{
  "meta": {
    "subject": "Roblox group 13921047",
    "retrieved": "2026-10-21T08:14:21.872Z",
    "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": 13921047,
    "name": "KILL ON SIGHT MAFIA (KOS)",
    "created": "2022-01-30T22:40:16.970Z",
    "owner_user_id": 878157521,
    "member_count": 1552,
    "has_verified_badge": false,
    "is_locked": false,
    "status": "live",
    "first_measured": "2026-08-10T12:14:14.347Z",
    "last_measured": "2026-10-21T07:40:45.704Z"
  },
  "member_history": [
    {
      "measured_at": "2026-08-10T12:14:14.347Z",
      "member_count": 1552
    },
    {
      "measured_at": "2026-08-10T15:32:24.742Z",
      "member_count": 1553
    },
    {
      "measured_at": "2026-08-15T02:33:39.432Z",
      "member_count": 1552
    },
    {
      "measured_at": "2026-08-17T22:01:12.387Z",
      "member_count": 1553
    },
    {
      "measured_at": "2026-08-24T06:40:20.133Z",
      "member_count": 1554
    },
    {
      "measured_at": "2026-08-25T01:41:13.296Z",
      "member_count": 1553
    },
    {
      "measured_at": "2026-09-10T08:30:36.951Z",
      "member_count": 1554
    },
    {
      "measured_at": "2026-09-10T21:50:51.227Z",
      "member_count": 1552
    },
    {
      "measured_at": "2026-09-12T19:50:36.259Z",
      "member_count": 1553
    },
    {
      "measured_at": "2026-09-12T21:41:18.677Z",
      "member_count": 1554
    },
    {
      "measured_at": "2026-09-16T13:31:00.766Z",
      "member_count": 1553
    },
    {
      "measured_at": "2026-10-06T01:02:02.257Z",
      "member_count": 1552
    },
    {
      "measured_at": "2026-10-14T22:50:39.442Z",
      "member_count": 1551
    },
    {
      "measured_at": "2026-10-15T12:11:00.323Z",
      "member_count": 1552
    }
  ],
  "name_history": [
    {
      "name": "KILL ON SIGHT MAFIA (KOS)",
      "first_seen": "2026-08-10T12:14:14.347Z",
      "last_seen": "2026-10-21T07:40:45.704Z",
      "current": true
    }
  ],
  "ownership_events": [
    {
      "observed_at": "2026-08-10T16:02:54.831Z",
      "previous_owner": null,
      "new_owner": 878157521
    }
  ]
}