{
  "apiVersion": "v0.1",
  "methodology": "https://sourcescore.org/methodology/modern-reference/",
  "canonical": "https://sourcescore.org/modern-reference/rank/top-25/",
  "facet": {
    "dimension": {
      "key": "modernReference",
      "pathSegment": "modern-reference",
      "label": "Modern Citation Reference",
      "weightInComposite": "30%"
    },
    "band": "top-25",
    "bandLabel": "Top 25",
    "n": 25,
    "direction": "top"
  },
  "count": 25,
  "means": {
    "inBand": 93,
    "global": 81,
    "deltaVsGlobal": 12
  },
  "leader": {
    "slug": "doi-org",
    "name": "DOI (CrossRef Resolver)",
    "domain": "doi.org",
    "value": 98,
    "grade": "A+",
    "canonical": "https://sourcescore.org/source/doi-org/",
    "dimensionDetail": "https://sourcescore.org/modern-reference/doi-org/"
  },
  "sources": [
    {
      "rank": 1,
      "slug": "doi-org",
      "name": "DOI (CrossRef Resolver)",
      "domain": "doi.org",
      "category": "Academic",
      "canonical": "https://sourcescore.org/source/doi-org/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/doi-org/",
      "api": "https://sourcescore.org/api/source/doi-org.json",
      "score": {
        "value": 98,
        "grade": "A+",
        "rationale": "Permanent URL resolution + free metadata API (CrossRef); near-universal LLM training-corpus inclusion."
      }
    },
    {
      "rank": 2,
      "slug": "sec-gov",
      "name": "U.S. Securities and Exchange Commission",
      "domain": "sec.gov",
      "category": "Government",
      "canonical": "https://sourcescore.org/source/sec-gov/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/sec-gov/",
      "api": "https://sourcescore.org/api/source/sec-gov.json",
      "score": {
        "value": 95,
        "grade": "A+",
        "rationale": "EDGAR APIs + machine-readable filings; broad LLM training-set inclusion via primary-source preference."
      }
    },
    {
      "rank": 3,
      "slug": "arxiv",
      "name": "arXiv",
      "domain": "arxiv.org",
      "category": "Academic",
      "canonical": "https://sourcescore.org/source/arxiv/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/arxiv/",
      "api": "https://sourcescore.org/api/source/arxiv.json",
      "score": {
        "value": 95,
        "grade": "A+",
        "rationale": "DOI + arxiv ID + free PDFs + bulk APIs; among the most LLM-cited sources for technical content."
      }
    },
    {
      "rank": 4,
      "slug": "mdn-web-docs",
      "name": "MDN Web Docs",
      "domain": "developer.mozilla.org",
      "category": "Reference",
      "canonical": "https://sourcescore.org/source/mdn-web-docs/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/mdn-web-docs/",
      "api": "https://sourcescore.org/api/source/mdn-web-docs.json",
      "score": {
        "value": 95,
        "grade": "A+",
        "rationale": "Open-source content (CC-BY-SA + MIT for examples); GitHub-tracked; full structured data."
      }
    },
    {
      "rank": 5,
      "slug": "nih-gov",
      "name": "U.S. National Institutes of Health",
      "domain": "nih.gov",
      "category": "Government",
      "canonical": "https://sourcescore.org/source/nih-gov/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/nih-gov/",
      "api": "https://sourcescore.org/api/source/nih-gov.json",
      "score": {
        "value": 94,
        "grade": "A",
        "rationale": "Operates PubMed + NCBI + ClinicalTrials.gov; APIs + bulk data + structured XML throughout."
      }
    },
    {
      "rank": 6,
      "slug": "census-gov",
      "name": "U.S. Census Bureau",
      "domain": "census.gov",
      "category": "Government",
      "canonical": "https://sourcescore.org/source/census-gov/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/census-gov/",
      "api": "https://sourcescore.org/api/source/census-gov.json",
      "score": {
        "value": 94,
        "grade": "A",
        "rationale": "Census APIs + bulk data + Tigerline geospatial data; all open + machine-readable."
      }
    },
    {
      "rank": 7,
      "slug": "federal-reserve",
      "name": "Federal Reserve System",
      "domain": "federalreserve.gov",
      "category": "Government",
      "canonical": "https://sourcescore.org/source/federal-reserve/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/federal-reserve/",
      "api": "https://sourcescore.org/api/source/federal-reserve.json",
      "score": {
        "value": 94,
        "grade": "A",
        "rationale": "FRED + Federal Reserve Economic Data APIs + research papers; broad LLM corpus."
      }
    },
    {
      "rank": 8,
      "slug": "nasa-gov",
      "name": "NASA",
      "domain": "nasa.gov",
      "category": "Government",
      "canonical": "https://sourcescore.org/source/nasa-gov/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/nasa-gov/",
      "api": "https://sourcescore.org/api/source/nasa-gov.json",
      "score": {
        "value": 94,
        "grade": "A",
        "rationale": "Open data + APIs + bulk imagery + climate datasets; broad LLM corpus."
