CoinDesk
The U.S. Treasury Department said Friday that a $344 million cryptocurrency freeze is part of its latest effort to disrupt financial networks tied to Iran, marking one of the largest on-chain freezes of USDT directly tied to a sanctioned regime. Treasury Secretary Scott Bessent said in an X post that OFAC is sanctioning multiple crypto wallets linked to Iran, with the freeze covering $344 million in digital assets. "We will follow the money that Tehran is desperately attempting to move outside of the country and target all financial lifelines tied to the regime," Bessent said, framing the effort as part of a broader campaign dubbed "Economic Fury."
The action followed Thursday's move by stablecoin issuer Tether, which blacklisted two Tron blockchain addresses holding $344 million in USDT altogether. A U.S. official told CoinDesk the sanctioned wallets showed material links to the Iranian regime, including transactions with Iranian exchanges and routing through intermediary addresses connected to wallets associated with the Central Bank of Iran. The Treasury said Iran's central bank has been leaning into digital assets to try to mask its cross-border transactions, using more complex patterns to obscure involvement under sanctions pressure.
Why it matters
The sequence matters: Tether's blacklist preceded OFAC's designations by roughly a day, meaning a private stablecoin issuer executed the on-chain freeze before the U.S. government's public sanctions action. That order-of-operations is now a working template — Treasury coordinates with blockchain analytics and stablecoin issuers, the issuer burns or freezes the tokens, and OFAC formally designates the wallets. The Treasury said it continues to work with blockchain analytics firms and coordinate with crypto exchanges as it tracks illicit flows tied to sanctioned entities.
Market impact
The action landed on Tron, where USDT's supply is concentrated, and against addresses that routed through Iranian exchange counterparties and Central Bank of Iran-linked wallets — the pattern Treasury has been documenting for two years.
Frequently asked questions
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Why did the U.S. Treasury freeze $344 million in crypto tied to Iran?
Treasury said the freeze is part of a broader campaign dubbed 'Economic Fury' aimed at cutting off financial lifelines to the Iranian regime. OFAC sanctioned multiple crypto wallets showing material links to Iran, including routing through wallets associated with the Central Bank of Iran.
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What role did Tether play in the $344 million USDT freeze?
Tether blacklisted two Tron blockchain addresses holding $344 million in USDT on Thursday, roughly a day before OFAC formally designated the wallets on Friday. The sequence means a private stablecoin issuer executed the on-chain freeze before the U.S. government's public sanctions action.
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Which blockchain held the frozen USDT and why does that matter?
The frozen USDT sat on Tron, where Tether's USDT supply is heavily concentrated. Targeting Tron-based USDT directly cuts off the dominant rail Iran-aligned actors were using for cross-border settlement under sanctions pressure.
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How is Iran using crypto to bypass U.S. sanctions?
According to the Treasury Department, Iran's central bank has been leaning into digital assets to mask cross-border transactions, using more complex routing patterns through intermediary addresses and Iranian exchanges to obscure involvement in sanctioned trade flows.
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What other sanctions did the U.S. announce alongside the crypto freeze?
Treasury also sanctioned Hengli Petrochemical (Dalian) Refinery Co. on Friday, accusing the China-based independent refinery of playing a major role in Iran's oil economy — signaling that crypto and traditional finance enforcement are now running on parallel tracks.
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