{
 "meta": {
  "dataset": "Subscriber history — @BCA_Sem1_Notes",
  "channel": "https://tgregister.com/channel/BCA_Sem1_Notes",
  "retrieved_at": "2026-09-17T05:29:01.172Z",
  "licence": "CC BY 4.0 — attribute to tgregister.com",
  "n_readings": 13,
  "window": {
   "from": "2026-08-08T11:01:52.639Z",
   "to": "2026-09-14T03:55:24.222Z"
  },
  "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": "2026-08-08T11:01:52.639Z",
   "subscribers": 3443,
   "source": 3
  },
  {
   "ts": "2026-08-08T19:37:42.608Z",
   "subscribers": 3444,
   "source": 4
  },
  {
   "ts": "2026-08-11T15:08:38.531Z",
   "subscribers": 3442,
   "source": 4
  },
  {
   "ts": "2026-08-15T06:23:51.320Z",
   "subscribers": 3431,
   "source": 4
  },
  {
   "ts": "2026-08-18T00:33:41.828Z",
   "subscribers": 3430,
   "source": 4
  },
  {
   "ts": "2026-08-20T14:04:31.624Z",
   "subscribers": 3424,
   "source": 4
  },
  {
   "ts": "2026-08-23T20:28:53.704Z",
   "subscribers": 3417,
   "source": 4
  },
  {
   "ts": "2026-08-27T00:53:32.023Z",
   "subscribers": 3416,
   "source": 4
  },
  {
   "ts": "2026-08-29T23:44:33.470Z",
   "subscribers": 3411,
   "source": 4
  },
  {
   "ts": "2026-09-01T17:02:49.359Z",
   "subscribers": 3410,
   "source": 4
  },
  {
   "ts": "2026-09-05T01:41:58.939Z",
   "subscribers": 3404,
   "source": 4
  },
  {
   "ts": "2026-09-10T15:36:46.051Z",
   "subscribers": 3399,
   "source": 4
  },
  {
   "ts": "2026-09-14T03:55:24.222Z",
   "subscribers": 3394,
   "source": 4
  }
 ]
}