{
 "meta": {
  "dataset": "Subscriber history — @practicum_math",
  "channel": "https://tgregister.com/channel/practicum_math",
  "retrieved_at": "2026-09-08T16:18:31.494Z",
  "licence": "CC BY 4.0 — attribute to tgregister.com",
  "n_readings": 25,
  "window": {
   "from": "2026-08-07T12:46:24.628Z",
   "to": "2026-09-06T21:42:25.966Z"
  },
  "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": "2026-08-07T12:46:24.628Z",
   "subscribers": 15680,
   "source": 3
  },
  {
   "ts": "2026-08-08T08:56:24.639Z",
   "subscribers": 15681,
   "source": 4
  },
  {
   "ts": "2026-08-10T10:31:32.781Z",
   "subscribers": 15682,
   "source": 4
  },
  {
   "ts": "2026-08-11T11:08:23.038Z",
   "subscribers": 15679,
   "source": 4
  },
  {
   "ts": "2026-08-13T08:24:40.792Z",
   "subscribers": 15673,
   "source": 4
  },
  {
   "ts": "2026-08-14T19:27:27.509Z",
   "subscribers": 15669,
   "source": 4
  },
  {
   "ts": "2026-08-16T08:47:03.168Z",
   "subscribers": 15717,
   "source": 4
  },
  {
   "ts": "2026-08-17T14:07:54.194Z",
   "subscribers": 15731,
   "source": 4
  },
  {
   "ts": "2026-08-18T17:12:44.238Z",
   "subscribers": 15734,
   "source": 4
  },
  {
   "ts": "2026-08-19T16:55:58.584Z",
   "subscribers": 15733,
   "source": 4
  },
  {
   "ts": "2026-08-20T17:33:28.374Z",
   "subscribers": 15731,
   "source": 4
  },
  {
   "ts": "2026-08-21T16:23:29.774Z",
   "subscribers": 15736,
   "source": 4
  },
  {
   "ts": "2026-08-23T03:34:44.294Z",
   "subscribers": 15733,
   "source": 4
  },
  {
   "ts": "2026-08-24T20:13:28.938Z",
   "subscribers": 15727,
   "source": 4
  },
  {
   "ts": "2026-08-25T22:03:09.781Z",
   "subscribers": 15718,
   "source": 4
  },
  {
   "ts": "2026-08-26T19:06:17.147Z",
   "subscribers": 15713,
   "source": 4
  },
  {
   "ts": "2026-08-27T20:16:53.702Z",
   "subscribers": 15712,
   "source": 4
  },
  {
   "ts": "2026-08-28T23:36:35.971Z",
   "subscribers": 15709,
   "source": 4
  },
  {
   "ts": "2026-08-29T21:43:04.966Z",
   "subscribers": 15707,
   "source": 4
  },
  {
   "ts": "2026-08-30T18:34:36.175Z",
   "subscribers": 15705,
   "source": 4
  },
  {
   "ts": "2026-08-31T21:33:12.400Z",
   "subscribers": 15690,
   "source": 4
  },
  {
   "ts": "2026-09-01T19:28:08.692Z",
   "subscribers": 15688,
   "source": 4
  },
  {
   "ts": "2026-09-02T19:18:40.854Z",
   "subscribers": 15686,
   "source": 4
  },
  {
   "ts": "2026-09-04T08:37:07.023Z",
   "subscribers": 15679,
   "source": 4
  },
  {
   "ts": "2026-09-06T21:42:25.966Z",
   "subscribers": 15670,
   "source": 4
  }
 ]
}