{
  "schema": 1,
  "primary_assets": ["BTCUSDT", "GLD", "QQQ"],
  "supplementary_assets": ["ETHUSDT"],
  "assets": [
    {"symbol":"BTCUSDT","label":"Bitcoin · BTC / USDT","role":"primary","summary":"leaderboard-summary.json","full":"leaderboard.json","currency":"USDT","annualization_sessions":365,"instrument":"Bitcoin spot","identity_source":"https://data.binance.vision/"},
    {"symbol":"GLD","label":"Gold · GLD ETF proxy","role":"primary","summary":"leaderboard-GLD-summary.json","full":"leaderboard-GLD.json","currency":"USD","annualization_sessions":252,"instrument":"SPDR Gold Shares, a traded gold proxy; not spot bullion","identity_source":"https://www.spdrgoldshares.com/media/GLD/file/ETF-GLD__20250331.pdf"},
    {"symbol":"QQQ","label":"Nasdaq-100 · QQQ ETF proxy","role":"primary","summary":"leaderboard-QQQ-summary.json","full":"leaderboard-QQQ.json","currency":"USD","annualization_sessions":252,"instrument":"Invesco QQQ ETF, a Nasdaq-100 proxy; not the index itself","identity_source":"https://www.invesco.com/us/en/financial-products/etfs/invesco-qqq-trust-series-1.html"},
    {"symbol":"ETHUSDT","label":"Ethereum · supplementary","role":"supplementary","summary":"leaderboard-ETHUSDT-summary.json","full":"leaderboard-ETHUSDT.json","currency":"USDT","annualization_sessions":365,"instrument":"Ethereum spot","identity_source":"https://data.binance.vision/"}
  ],
  "comparison_note":"Rank each asset separately. ETF USD and crypto USDT are not FX-normalized. ETFs use actual trading sessions, 252-session Sharpe and calendar-day CAGR; crypto uses 365 sessions. ETF raw prices include explicit accrued/paid cash distributions, not reinvested. Gold and Nasdaq are represented by GLD and QQQ respectively."
}