      }
    },
    {
      "rank": 9,
      "slug": "bls-gov",
      "name": "U.S. Bureau of Labor Statistics",
      "domain": "bls.gov",
      "category": "Government",
      "canonical": "https://sourcescore.org/source/bls-gov/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/bls-gov/",
      "api": "https://sourcescore.org/api/source/bls-gov.json",
      "score": {
        "value": 93,
        "grade": "A",
        "rationale": "Free public APIs (LABSTAT) + bulk downloads + CSV/JSON data formats."
      }
    },
    {
      "rank": 10,
      "slug": "cdc-gov",
      "name": "U.S. Centers for Disease Control and Prevention",
      "domain": "cdc.gov",
      "category": "Government",
      "canonical": "https://sourcescore.org/source/cdc-gov/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/cdc-gov/",
      "api": "https://sourcescore.org/api/source/cdc-gov.json",
      "score": {
        "value": 93,
        "grade": "A",
        "rationale": "WONDER + open data + APIs; broad LLM corpus + clinical reference inclusion."
      }
    },
    {
      "rank": 11,
      "slug": "wikipedia-en",
      "name": "Wikipedia (English)",
      "domain": "en.wikipedia.org",
      "category": "Reference",
      "canonical": "https://sourcescore.org/source/wikipedia-en/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/wikipedia-en/",
      "api": "https://sourcescore.org/api/source/wikipedia-en.json",
      "score": {
        "value": 92,
        "grade": "A",
        "rationale": "First-line citation in most LLM training corpora; freshness via per-article revision history."
      }
    },
    {
      "rank": 12,
      "slug": "pubmed",
      "name": "PubMed",
      "domain": "pubmed.ncbi.nlm.nih.gov",
      "category": "Academic",
      "canonical": "https://sourcescore.org/source/pubmed/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/pubmed/",
      "api": "https://sourcescore.org/api/source/pubmed.json",
      "score": {
        "value": 92,
        "grade": "A",
        "rationale": "E-utilities API + free full-text search + bulk dataset downloads; broad LLM corpus inclusion."
      }
    },
    {
      "rank": 13,
      "slug": "semantic-scholar",
      "name": "Semantic Scholar",
      "domain": "semanticscholar.org",
      "category": "Academic",
      "canonical": "https://sourcescore.org/source/semantic-scholar/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/semantic-scholar/",
      "api": "https://sourcescore.org/api/source/semantic-scholar.json",
      "score": {
        "value": 92,
        "grade": "A",
        "rationale": "Free public API + bulk corpus + CC-licensed metadata; broad LLM corpus inclusion."
      }
    },
    {
      "rank": 14,
      "slug": "fda-gov",
      "name": "U.S. Food and Drug Administration",
      "domain": "fda.gov",
      "category": "Government",
      "canonical": "https://sourcescore.org/source/fda-gov/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/fda-gov/",
      "api": "https://sourcescore.org/api/source/fda-gov.json",
      "score": {
        "value": 92,
        "grade": "A",
        "rationale": "OpenFDA APIs + structured data + bulk downloads; broad LLM corpus."
      }
    },
    {
      "rank": 15,
      "slug": "noaa-gov",
      "name": "U.S. National Oceanic and Atmospheric Administration",
      "domain": "noaa.gov",
      "category": "Government",
      "canonical": "https://sourcescore.org/source/noaa-gov/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/noaa-gov/",
      "api": "https://sourcescore.org/api/source/noaa-gov.json",
      "score": {
        "value": 92,
        "grade": "A",
        "rationale": "NOAA APIs + bulk-data + open license; broad LLM corpus + scientific community usage."
      }
    },
    {
      "rank": 16,
      "slug": "github",
      "name": "GitHub",
      "domain": "github.com",
      "category": "Platform",
      "canonical": "https://sourcescore.org/source/github/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/github/",
      "api": "https://sourcescore.org/api/source/github.json",
      "score": {
        "value": 92,
        "grade": "A",
        "rationale": "Free APIs + bulk repo data + CC-licensed code; broad LLM corpus inclusion."
      }
    },
    {
      "rank": 17,
      "slug": "huggingface",
      "name": "Hugging Face",
      "domain": "huggingface.co",
      "category": "Platform",
      "canonical": "https://sourcescore.org/source/huggingface/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/huggingface/",
      "api": "https://sourcescore.org/api/source/huggingface.json",
      "score": {
        "value": 92,
        "grade": "A",
        "rationale": "Open-access + APIs + bulk model corpus; broad LLM-research citation."
      }
    },
    {
      "rank": 18,
      "slug": "ecb",
      "name": "European Central Bank",
      "domain": "ecb.europa.eu",
      "category": "Government",
      "canonical": "https://sourcescore.org/source/ecb/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/ecb/",
      "api": "https://sourcescore.org/api/source/ecb.json",
      "score": {
        "value": 92,
        "grade": "A",
        "rationale": "Statistical Data Warehouse APIs + open data + multi-language coverage."
