{
  "meta": {
    "subject": "Roblox group 15211570",
    "retrieved": "2026-09-08T15:10:42.923Z",
    "licence": "Measured by roregister.com from public Roblox APIs. Free to reuse with attribution to roregister.com. Not affiliated with Roblox Corporation.",
    "notes": {
      "member_history": "insert-on-change; a point exists only where the value differed from the prior reading.",
      "detection_dates": "ownership/name changes are dated when this register observed them, not when they happened."
    }
  },
  "group": {
    "id": 15211570,
    "name": "that library group",
    "created": "2022-06-28T17:04:37.073Z",
    "owner_user_id": 1798295931,
    "member_count": 1618,
    "has_verified_badge": false,
    "is_locked": false,
    "status": "live",
    "first_measured": "2026-08-10T16:23:33.422Z",
    "last_measured": "2026-09-07T22:53:22.299Z"
  },
  "member_history": [
    {
      "measured_at": "2026-08-10T18:43:23.439Z",
      "member_count": 1622
    },
    {
      "measured_at": "2026-08-12T08:46:20.229Z",
      "member_count": 1621
    },
    {
      "measured_at": "2026-08-23T14:58:38.662Z",
      "member_count": 1620
    },
    {
      "measured_at": "2026-08-30T12:08:25.358Z",
      "member_count": 1619
    },
    {
      "measured_at": "2026-09-05T11:53:28.897Z",
      "member_count": 1618
    }
  ],
  "name_history": [
    {
      "name": "that library group",
      "first_seen": "2026-08-10T16:23:24.099Z",
      "last_seen": "2026-09-07T22:53:22.299Z",
      "current": true
    }
  ],
  "ownership_events": [
    {
      "observed_at": "2026-08-12T08:46:20.229Z",
      "previous_owner": 5115477458,
      "new_owner": 1798295931
    }
  ]
}