{
  "title": "一组自编中文样例的 Copyleaks 改写前后对照",
  "sample_origin": "站点维护者使用助手创建的虚构样例；非真实实验或客户稿件",
  "case_id": "holdout_long_discussion",
  "rewrite_prompt_version": "rebuild_v3",
  "rewrite_prompt_sha256_normalized": "b646c7ab3416ed7772cdcd7273c8ddde40352ff1cd6a6df25e3c86569ffdde5e",
  "rewrite_model": "deepseek-v4-pro",
  "detector": "Copyleaks public website",
  "detector_url": "https://copyleaks.com/ai-detector",
  "detector_model_version": null,
  "sensitivity": "2/3",
  "record_type": "站点维护者对真实网页结果的转录；完整扫描报告未导出",
  "original": {
    "observed_at_utc": "2026-09-12T16:37:08Z",
    "input_characters": 483,
    "input_sha256": "c4d1b61c3501f538bfd9761969c947b5dadd47b6b2a3c55c1a64e48474c13987",
    "displayed_percentage": 100,
    "displayed_heading": "AI Content Found",
    "displayed_ai_text_words": 438,
    "displayed_human_text_words": 0,
    "view_submitted_text_checked": true
  },
  "rewritten": {
    "observed_at_utc": "2026-09-12T16:38:36Z",
    "input_characters": 436,
    "input_sha256": "e0a1edb1573e5399f2599bb798787fc222c78e2c9650157ab84877bde51f3367",
    "displayed_percentage": 0,
    "displayed_heading": "No AI Content Found",
    "displayed_ai_text_words": 0,
    "displayed_human_text_words": 391,
    "view_submitted_text_checked": true
  },
  "change_percentage_points": -100,
  "scope": "单一样例、同一服务、同一可见灵敏度的一次前后对照；不代表其他文本或检测平台，不证明作者身份或真实AI含量。"
}