Tether said its U.S.-focused stablecoin USAT increased nearly 540% month over month, rising from about 22 million tokens in March to more than 140 million in April, according to a Thursday attestation. Total reserves reached $141,178,400, leaving a reported surplus of $327,450 over outstanding redeemable tokens. The report says USAT launched in January as Tether’s effort to operate within the U.S. regulatory perimeter and to align with GENIUS Act-style requirements for 1:1 backing with cash or high-quality liquid assets. USAT is issued by Anchorage Digital Bank, which is regulated by the OCC, and its reserves consist of $13,427,400 in cash and $127,751,000 in reverse repurchase agreements backed by U.S. Treasury securities and held in segregated fiduciary trust accounts. Tether CEO Paolo Ardoino said the figures show accelerating adoption of regulated digital dollars as U.S. stablecoin rules become clearer.