{
  "@context": "https://schema.org",
  "@type": "Dataset",
  "name": "Atlas Commons — Methodology & Known Limits",
  "version": "1",
  "description": "How Atlas Commons figures are produced: a bronze/silver/gold medallion pipeline over named public sources, the grain of each atlas (what one row represents), and the named limit of each atlas. CC0.",
  "url": "https://atlas-commons-vibe.ryanjhunter.workers.dev/methodology",
  "license": "https://creativecommons.org/publicdomain/zero/1.0/",
  "creator": {"@type": "Organization", "name": "Atlas Commons"},
  "statusLabels": {
    "RECORDED": "An authority logged it (it occurred). Highest warrant.",
    "MODELED": "An authority computed it — a score or projection, not a measurement.",
    "DERIVED": "Atlas Commons arithmetic over sourced figures — a rank or ratio; inputs cited.",
    "INTERPRETATION": "Atlas Commons reading or boundary note. Lowest warrant.",
    "fullStandard": "https://atlas-commons-vibe.ryanjhunter.workers.dev/trust.json"
  },
  "pipeline": [
    {"layer": "bronze", "meaning": "The source fetched exactly as published — same rows, same values, the audit trail back to the authority.", "tableCount": 143},
    {"layer": "silver", "meaning": "Deduplicated, typed, standardized (state codes, dates, units). Source errors are surfaced, never silently patched.", "tableCount": 87},
    {"layer": "gold", "meaning": "The serving shape a page reads: aggregated to its grain, each figure carrying its four-status label.", "tableCount": 59}
  ],
  "catalogSnapshot": {"date": "2026-06-19", "totalTables": 289, "live": 132, "planned": 106, "blocked": 45, "note": "Counts cover the catalogued atlases; the full per-table ledger with status is at /02-gap-audit."},
  "atlases": [
    {"atlas": "Coverage", "source": "CMS Marketplace Public Use Files", "grain": "one row = a plan in a rating area", "status": "live", "limit": "The 30 federally-facilitated-marketplace states only; state-based-exchange states are labeled as such, never zero. Plan/benefit metadata, not claims or loss ratios."},
    {"atlas": "Care", "source": "CMS Care Compare", "grain": "one row = a provider (CCN)", "status": "live", "limit": "The overall star is a CMS-weighted composite across measure groups (MODELED). A 3-star provider can be excellent on the one measure you care about and weak on another — cite the underlying measures, not just the star."},
    {"atlas": "Property", "source": "FEMA NRI, NOAA Storm Events, USFS Wildfire Risk", "grain": "two grains: state-level and county-level rows are separate tables", "status": "live", "limit": "Recorded storm history is a single year (2025) — not a multi-year trend; a single severe event can swing a rank. Cross-state death ranks are normalized per-capita where population is known. Insurance-market signals sparse."},
    {"atlas": "Justice", "source": "State statutes, Legal Services Corporation, FJC Integrated Database", "grain": "two grains: SOL table (state x claim type), legal-aid table (provider)", "status": "partial", "limit": "Statutes of limitations are the law as written, NOT a personal deadline. The federal civil-caseload gold has a category-mapping bug and is withheld until fixed."},
    {"atlas": "Finance", "source": "HMDA (CFPB), CFPB Complaints, FDIC, GLEIF", "grain": "one row = a lender or institution", "status": "live", "limit": "The cross-registry corporation match is a name heuristic (DERIVED), superseded by hard-code joins; a lead, not proof. Insurance non-renewal not yet sourced."},
    {"atlas": "Compliance", "source": "GLEIF", "grain": "one row = a legal entity (LEI)", "status": "live", "limit": "A ~1,000-entity demo slice of the multi-million-entity global LEI register, not a census; an entity's absence means 'not in our slice', not 'no LEI exists'. Registration status and structure only, not a verdict on conduct or solvency."},
    {"atlas": "Singulariki", "source": "BLS OEWS (federal), O*NET (federal), Anthropic Economic Index (non-government)", "grain": "one row = an occupation (SOC)", "status": "live", "limit": "BLS OEWS is an establishment survey that lags ~12 months and suppresses estimates for small-population occupations and areas; a missing wage means suppressed, not zero. The Anthropic Economic Index is non-government, labeled where used; federal BLS/O*NET are the authoritative spine."}
  ]
}