{
 "meta": {
  "dataset": "Subscriber history — @indexengineering",
  "channel": "https://tgregister.com/channel/indexengineering",
  "retrieved_at": "2026-08-31T06:51:54.105Z",
  "licence": "CC BY 4.0 — attribute to tgregister.com",
  "n_readings": 21,
  "window": {
   "from": "2026-08-07T21:25:26.081Z",
   "to": "2026-08-30T06:14:58.982Z"
  },
  "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": "2026-08-07T21:25:26.081Z",
   "subscribers": 21612,
   "source": 0
  },
  {
   "ts": "2026-08-09T00:50:50.045Z",
   "subscribers": 21604,
   "source": 4
  },
  {
   "ts": "2026-08-10T02:02:16.428Z",
   "subscribers": 21600,
   "source": 4
  },
  {
   "ts": "2026-08-10T22:58:42.190Z",
   "subscribers": 21587,
   "source": 4
  },
  {
   "ts": "2026-08-12T00:22:10.086Z",
   "subscribers": 21575,
   "source": 4
  },
  {
   "ts": "2026-08-13T02:45:16.062Z",
   "subscribers": 21557,
   "source": 4
  },
  {
   "ts": "2026-08-14T15:34:25.270Z",
   "subscribers": 21542,
   "source": 4
  },
  {
   "ts": "2026-08-16T02:56:09.388Z",
   "subscribers": 21542,
   "source": 1
  },
  {
   "ts": "2026-08-16T05:14:39.536Z",
   "subscribers": 21524,
   "source": 4
  },
  {
   "ts": "2026-08-17T14:57:20.430Z",
   "subscribers": 21502,
   "source": 4
  },
  {
   "ts": "2026-08-18T14:53:58.024Z",
   "subscribers": 21494,
   "source": 4
  },
  {
   "ts": "2026-08-19T18:14:31.639Z",
   "subscribers": 21479,
   "source": 4
  },
  {
   "ts": "2026-08-20T17:02:56.746Z",
   "subscribers": 21464,
   "source": 4
  },
  {
   "ts": "2026-08-22T03:55:08.646Z",
   "subscribers": 21445,
   "source": 4
  },
  {
   "ts": "2026-08-23T21:14:06.775Z",
   "subscribers": 21419,
   "source": 4
  },
  {
   "ts": "2026-08-25T04:22:51.211Z",
   "subscribers": 21410,
   "source": 4
  },
  {
   "ts": "2026-08-26T01:57:38.979Z",
   "subscribers": 21401,
   "source": 4
  },
  {
   "ts": "2026-08-27T05:02:45.605Z",
   "subscribers": 21393,
   "source": 4
  },
  {
   "ts": "2026-08-28T02:13:47.197Z",
   "subscribers": 21382,
   "source": 4
  },
  {
   "ts": "2026-08-29T03:34:45.997Z",
   "subscribers": 21378,
   "source": 4
  },
  {
   "ts": "2026-08-30T06:14:58.982Z",
   "subscribers": 21370,
   "source": 4
  }
 ]
}