{
 "meta": {
  "dataset": "Subscriber history — @Butterfly_Library",
  "channel": "https://tgregister.com/channel/Butterfly_Library",
  "retrieved_at": "2026-08-20T18:23:45.704Z",
  "licence": "CC BY 4.0 — attribute to tgregister.com",
  "n_readings": 13,
  "window": {
   "from": "2026-08-07T19:27:33.245Z",
   "to": "2026-08-19T18:52:11.696Z"
  },
  "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": "2026-08-07T19:27:33.245Z",
   "subscribers": 11956,
   "source": 0
  },
  {
   "ts": "2026-08-07T19:31:19.985Z",
   "subscribers": 11956,
   "source": 3
  },
  {
   "ts": "2026-08-08T10:37:41.014Z",
   "subscribers": 11918,
   "source": 4
  },
  {
   "ts": "2026-08-09T13:11:07.125Z",
   "subscribers": 11887,
   "source": 4
  },
  {
   "ts": "2026-08-10T13:06:52.102Z",
   "subscribers": 11853,
   "source": 4
  },
  {
   "ts": "2026-08-11T10:34:42.729Z",
   "subscribers": 11826,
   "source": 4
  },
  {
   "ts": "2026-08-12T08:52:44.604Z",
   "subscribers": 11796,
   "source": 4
  },
  {
   "ts": "2026-08-13T11:17:47.653Z",
   "subscribers": 11772,
   "source": 4
  },
  {
   "ts": "2026-08-14T18:36:32.013Z",
   "subscribers": 11753,
   "source": 4
  },
  {
   "ts": "2026-08-16T04:48:28.410Z",
   "subscribers": 11720,
   "source": 4
  },
  {
   "ts": "2026-08-17T14:58:17.566Z",
   "subscribers": 11678,
   "source": 4
  },
  {
   "ts": "2026-08-18T16:42:30.901Z",
   "subscribers": 11654,
   "source": 4
  },
  {
   "ts": "2026-08-19T18:52:11.696Z",
   "subscribers": 11630,
   "source": 4
  }
 ]
}