bitcastle is a cryptocurrency exchange operated by Bitcastle LLC, incorporated in St. Vincent and the Grenadines. The company's mission is to be the world's fastest crypto asset exchange, leveraging a proprietary high-speed matching engine. It provides a range of trading services, including spot trading, perpetual futures, and a unique binary options-style feature called "High & Low". The platform supports multiple languages and focuses on providing a secure and user-friendly experience for traders worldwide.