{
 "meta": {
  "dataset": "Subscriber history — @upsc_bpsc_notes",
  "channel": "https://tgregister.com/channel/upsc_bpsc_notes",
  "retrieved_at": "2026-09-07T13:00:21.471Z",
  "licence": "CC BY 4.0 — attribute to tgregister.com",
  "n_readings": 27,
  "window": {
   "from": "2026-08-07T01:47:07.937Z",
   "to": "2026-09-06T00:59:28.620Z"
  },
  "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": "2026-08-07T01:47:07.937Z",
   "subscribers": 10660,
   "source": 0
  },
  {
   "ts": "2026-08-07T21:18:47.739Z",
   "subscribers": 10664,
   "source": 4
  },
  {
   "ts": "2026-08-08T18:22:11.383Z",
   "subscribers": 10663,
   "source": 4
  },
  {
   "ts": "2026-08-09T15:13:53.504Z",
   "subscribers": 10662,
   "source": 4
  },
  {
   "ts": "2026-08-10T14:41:50.827Z",
   "subscribers": 10655,
   "source": 4
  },
  {
   "ts": "2026-08-11T14:12:01.874Z",
   "subscribers": 10646,
   "source": 4
  },
  {
   "ts": "2026-08-12T15:28:12.652Z",
   "subscribers": 10644,
   "source": 4
  },
  {
   "ts": "2026-08-13T13:38:00.836Z",
   "subscribers": 10645,
   "source": 4
  },
  {
   "ts": "2026-08-15T00:18:31.083Z",
   "subscribers": 10642,
   "source": 4
  },
  {
   "ts": "2026-08-16T14:03:42.746Z",
   "subscribers": 10634,
   "source": 4
  },
  {
   "ts": "2026-08-17T17:14:21.346Z",
   "subscribers": 10622,
   "source": 4
  },
  {
   "ts": "2026-08-18T15:37:56.176Z",
   "subscribers": 10615,
   "source": 4
  },
  {
   "ts": "2026-08-19T12:46:00.361Z",
   "subscribers": 10607,
   "source": 4
  },
  {
   "ts": "2026-08-20T14:03:19.956Z",
   "subscribers": 10614,
   "source": 4
  },
  {
   "ts": "2026-08-21T17:49:22.314Z",
   "subscribers": 10620,
   "source": 4
  },
  {
   "ts": "2026-08-22T10:42:30.611Z",
   "subscribers": 10620,
   "source": 1
  },
  {
   "ts": "2026-08-23T02:37:44.177Z",
   "subscribers": 10634,
   "source": 4
  },
  {
   "ts": "2026-08-24T17:13:28.767Z",
   "subscribers": 10629,
   "source": 4
  },
  {
   "ts": "2026-08-25T13:53:27.441Z",
   "subscribers": 10624,
   "source": 4
  },
  {
   "ts": "2026-08-26T15:03:45.337Z",
   "subscribers": 10625,
   "source": 4
  },
  {
   "ts": "2026-08-27T14:43:01.577Z",
   "subscribers": 10630,
   "source": 4
  },
  {
   "ts": "2026-08-28T14:44:46.551Z",
   "subscribers": 10620,
   "source": 4
  },
  {
   "ts": "2026-08-30T11:45:46.178Z",
   "subscribers": 10610,
   "source": 4
  },
  {
   "ts": "2026-09-01T13:17:56.144Z",
   "subscribers": 10612,
   "source": 4
  },
  {
   "ts": "2026-09-02T12:33:19.926Z",
   "subscribers": 10605,
   "source": 4
  },
  {
   "ts": "2026-09-03T20:40:34.586Z",
   "subscribers": 10612,
   "source": 4
  },
  {
   "ts": "2026-09-06T00:59:28.620Z",
   "subscribers": 10597,
   "source": 4
  }
 ]
}