To support the development of the USDⓈ ecosystem and meet users' diverse trading needs, OKX now offers brand-new USDⓈ-margined contracts. Users can choose USDC or USDG as the settlement currency for USDⓈ-margined contracts based on their preferences. We use XXX/USD UM to represent USDⓈ-margined contracts. Currently, BTC/USD UM and ETH/USD UM are officially live for trading. To unify the trading experience, OKX will delist USDC-margined perpetual contracts at 16:00 (UTC+8) on December 11. You can manually close related positions before the delisting and switch to trading USDⓈ-margined contracts. For more details, check the comments section.