{
  "admin": "Atlas IP Holdings LLC",
  "family": "BR-Index",
  "last_updated_utc": "2026-01-09T00:00:00Z",
  "policy_url": "/methodology",
  "items": [
    {
      "method_rev": "1.0.0",
      "title": "Initial public methodology",
      "effective_date": "2026-01-15",
      "is_active": true,
      "classification": "material",
      "summary": "Public launch of BR-Index with blended formula (w_ref=0.70, w_vendor=0.30), vendor eligibility rules, outlier handling, and fallback policy.",
      "impact_note": "New index family; no back-series change.",
      "links": {
        "methodology_pdf": "/docs/br-index-methodology.pdf",
        "governance": "/governance"
      }
    },
    {
      "method_rev": "1.0.1",
      "title": "Documentation clarification",
      "effective_date": "2026-02-01",
      "is_active": false,
      "classification": "minor",
      "summary": "Clarified rounding policy and UTC cutoffs; no formula change.",
      "impact_note": "Expected price impact < 0.05% over 12 months.",
      "links": {
        "diff": "/docs/changes/1.0.1-notes.html"
      }
    }
  ]
}