Tether, the issuer of the widely used USDT stablecoin, and its affiliated exchange Bitfinex have been identified as the previously unnamed cryptocurrency firms involved in a major US forfeiture case targeting Capstone Ltd, according to sources cited by the Financial Times. Federal prosecutors in California froze roughly $84.2 million associated with Capstone Ltd, alleging the payments company facilitated financial transactions without a proper license. Legal filings reveal that Capstone’s account with Wells Fargo reportedly disbursed $337 million between March and December 2025, excluding Treasury purchases.