​
Price Quotation

Prices are quoted in BTC per unit of the underlying. For example, if gold is trading around 3,000andBTCaround3,000 and BTC around 100,000, the GOLD/BTC contract might trade near 0.03 BTC. The minimum price increment (tick size) is set to a small fraction of BTC (e.g. 0.01 BTC) to allow fine price granularity.

​
Index Calculation

Each contract’s Mark Price is derived from a composite index that blends a high-quality price feed of the underlying asset with a robust BTC/USDT price feed:
  • The base asset’s price is sourced from reliable markets (via Databento, with Pyth Network as a backup).
  • The BTC/USDT price is calculated as a volume-weighted average across top exchanges (e.g. Binance, Bybit, OKX).
  • To guard against outliers, any exchange feed that deviates >5% from the median is temporarily excluded until it comes back within 3% of the median for at least 5 minutes. By blending multiple sources and applying strict price-protection rules, the Mark Price reflects a broad market consensus and resists distortion from bad data or manipulation.