{
 "meta": {
  "dataset": "Subscriber history — @department_bme",
  "channel": "https://tgregister.com/channel/department_bme",
  "retrieved_at": "2026-08-18T08:19:13.158Z",
  "licence": "CC BY 4.0 — attribute to tgregister.com",
  "n_readings": 6,
  "window": {
   "from": "2026-08-06T17:47:06.304Z",
   "to": "2026-08-16T21:16:50.781Z"
  },
  "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": "2026-08-06T17:47:06.304Z",
   "subscribers": 10013,
   "source": 3
  },
  {
   "ts": "2026-08-07T00:06:29.010Z",
   "subscribers": 10013,
   "source": 4
  },
  {
   "ts": "2026-08-07T23:35:03.405Z",
   "subscribers": 9983,
   "source": 4
  },
  {
   "ts": "2026-08-10T13:47:54.407Z",
   "subscribers": 9776,
   "source": 4
  },
  {
   "ts": "2026-08-13T08:04:23.492Z",
   "subscribers": 9587,
   "source": 4
  },
  {
   "ts": "2026-08-16T21:16:50.781Z",
   "subscribers": 9336,
   "source": 4
  }
 ]
}