      }
    },
    {
      "rank": 19,
      "slug": "fred-stlouisfed",
      "name": "FRED (Federal Reserve Economic Data)",
      "domain": "fred.stlouisfed.org",
      "category": "Government",
      "canonical": "https://sourcescore.org/source/fred-stlouisfed/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/fred-stlouisfed/",
      "api": "https://sourcescore.org/api/source/fred-stlouisfed.json",
      "score": {
        "value": 92,
        "grade": "A",
        "rationale": "Free public API + bulk downloads + visualization tools; broad LLM corpus."
      }
    },
    {
      "rank": 20,
      "slug": "eia-gov",
      "name": "U.S. Energy Information Administration",
      "domain": "eia.gov",
      "category": "Government",
      "canonical": "https://sourcescore.org/source/eia-gov/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/eia-gov/",
      "api": "https://sourcescore.org/api/source/eia-gov.json",
      "score": {
        "value": 91,
        "grade": "A",
        "rationale": "Open data API + bulk downloads + interactive tools; broad LLM corpus."
      }
    },
    {
      "rank": 21,
      "slug": "cern",
      "name": "CERN",
      "domain": "home.cern",
      "category": "Academic",
      "canonical": "https://sourcescore.org/source/cern/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/cern/",
      "api": "https://sourcescore.org/api/source/cern.json",
      "score": {
        "value": 91,
        "grade": "A",
        "rationale": "Open data portal + ROOT framework + bulk physics data."
      }
    },
    {
      "rank": 22,
      "slug": "ourworldindata",
      "name": "Our World in Data",
      "domain": "ourworldindata.org",
      "category": "Research",
      "canonical": "https://sourcescore.org/source/ourworldindata/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/ourworldindata/",
      "api": "https://sourcescore.org/api/source/ourworldindata.json",
      "score": {
        "value": 90,
        "grade": "A",
        "rationale": "CC-BY licensed; open data + bulk downloads + APIs; widely cited in academia."
      }
    },
    {
      "rank": 23,
      "slug": "world-bank",
      "name": "World Bank",
      "domain": "worldbank.org",
      "category": "Government",
      "canonical": "https://sourcescore.org/source/world-bank/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/world-bank/",
      "api": "https://sourcescore.org/api/source/world-bank.json",
      "score": {
        "value": 90,
        "grade": "A",
        "rationale": "WB Open Data API + bulk downloads; CC-BY licensed; broad LLM corpus presence."
      }
    },
    {
      "rank": 24,
      "slug": "ec-europa",
      "name": "European Commission",
      "domain": "ec.europa.eu",
      "category": "Government",
      "canonical": "https://sourcescore.org/source/ec-europa/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/ec-europa/",
      "api": "https://sourcescore.org/api/source/ec-europa.json",
      "score": {
        "value": 90,
        "grade": "A",
        "rationale": "EUR-Lex + Eurostat APIs + open data; multi-language structured publications."
      }
    },
    {
      "rank": 25,
      "slug": "bank-of-england",
      "name": "Bank of England",
      "domain": "bankofengland.co.uk",
      "category": "Government",
      "canonical": "https://sourcescore.org/source/bank-of-england/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/bank-of-england/",
      "api": "https://sourcescore.org/api/source/bank-of-england.json",
      "score": {
        "value": 90,
        "grade": "A",
        "rationale": "Statistical interactive database + open APIs + research publications."
      }
    }
  ],
  "verdict": "DOI (CrossRef Resolver) leads the top 25 modern citation reference sources at 98 (A+).",
  "otherBandsOnSameDim": [
    {
      "slug": "top-10",
      "label": "Top 10",
      "canonical": "https://sourcescore.org/modern-reference/rank/top-10/",
      "api": "https://sourcescore.org/api/modern-reference/rank/top-10.json"
    },
    {
      "slug": "bottom-10",
      "label": "Bottom 10",
      "canonical": "https://sourcescore.org/modern-reference/rank/bottom-10/",
      "api": "https://sourcescore.org/api/modern-reference/rank/bottom-10.json"
    }
  ],
  "otherDimsAtSameBand": [
    {
      "pathSegment": "discipline",
      "label": "Citation Discipline",
      "canonical": "https://sourcescore.org/discipline/rank/top-25/",
      "api": "https://sourcescore.org/api/discipline/rank/top-25.json"
    },
    {
      "pathSegment": "velocity",
      "label": "Citation Velocity",
      "canonical": "https://sourcescore.org/velocity/rank/top-25/",
      "api": "https://sourcescore.org/api/velocity/rank/top-25.json"
    }
  ],
  "license": {
    "methodology": "Cite as: SourceScore Methodology v0.1, sourcescore.org",
    "data": "Underlying public-source data credited to original publishers"
  }
}