tgregister.com/channel/book_shield",
  "retrieved_at": "2026-09-09T19:43:22.300Z",
  "licence": "CC BY 4.0 — attribute to tgregister.com",
  "n_readings": 10,
  "window": {
   "from": "2026-08-07T18:21:51.940Z",
   "to": "2026-09-08T08:21:25.452Z"
  },
  "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": "2026-08-07T18:21:51.940Z",
   "subscribers": 1678,
   "source": 0
  },
  {
   "ts": "2026-08-07T21:02:51.424Z",
   "subscribers": 1678,
   "source": 3
  },
  {
   "ts": "2026-08-08T11:13:13.100Z",
   "subscribers": 1680,
   "source": 4
  },
  {
   "ts": "2026-08-11T02:51:25.704Z",
   "subscribers": 1678,
   "source": 4
  },
  {
   "ts": "2026-08-14T15:37:45.438Z",
   "subscribers": 1677,
   "source": 4
  },
  {
   "ts": "2026-08-21T05:18:27.226Z",
   "subscribers": 1676,
   "source": 4
  },
  {
   "ts": "2026-08-25T01:48:42.121Z",
   "subscribers": 1677,
   "source": 4
  },
  {
   "ts": "2026-08-28T08:03:09.715Z",
   "subscribers": 1682,
   "source": 4
  },
  {
   "ts": "2026-08-31T06:57:23.436Z",
   "subscribers": 1688,
   "source": 4
  },
  {
   "ts": "2026-09-08T08:21:25.452Z",
   "subscribers": 1692,
   "source": 4
  }
 ]
}