Circle's USYC, a tokenized U.S. Treasury money market fund, has expanded to the Solana blockchain, becoming the fifth largest asset in the rapidly growing $8 billion tokenized treasury sector. USYC offers real-time redemption into USDC and serves as margin collateral and a yield-bearing asset in DeFi, targeting non-U.S. institutional investors passing KYC. Bitlet.app users can benefit from integrating USYC via its secure cryptocurrency services.