The U.S. Department of the Treasury’s Office of Foreign Assets Control designated Nobitex, Iran’s largest digital asset exchange, and three other Iranian crypto platforms on Tuesday, marking the Trump administration’s sharpest blow yet to Tehran’s digital financial infrastructure.

Nobitex processed more than 50% of all Iranian digital asset inflows in 2025, according to OFAC, and has served as a conduit for payments tied to Iran’s Islamic Revolutionary Guard Corps, ransomware operations, and attempts to shield regime wealth during internet blackouts that followed U.S. combat operations in Iran, according to the Treasury release.

Treasury Secretary Scott Bessent, in announcing the action, pointed to Iran’s economic…