The U.S. Treasury's Office of Foreign Assets Control (OFAC) issued a warning on May 1, stating that digital asset payments related to transit through the Strait of Hormuz could expose parties to sanctions risk. OFAC made clear that using cryptocurrency does not reduce legal exposure for maritime companies, financial institutions, insurers, or counterparties. The advisory noted that demands linked to Iran for safe passage may appear in various forms, including fiat currency, digital assets, offsets, informal exchanges, or in-kind payments such as nominal charitable donations to the Iranian Red Crescent Society, Bonyad Mostazafan, or Iranian embassy accounts.
Iran's Crypto Toll System Exposed
Simultaneously, Iran is actively accepting cryptocurrency under a formal 'Tehran Toll Booth' regime for transit through the Strait of Hormuz, codified on March 31, 2026, and still in active use. Bitcoin is the primary payment method, with reported USDT usage, although Tether froze over $344 million in Iran-linked assets in late April. Fees for oil tankers range from $0.50 to $1.00 per barrel, or roughly $2 million per very large crude carrier (VLCC). OFAC also warned that U.S. persons are generally prohibited from transactions involving Iran's government unless exempt or authorized, including dealings with the Islamic Revolutionary Guard Corps (IRGC). Digital asset exchanges in Iran are treated as blocked Iranian financial institutions under U.S. sanctions, making any engagement a sanctions risk.
Enforcement Pressure and Secondary Sanctions
TRM Labs estimates the IRGC's daily revenue from this system at approximately $20 million. OFAC stated that non-U.S. persons may also face penalties for transactions involving Iran's government or IRGC. Secondary sanctions can restrict access to the U.S. financial system. Even indirect involvement can create liability if a transaction passes through U.S.-linked insurers, banks, or financial intermediaries. OFAC urged companies to review vessels, identify who arranged transit, and determine whether any Iran-related fees were paid or promised. Under the IRGC system, ships must submit ownership and cargo details via intermediaries before approval. Payments are then sent to designated wallets via a 'conversion window' on Qeshm Island, followed by a VHF-issued passcode and naval escort. This process makes verifying wallet addresses and counterparties critical for compliance.
Two separate developments in late April highlighted the risks. On April 21, reports said IRGC fired on a vessel after it paid a fake crypto wallet instead of an authorized address. On April 30, Treasury Secretary Scott Bessent announced that Operation Economic Fury had seized $500 million in Iranian crypto assets. These events show digital assets are central to both payment activity and enforcement actions.
UAE Leaves OPEC, Bitcoin Falls Below $76K
Meanwhile, the United Arab Emirates left OPEC on May 1 after 59 years, triggering a supply shock in oil markets. Bitcoin fell below $76,000 as traders assessed geopolitical risks. The combination of Iran's crypto toll system and the UAE's departure amplified uncertainty. Analysts note that the legal risk of digital asset payments in sanctioned environments is now clearer than ever, and the crypto market is reacting to both regulatory and geopolitical pressures. Bitcoin's short-term outlook remains bearish amid these headwinds.