UPDATE: The $344M USDT freeze appears tied to Iran.A U.S. official has told CNN the funds were linked to Iranian entities.CoinDesk (@CoinDesk):NEW: Tether says it has frozen over $344 million in USDT, its largest ever asset freeze, in coordination with Office of Foreign Assets Control and U.S. law enforcement.The action targets funds linked to illicit activity, reinforcing Tether’s cooperation with regulators. https://t.co/4FujT68NgC ...