{
 "meta": {
  "dataset": "Subscriber history — @class_11_chemistry_notes",
  "channel": "https://tgregister.com/channel/class_11_chemistry_notes",
  "retrieved_at": "2026-08-21T21:35:01.459Z",
  "licence": "CC BY 4.0 — attribute to tgregister.com",
  "n_readings": 14,
  "window": {
   "from": "2026-08-06T23:01:01.680Z",
   "to": "2026-08-21T09:34:50.141Z"
  },
  "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": "2026-08-06T23:01:01.680Z",
   "subscribers": 15890,
   "source": 3
  },
  {
   "ts": "2026-08-07T06:16:49.811Z",
   "subscribers": 15889,
   "source": 4
  },
  {
   "ts": "2026-08-08T06:21:29.559Z",
   "subscribers": 15895,
   "source": 4
  },
  {
   "ts": "2026-08-09T05:02:43.233Z",
   "subscribers": 15889,
   "source": 4
  },
  {
   "ts": "2026-08-10T05:53:37.860Z",
   "subscribers": 15878,
   "source": 4
  },
  {
   "ts": "2026-08-11T02:41:41.190Z",
   "subscribers": 15868,
   "source": 4
  },
  {
   "ts": "2026-08-12T03:24:11.017Z",
   "subscribers": 15869,
   "source": 4
  },
  {
   "ts": "2026-08-13T06:26:54.580Z",
   "subscribers": 15870,
   "source": 4
  },
  {
   "ts": "2026-08-16T05:05:35.530Z",
   "subscribers": 15858,
   "source": 4
  },
  {
   "ts": "2026-08-17T12:33:39.646Z",
   "subscribers": 15846,
   "source": 4
  },
  {
   "ts": "2026-08-18T11:22:06.497Z",
   "subscribers": 15836,
   "source": 4
  },
  {
   "ts": "2026-08-19T12:58:43.389Z",
   "subscribers": 15835,
   "source": 4
  },
  {
   "ts": "2026-08-20T10:37:38.143Z",
   "subscribers": 15840,
   "source": 4
  },
  {
   "ts": "2026-08-21T09:34:50.141Z",
   "subscribers": 15836,
   "source": 4
  }
 ]
}