The United States has added four cryptocurrency wallets linked to the Central Bank of Iran to its sanctions list following the breakdown of a ceasefire agreement between the two nations. These Tron-blockchain wallets reportedly received over $165 million in stablecoins, as per Chainalysis data. In response, Tether has frozen $131 million in USDT held by these accounts, although some funds were moved prior to the freeze. The U.S. Treasury Department's Office of Foreign Assets Control (OFAC) clarified that the published wallet lists are not exhaustive, suggesting other addresses may still be considered blocked property. This action builds on existing sanctions against Iran's central bank, which has been under U.S. counterterrorism sanctions since 2019 due to its alleged support for the Islamic Revolutionary Guard Corps-Qods Force and Hezbollah.