{
 "meta": {
  "dataset": "Subscriber history — @class_12th_math_objective",
  "channel": "https://tgregister.com/channel/class_12th_math_objective",
  "retrieved_at": "2026-09-11T11:59:03.416Z",
  "licence": "CC BY 4.0 — attribute to tgregister.com",
  "n_readings": 23,
  "window": {
   "from": "2026-08-11T20:00:57.540Z",
   "to": "2026-09-09T10:58:32.492Z"
  },
  "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": "2026-08-11T20:00:57.540Z",
   "subscribers": 28977,
   "source": 3
  },
  {
   "ts": "2026-08-12T08:32:30.202Z",
   "subscribers": 28951,
   "source": 4
  },
  {
   "ts": "2026-08-13T10:25:31.153Z",
   "subscribers": 28869,
   "source": 4
  },
  {
   "ts": "2026-08-14T20:39:08.756Z",
   "subscribers": 28783,
   "source": 4
  },
  {
   "ts": "2026-08-16T14:15:20.958Z",
   "subscribers": 28658,
   "source": 4
  },
  {
   "ts": "2026-08-17T16:38:55.741Z",
   "subscribers": 28595,
   "source": 4
  },
  {
   "ts": "2026-08-18T17:52:25.791Z",
   "subscribers": 28503,
   "source": 4
  },
  {
   "ts": "2026-08-19T21:12:00.495Z",
   "subscribers": 28376,
   "source": 4
  },
  {
   "ts": "2026-08-20T23:35:14.102Z",
   "subscribers": 28271,
   "source": 4
  },
  {
   "ts": "2026-08-22T05:36:00.430Z",
   "subscribers": 28176,
   "source": 4
  },
  {
   "ts": "2026-08-24T00:55:42.214Z",
   "subscribers": 27942,
   "source": 4
  },
  {
   "ts": "2026-08-25T04:22:51.211Z",
   "subscribers": 27846,
   "source": 4
  },
  {
   "ts": "2026-08-26T02:53:53.799Z",
   "subscribers": 27777,
   "source": 4
  },
  {
   "ts": "2026-08-27T03:55:02.806Z",
   "subscribers": 27689,
   "source": 4
  },
  {
   "ts": "2026-08-28T03:13:43.458Z",
   "subscribers": 27658,
   "source": 4
  },
  {
   "ts": "2026-08-29T05:23:12.968Z",
   "subscribers": 27617,
   "source": 4
  },
  {
   "ts": "2026-08-30T08:16:30.660Z",
   "subscribers": 27542,
   "source": 4
  },
  {
   "ts": "2026-08-31T09:45:09.527Z",
   "subscribers": 27445,
   "source": 4
  },
  {
   "ts": "2026-09-01T12:48:46.188Z",
   "subscribers": 27387,
   "source": 4
  },
  {
   "ts": "2026-09-02T15:48:53.928Z",
   "subscribers": 27278,
   "source": 4
  },
  {
   "ts": "2026-09-03T22:17:48.996Z",
   "subscribers": 27238,
   "source": 4
  },
  {
   "ts": "2026-09-06T05:39:32.943Z",
   "subscribers": 27079,
   "source": 4
  },
  {
   "ts": "2026-09-09T10:58:32.492Z",
   "subscribers": 26861,
   "source": 4
  }
 ]
}