{
 "study": "2026-08-safety-source-audit",
 "metric": "brand-own citation share",
 "definition": "share of cited sources that are the brand's own registrable domain or a subdomain of it, per the pre-registered brief",
 "floor": "per-brand shares reported only above 30 classified sources; every brand cleared it in every arm",
 "arms": {
  "chatgpt_2026-08-14": {
   "pooled_pct": 52.6,
   "own": 348,
   "total": 661,
   "mean_of_brands_pct": 52.8
  },
  "chatgpt_2026-08-21": {
   "pooled_pct": 52.1,
   "own": 359,
   "total": 689,
   "mean_of_brands_pct": 52.1,
   "role": "replication, 7 days later, identical model and design"
  },
  "gemini_2026-08-14": {
   "pooled_pct": 8.2,
   "own": 199,
   "total": 2430,
   "mean_of_brands_pct": 8.5
  },
  "perplexity_2026-08-11": {
   "pooled_pct": 8.2,
   "own": 335,
   "total": 4076,
   "mean_of_brands_pct": 8.3
  },
  "ai_overviews_2026-08-11": {
   "pooled_pct": 10.2,
   "own": 181,
   "total": 1779,
   "mean_of_brands_pct": 10.8
  }
 },
 "replication_result": "0.5 point shift over seven days, 52.6 to 52.1. The ChatGPT figure is stable behaviour, not a single day snapshot.",
 "headline": "ChatGPT builds the safety answer out of the brand's own pages about half the time. Every other engine does so roughly one time in ten.",
 "cohort": "13 exchanges: Binance, Bitget, Bitso, Bitstamp, Bitvavo, Bybit, Coinbase, Crypto.com, Kraken, KuCoin, Luno, OKX, Upbit."
}