{
 "meta": {
  "dataset": "Subscriber history — @gpsc_materials",
  "channel": "https://tgregister.com/channel/gpsc_materials",
  "retrieved_at": "2026-08-19T03:16:01.462Z",
  "licence": "CC BY 4.0 — attribute to tgregister.com",
  "n_readings": 13,
  "window": {
   "from": "2026-08-06T07:21:53.693Z",
   "to": "2026-08-18T20:43:20.165Z"
  },
  "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": "2026-08-06T07:21:53.693Z",
   "subscribers": 11532,
   "source": 3
  },
  {
   "ts": "2026-08-06T12:30:26.847Z",
   "subscribers": 11525,
   "source": 4
  },
  {
   "ts": "2026-08-07T13:00:33.656Z",
   "subscribers": 11520,
   "source": 4
  },
  {
   "ts": "2026-08-08T15:17:28.929Z",
   "subscribers": 11513,
   "source": 4
  },
  {
   "ts": "2026-08-09T17:21:10.743Z",
   "subscribers": 11502,
   "source": 4
  },
  {
   "ts": "2026-08-10T20:07:26.375Z",
   "subscribers": 11493,
   "source": 4
  },
  {
   "ts": "2026-08-11T22:58:57.286Z",
   "subscribers": 11495,
   "source": 4
  },
  {
   "ts": "2026-08-13T00:26:12.298Z",
   "subscribers": 11489,
   "source": 4
  },
  {
   "ts": "2026-08-14T06:58:37.026Z",
   "subscribers": 11483,
   "source": 4
  },
  {
   "ts": "2026-08-15T16:37:01.834Z",
   "subscribers": 11481,
   "source": 4
  },
  {
   "ts": "2026-08-16T21:33:00.441Z",
   "subscribers": 11475,
   "source": 4
  },
  {
   "ts": "2026-08-17T22:33:11.744Z",
   "subscribers": 11468,
   "source": 4
  },
  {
   "ts": "2026-08-18T20:43:20.165Z",
   "subscribers": 11465,
   "source": 4
  }
 ]
}