According to official announcements, in order to prevent market risks and provide users with a good trading experience. OKX will offline perpetual contract trading pairs NCUSDT, SLERFUSDT, KNCUSDT, and ALPHAUSDT on July 4, 2025 at 4:00 PM (UTC+8). Meanwhile, OKX will gradually discontinue leveraged trading pairs such as STETH/USDT, SLERF/USDT, KNC/USDT, PRCL/USDT, BCH/BTC, LTC/BTC, etc. from July 3 to 4, 2025. Details Announcement: https://www.okx.com/zh-hans/help/okx-to-delist-several-margin-trading-pairs-and-perpetual-futures-20250630