{
 "meta": {
  "dataset": "Subscriber history — @udacitycoursefree",
  "channel": "https://tgregister.com/channel/udacitycoursefree",
  "retrieved_at": "2026-08-20T11:23:55.574Z",
  "licence": "CC BY 4.0 — attribute to tgregister.com",
  "n_readings": 14,
  "window": {
   "from": "2026-08-06T16:24:12.469Z",
   "to": "2026-08-19T11:25:40.643Z"
  },
  "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": "2026-08-06T16:24:12.469Z",
   "subscribers": 12250,
   "source": 0
  },
  {
   "ts": "2026-08-06T16:33:27.847Z",
   "subscribers": 12250,
   "source": 3
  },
  {
   "ts": "2026-08-07T12:57:47.252Z",
   "subscribers": 12247,
   "source": 4
  },
  {
   "ts": "2026-08-08T11:08:00.853Z",
   "subscribers": 12245,
   "source": 4
  },
  {
   "ts": "2026-08-09T08:11:27.912Z",
   "subscribers": 12237,
   "source": 4
  },
  {
   "ts": "2026-08-10T06:53:21.972Z",
   "subscribers": 12229,
   "source": 4
  },
  {
   "ts": "2026-08-11T06:52:50.399Z",
   "subscribers": 12213,
   "source": 4
  },
  {
   "ts": "2026-08-12T09:14:28.108Z",
   "subscribers": 12210,
   "source": 4
  },
  {
   "ts": "2026-08-13T12:45:56.138Z",
   "subscribers": 12199,
   "source": 4
  },
  {
   "ts": "2026-08-14T23:15:34.999Z",
   "subscribers": 12192,
   "source": 4
  },
  {
   "ts": "2026-08-16T08:54:35.956Z",
   "subscribers": 12183,
   "source": 4
  },
  {
   "ts": "2026-08-17T13:37:03.877Z",
   "subscribers": 12172,
   "source": 4
  },
  {
   "ts": "2026-08-18T11:07:19.570Z",
   "subscribers": 12168,
   "source": 4
  },
  {
   "ts": "2026-08-19T11:25:40.643Z",
   "subscribers": 12164,
   "source": 4
  }
 ]
}