OIL-BTC - Roxom API

Contract Code	`OIL-PERP`
Underlying Index Price	WTI Light Sweet Crude Oil composite index • BTC Price: 3-venue 4-hour V-WAP spot composite of Binance (BTC/USDT); Bybit (BTC/USDT); Coinbase (BTC/USD).
Contract Size	Notional of 10 × WTI crude oil composite price, quoted & settled in BTC
Quote / P&L Currency	BTC
Tick Size	0.01
Trading Hours	24 / 7 continuous order book.
Underlying Cash‑Market Hours	Sunday – Friday • CME Globex: 18:00 – 17:00 ET (next day) with a 60-minute break each day at 17:00 ET (closed on U.S. market holidays).
Mark-Price Construction	Mark Price = median(P¹, P², P³), Where: Price 1 (P¹) = Index Price × 1+LastFundingRate×(TimeUntilFunding/8) Price 2 (P²) = Index Price plus a rolling 2.5-minute average basis, where the basis is defined as (Bid1 + Ask1)/2 − Index Price. Price 3 (P³) = Last traded price.
Price Formation when the underlying oil market is closed	• Oil leg (WTI): When CME Globex is closed, the oil-leg reference is frozen at the last official WTI settlement price. • BTC leg: The BTC component continues to update in real time using our 3-venue 4-hour VWAP composite (Binance BTC/USDT, Bybit BTC/USDT, Coinbase BTC/USD). • Mark Price: mark price is calculated in the same way as during normal trading hours, where each P is computed with the static WTI close and the live BTC composite.
Funding Snapshots	00:00 UTC • 08:00 UTC • 16:00 UTC (every 8 h)
Funding-Rate Formula	Premium Index + Interest Rate; Interest Rate = 0.03% / day (0.01% / 8 h). Caps ± 3 % per 8 h.
Leverage & Margin	Max Leverage 10x; Maintenance margin 25% of Initial Margin.
Liquidation Logic	• Trigger when Equity < MM. • For long positions = Entry Price × (1−Initial Margin Rate + Maintenance Margin Rate) • For short positions = Entry Price × (1 + Initial Margin Rate - Maintenance Margin Rate)
Order Types / TIF	Limit, Market, GTC, GTD, IOC.
Min / Max Order Sizes	Market Max: 0.5 BTC Limit Max: 0.5 BTC

Last modified on March 28, 2026

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