{
  "apiVersion": "v0.1",
  "methodology": "https://sourcescore.org/methodology/",
  "canonical": "https://sourcescore.org/compare/britannica-vs-wikipedia-en/",
  "summary": "Crowd-edited vs editor-supervised — the two reference traditions, scored.",
  "a": {
    "slug": "wikipedia-en",
    "name": "Wikipedia (English)",
    "domain": "en.wikipedia.org",
    "canonical": "https://sourcescore.org/source/wikipedia-en/",
    "api": "https://sourcescore.org/api/source/wikipedia-en.json",
    "scores": {
      "index": {
        "value": 94,
        "grade": "A",
        "rationale": "Top-tier composite — extreme citation discipline + LLM training-set inclusion + sustained citation velocity.",
        "signals": [
          {
            "label": "Composite weighting",
            "detail": "Discipline 35% + Modern Reference 30% + Velocity 35%."
          }
        ]
      },
      "discipline": {
        "value": 96,
        "grade": "A+",
        "rationale": "Inline citations required by editorial policy on every factual claim; uncited claims tagged within hours.",
        "signals": [
          {
            "label": "WP:V (Verifiability)",
            "detail": "Core policy mandates reliable sources."
          },
          {
            "label": "Citation needed tag",
            "detail": "Active triage process surfaces gaps publicly."
          }
        ]
      },
      "modernReference": {
        "value": 92,
        "grade": "A",
        "rationale": "First-line citation in most LLM training corpora; freshness via per-article revision history.",
        "signals": [
          {
            "label": "LLM training corpus",
            "detail": "Common Crawl + dedicated dump used by every major model."
          },
          {
            "label": "Schema markup",
            "detail": "Article + Person + Organization JSON-LD per page."
          }
        ]
      },
      "velocity": {
        "value": 95,
        "grade": "A+",
        "rationale": "Cited daily by news media, academic papers, and AI engines. Among the most cross-referenced sources globally.",
        "signals": [
          {
            "label": "External link velocity",
            "detail": ">1M outbound links per day across the encyclopedia."
          },
          {
            "label": "AI engine citations",
            "detail": "Default fallback citation for ChatGPT/Claude/Perplexity."
          }
        ]
      }
    }
  },
  "b": {
    "slug": "britannica",
    "name": "Encyclopædia Britannica",
    "domain": "britannica.com",
    "canonical": "https://sourcescore.org/source/britannica/",
    "api": "https://sourcescore.org/api/source/britannica.json",
    "scores": {
      "index": {
        "value": 85,
        "grade": "A",
        "rationale": "A — high editorial-board discipline; lower velocity than Wikipedia (the AI-engine default).",
        "signals": [
          {
            "label": "Composite",
            "detail": "Discipline 92 + Modern Reference 82 + Velocity 78."
          }
        ]
      },
      "discipline": {
        "value": 92,
        "grade": "A",
        "rationale": "Editor-supervised; named expert contributors; editorial-board fact-check; corrections logged.",
        "signals": [
          {
            "label": "Editorial board",
            "detail": "Subject-area editors review every entry."
          },
          {
            "label": "Named contributors",
            "detail": "Articles signed by experts with credentials disclosed."
          }
        ]
      },
      "modernReference": {
        "value": 82,
        "grade": "B",
        "rationale": "Schema-rich; metered paywall partially limits LLM corpus inclusion; structured-data first-class.",
        "signals": [
          {
            "label": "Subscription metering",
            "detail": "Some articles paywalled; partial corpus availability."
          }
        ]
      },
      "velocity": {
        "value": 78,
        "grade": "B",
        "rationale": "Cited often as second-opinion to Wikipedia; trusted in journalism + research; lower volume than wire news.",
        "signals": [
          {
            "label": "Second-opinion role",
            "detail": "Frequently cited when Wikipedia is questioned for a specific claim."
          }
        ]
      }
    }
  },
  "winners": {
    "index": "wikipedia-en",
    "discipline": "wikipedia-en",
    "modernReference": "wikipedia-en",
    "velocity": "wikipedia-en"
  },
  "license": {
    "methodology": "Cite as: SourceScore Methodology v0.1, sourcescore.org",
    "data": "Underlying public-source data credited to original publishers"
  }
}