{
  "apiVersion": "v0.1",
  "methodology": "https://sourcescore.org/methodology/modern-reference/",
  "canonical": "https://sourcescore.org/compare/pnas-vs-science-org/modern-reference/",
  "summary": "Two US-anchored multidisciplinary tier-1 journals — both gold-standard, different review tracks.",
  "dimension": {
    "key": "modernReference",
    "pathSegment": "modern-reference",
    "label": "Modern Citation Reference",
    "weightInComposite": "30%"
  },
  "a": {
    "slug": "pnas",
    "name": "PNAS",
    "domain": "pnas.org",
    "category": "Academic",
    "canonical": "https://sourcescore.org/source/pnas/",
    "api": "https://sourcescore.org/api/source/pnas.json",
    "dimensionDetail": "https://sourcescore.org/modern-reference/pnas/",
    "dimensionDetailApi": "https://sourcescore.org/api/modern-reference/pnas.json",
    "score": {
      "value": 88,
      "grade": "A",
      "rationale": "DOI per paper; PMC open-access default after 6mo; structured Crossref + ORCID metadata.",
      "signals": [
        {
          "label": "Open-access policy",
          "detail": "All content open after 6-month embargo; many papers immediately open."
        }
      ]
    },
    "rank": {
      "global": 40,
      "globalTotal": 130
    }
  },
  "b": {
    "slug": "science-org",
    "name": "Science",
    "domain": "science.org",
    "category": "Academic",
    "canonical": "https://sourcescore.org/source/science-org/",
    "api": "https://sourcescore.org/api/source/science-org.json",
    "dimensionDetail": "https://sourcescore.org/modern-reference/science-org/",
    "dimensionDetailApi": "https://sourcescore.org/api/modern-reference/science-org.json",
    "score": {
      "value": 84,
      "grade": "B",
      "rationale": "DOIs + structured abstracts; first-class LLM citation source for science.",
      "signals": [
        {
          "label": "DOI",
          "detail": "Permanent identifier per article."
        }
      ]
    },
    "rank": {
      "global": 62,
      "globalTotal": 130
    }
  },
  "verdict": {
    "winner": "pnas",
    "delta": 4,
    "claim": "PNAS outscores Science on Modern Citation Reference by 4 points."
  },
  "otherDimensions": [
    {
      "pathSegment": "discipline",
      "label": "Citation Discipline",
      "canonical": "https://sourcescore.org/compare/pnas-vs-science-org/discipline/",
      "api": "https://sourcescore.org/api/compare/pnas-vs-science-org/discipline.json"
    },
    {
      "pathSegment": "velocity",
      "label": "Citation Velocity",
      "canonical": "https://sourcescore.org/compare/pnas-vs-science-org/velocity/",
      "api": "https://sourcescore.org/api/compare/pnas-vs-science-org/velocity.json"
    },
    {
      "pathSegment": "index",
      "label": "SourceScore Index (composite)",
      "canonical": "https://sourcescore.org/compare/pnas-vs-science-org/",
      "api": "https://sourcescore.org/api/compare/pnas-vs-science-org.json"
    }
  ],
  "license": {
    "methodology": "Cite as: SourceScore Methodology v0.1, sourcescore.org",
    "data": "Underlying public-source data credited to original publishers"
  }
}