{
  "project": "Transductive Science",
  "dataset": "Xianyu equipment field observations",
  "observed_at": "2026-11-08",
  "published_at": "2026-11-08",
  "price_currency": "CNY",
  "source": "Xianyu Android app via USB ADB",
  "verification": "Seller claims and asking prices only; no independent tests",
  "listing_urls_captured": false,
  "purchases": 0,
  "listings": [
    {
      "observed_date": "2026-11-08",
      "platform": "Xianyu",
      "search": "USB2000",
      "model": "Ocean Optics USB2000+",
      "asking_cny": 1680,
      "seller": "水族馆遛狗的附子",
      "location": "中山",
      "condition_claim": "371-1050 nm; 50 um slit; seller claims functional; shipping included",
      "views": 794,
      "wants": 41,
      "notes": "Opened listing via ADB; seller last active 8 hours ago; no independent test or listing URL"
    },
    {
      "observed_date": "2026-11-08",
      "platform": "Xianyu",
      "search": "DS1054Z",
      "model": "Rigol DS1054Z",
      "asking_cny": 1350,
      "seller": "t***7",
      "location": "杭州",
      "condition_claim": "seller claims barely used; upgraded to 100 MHz",
      "views": 44,
      "wants": 3,
      "notes": "Opened listing via ADB; seller last active 4 hours ago; original claimed price CNY 1800; accessories unconfirmed"
    },
    {
      "observed_date": "2026-11-08",
      "platform": "Xianyu",
      "search": "DS1054Z",
      "model": "Rigol DS1054Z",
      "asking_cny": 1000,
      "seller": "地球朴素的荷叶",
      "location": "南京",
      "condition_claim": "seller claims functional; screen cracked; no probes or power cord",
      "views": 71,
      "wants": null,
      "notes": "Opened listing via ADB; seller last active 7 hours ago; as-is no returns; high risk"
    }
  ]
}