{
 "meta": {
  "dataset": "Subscriber history — @HeadStartSchool",
  "channel": "https://tgregister.com/channel/HeadStartSchool",
  "retrieved_at": "2026-09-11T13:11:23.547Z",
  "licence": "CC BY 4.0 — attribute to tgregister.com",
  "n_readings": 10,
  "window": {
   "from": "2026-08-13T11:46:48.643Z",
   "to": "2026-09-11T12:01:50.714Z"
  },
  "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": "2026-08-13T11:46:48.643Z",
   "subscribers": 1683,
   "source": 3
  },
  {
   "ts": "2026-08-13T16:39:03.367Z",
   "subscribers": 1684,
   "source": 4
  },
  {
   "ts": "2026-08-17T09:52:34.046Z",
   "subscribers": 1688,
   "source": 4
  },
  {
   "ts": "2026-08-20T05:22:18.257Z",
   "subscribers": 1689,
   "source": 4
  },
  {
   "ts": "2026-08-23T16:43:57.848Z",
   "subscribers": 1697,
   "source": 4
  },
  {
   "ts": "2026-08-27T02:34:03.595Z",
   "subscribers": 1689,
   "source": 4
  },
  {
   "ts": "2026-08-30T07:45:30.013Z",
   "subscribers": 1685,
   "source": 4
  },
  {
   "ts": "2026-09-02T05:28:10.410Z",
   "subscribers": 1677,
   "source": 4
  },
  {
   "ts": "2026-09-06T15:20:13.002Z",
   "subscribers": 1689,
   "source": 4
  },
  {
   "ts": "2026-09-11T12:01:50.714Z",
   "subscribers": 1696,
   "source": 4
  }
 ]
}