{
  "date": "2026-09-09",
  "browser": "Brave, Chromium 152 user agent, macOS",
  "method": "Two local HTTP origins, explicit strict-origin-when-cross-origin source policy, six authored cases. No ChatGPT or GA4 runtime test.",
  "observedCases": [
    {
      "case": "normal",
      "requestReferrer": "http://127.0.0.1:8770/",
      "documentReferrer": "http://127.0.0.1:8770/",
      "utmSource": "",
      "pass": true
    },
    {
      "case": "noreferrer",
      "requestReferrer": "",
      "documentReferrer": "",
      "utmSource": "",
      "pass": true
    },
    {
      "case": "no-referrer",
      "requestReferrer": "",
      "documentReferrer": "",
      "utmSource": "",
      "pass": true
    },
    {
      "case": "tagged-noreferrer",
      "requestReferrer": "",
      "documentReferrer": "",
      "utmSource": "chatgpt.com",
      "pass": true
    },
    {
      "case": "direct-tagged",
      "requestReferrer": "",
      "documentReferrer": "",
      "utmSource": "chatgpt.com",
      "pass": true
    },
    {
      "case": "direct-plain",
      "requestReferrer": "",
      "documentReferrer": "",
      "utmSource": "",
      "pass": true
    }
  ],
  "sourceTagIsSynthetic": true
}