{
 "schemaVersion": 1,
 "measurement": "official-source-availability-two-week-retest",
 "method": "scripts/probe-official-sources.mjs,口径与 2026-08-08 首测完全一致(同一脚本、同一目标集、双 UA、不跟随重定向、不重试、只请求首页)。",
 "vantage": "direct(中国境内,阿里云上海节点)",
 "controls": {
  "www.gov.cn": "200",
  "www.baidu.com": "200",
  "healthy": true
 },
 "baseline": {
  "date": "2026-08-08",
  "source": "verify/china-official-source-availability/"
 },
 "retest": {
  "date": "2026-08-22",
  "raw": ".ai/probe-cn-2026-08-22.json"
 },
 "hosts": [
  {
   "host": "www.gsxt.gov.cn",
   "label": "企业登记 GSXT",
   "d0808": "521/521",
   "d0822": "521/521",
   "changed": false
  },
  {
   "host": "www.creditchina.gov.cn",
   "label": "信用中国",
   "d0808": "412/412",
   "d0822": "412/412",
   "changed": false
  },
  {
   "host": "wenshu.court.gov.cn",
   "label": "裁判文书",
   "d0808": "200/200",
   "d0822": "200/200",
   "changed": false
  },
  {
   "host": "zxgk.court.gov.cn",
   "label": "执行信息",
   "d0808": "403/200",
   "d0822": "200/200",
   "changed": true
  },
  {
   "host": "sbj.cnipa.gov.cn",
   "label": "商标局",
   "d0808": "403/403",
   "d0822": "403/403",
   "changed": false
  },
  {
   "host": "credit.customs.gov.cn",
   "label": "海关企业信用",
   "d0808": "412/412",
   "d0822": "412/412",
   "changed": false
  },
  {
   "host": "openstd.samr.gov.cn",
   "label": "国家标准全文",
   "d0808": "200/200",
   "d0822": "200/200",
   "changed": false
  },
  {
   "host": "cx.cnca.cn",
   "label": "CCC 认证查询",
   "d0808": "521/521",
   "d0822": "521/521",
   "changed": false
  }
 ],
 "findings": [
  "八个目标主机中七个、连同两个对照组,两周后状态码完全未变 —— 拒绝不是偶发故障,是持续状态。",
  "唯一变化的是执行信息公开网 zxgk.court.gov.cn:命令行 UA 从 403 变为 200,即客户端过滤放宽了。",
  "由此得到一条方法结论:客户端过滤会在两周量级内变动,单次快照会过期,任何『某源打不开』的结论都必须带测量日并定期复测。"
 ],
 "overseasNote": "同日境外代理视角(本机经 127.0.0.1:7897)的一轮作废:政府对照组 www.gov.cn 返回 0 而商业对照组 www.baidu.com 返回 200,按方法第 3 条该路径无效,不能用来说明目标主机。原始记录 .ai/probe-overseas-2026-08-22.json 保留以备复核。"
}