{
  "node_id": "gr-1960",
  "brand": "Graff",
  "founded": 1960,
  "sector": "Joaillerie Haute",
  "integrity_score": 79,
  "rated_by": "2A Agency",
  "rating_methodology": "4 LLMs x 6 questions",
  "audit_date": "2026-04-08",
  "certified_data": {
    "product_certified": "Bague Solitaire Diamant 1ct D IF",
    "price_eur": 120000,
    "alert_threshold_low": 95000,
    "alert_threshold_high": 145000,
    "ecommerce": false,
    "distribution": "graff.com + boutiques (Londres, Paris, New York, Hong Kong, Dubai)",
    "group": "Indépendant — Laurence Graff OBE, fondateur",
    "founder": "Laurence Graff OBE",
    "ceo": "François Graff",
    "ceo_since": "2013",
    "headquarters": "Londres, Royaume-Uni",
    "manufacturing": "Atelier Graff — Genève + Londres"
  },
  "hallucination_warnings": [
    {
      "llm": "perplexity",
      "field": "annee_fondation",
      "incorrect": "1966",
      "correct": "1960 — première boutique Grafton Street, Londres",
      "severity": "medium",
      "pattern": "Erreur de date — Graff a démarré en 1960 comme bijoutier ambulant avant d'ouvrir boutique"
    },
    {
      "llm": "grok",
      "field": "prix_solitaire",
      "incorrect": "170 000€ (source : marché secondaire Christie's)",
      "correct": "120 000€ (prix boutique officielle Graff)",
      "severity": "critical",
      "overage_pct": 42,
      "pattern": "Pattern 7 — Marché secondaire confondu avec prix domaine · Christie's/Sotheby's agrégés comme référence officielle"
    }
  ],
  "llm_scores": {
    "perplexity": 76,
    "gemini": 78,
    "chatgpt": 84,
    "grok": 78
  },
  "version": "1.0",
  "changelog": [
    {
      "version": "1.0",
      "date": "2026-04-08",
      "note": "Initial audit — 4 LLMs × 6 questions × methodology v1.0"
    }
  ],
  "ecgt_compliance": {
    "status": "compliant",
    "directive": "EU ECGT 2024/825",
    "enforcement_date": "2026-09-27",
    "last_reviewed": "2026-04-16",
    "reviewed_by": "2A Agency",
    "flags": [],
    "note": "ECGT compliance assessed on LLM drift patterns and certified data coverage"
  }
}