{
 "meta": {
  "dataset": "Subscriber history — @polytechnicpdf",
  "channel": "https://tgregister.com/channel/polytechnicpdf",
  "retrieved_at": "2026-08-28T22:50:19.786Z",
  "licence": "CC BY 4.0 — attribute to tgregister.com",
  "n_readings": 7,
  "window": {
   "from": "2026-08-07T23:03:12.385Z",
   "to": "2026-08-27T23:12:20.784Z"
  },
  "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": "2026-08-07T23:03:12.385Z",
   "subscribers": 9790,
   "source": 3
  },
  {
   "ts": "2026-08-08T09:48:25.005Z",
   "subscribers": 9793,
   "source": 4
  },
  {
   "ts": "2026-08-14T15:08:31.153Z",
   "subscribers": 9815,
   "source": 4
  },
  {
   "ts": "2026-08-17T13:47:46.420Z",
   "subscribers": 9802,
   "source": 4
  },
  {
   "ts": "2026-08-20T15:44:28.094Z",
   "subscribers": 9821,
   "source": 4
  },
  {
   "ts": "2026-08-24T15:25:18.311Z",
   "subscribers": 9822,
   "source": 4
  },
  {
   "ts": "2026-08-27T23:12:20.784Z",
   "subscribers": 9819,
   "source": 4
  }
 ]
}