Entrepreneur Justin Sun filed a lawsuit on Wednesday accusing a Trump family-backed cryptocurrency platform of fraud and alleging he was blocked from withdrawing his assets.

In a San Francisco federal court filing reviewed by Agence France-Presse, the Chinese-born crypto billionaire and former Trump ally claims to have bought US$45 million worth of WLFI, an electronic currency launched by World Liberty Financial in October 2024.

To thank him for the investment – at a time when WLFI was generating little initial interest – World Liberty Financial executives appointed him as an adviser and awarded him an additional 1 billion WLFI tokens, the lawsuit says.

Sales to investors subsequently accelerated, and in March 2025, World Liberty…