U.S. Freezes $131 Million In Iran-Linked Crypto Wallets
On Tuesday, the U.S. Treasury's Office of Foreign Assets Control sanctioned multiple cryptocurrency wallets tied to Iran's Central Bank and the Islamic Revolutionary Guard Corps, with stablecoin issuer Tether freezing over $131 million across four addresses on the Tron blockchain. Treasury Secretary Scott Bessent confirmed the move on X, vowing the U.S. would "aggressively follow the money and deny the Iranian regime access" to illicit funds. Separately, the Treasury sanctioned seven individuals linked to a global weapons procurement network for the Iranian armed forces and IRGC, including a Tehran-based drone parts supplier, a Nigerian intermediary, and Russian nationals tied to a Moscow aviation company. The action is the latest in a campaign branded Operation Economic Fury.
On Tuesday, the U.S. Treasury's Office of Foreign Assets Control sanctioned multiple cryptocurrency wallets tied to Iran's Central Bank and the Islamic Revolutionary Guard Corps, with stablecoin issuer Tether freezing over $131 million across four addresses on the Tron blockchain. Treasury Secretary Scott Bessent confirmed the move on X, vowing the U.S. would "aggressively follow the money and deny the Iranian regime access" to illicit funds. Separately, the Treasury sanctioned seven individuals linked to a global weapons procurement network for the Iranian armed forces and IRGC, including a Tehran-based drone parts supplier, a Nigerian intermediary, and Russian nationals tied to a Moscow aviation company. The action is the latest in a campaign branded Operation Economic Fury.
Background
Iran has spent years building a crypto infrastructure to circumvent sanctions, according to the source. The country legalized Bitcoin mining in 2019 and turned to USDT to stabilize a rial in freefall and settle international trade. USDT, a digital token issued by Tether pegged one-to-one to the U.S. dollar, runs on blockchains like Ethereum and Tron, outside the banking system Iran has been largely cut off from for years. Because Tether issues the token, it retains the ability to freeze specific wallet addresses at the software level, rendering the funds immovable. Blockchain analytics firm Chainalysis tracked nearly $8 billion in attributed Iranian crypto volume in 2026, while TRM argues it is almost $10 billion, with IRGC-associated addresses accounting for more than half of the country's inflows in the final quarter of that year. The freeze is part of a broader U.S. campaign. In April, Tether froze $344 million in USDT across two other Tron addresses tied to Iran's central bank. By May, Bessent said the U.S. had seized roughly $1 billion in Iranian crypto total since the campaign began. In June, the Treasury sanctioned Iran's four largest exchanges, including Nobitex, which alone processed more than half of the country's digital asset volume in 2025. Tether says it now works with more than 340 law enforcement agencies across 65 countries and has frozen more than $4.4 billion in assets since it began coordinating with authorities, including more than $2.1 billion tied to US enforcement actions.
What happened
The U.S. Treasury's Office of Foreign Assets Control sanctioned multiple cryptocurrency wallets tied to Iran's Central Bank and the Islamic Revolutionary Guard Corps on Tuesday, according to decrypt. As part of that action, stablecoin issuer Tether froze over $131 million across four addresses on the Tron blockchain. Treasury Secretary Scott Bessent confirmed the move in a post on X, vowing the U.S. would "aggressively follow the money and deny the Iranian regime access" to illicit funds. In the same announcement, the Treasury sanctioned seven individuals linked to a global weapons procurement network for the Iranian armed forces and IRGC, including a Tehran-based drone parts supplier, a Nigerian intermediary, and Russian nationals tied to a Moscow aviation company. The freeze is the latest move in a campaign branded Operation Economic Fury. In April, Tether froze $344 million in USDT across two other Tron addresses tied to Iran's central bank. By May, Bessent said the U.S. had seized roughly $1 billion in Iranian crypto total since the campaign began. In June, the Treasury sanctioned Iran's four largest exchanges, including Nobitex, which alone processed more than half of the country's digital asset volume in 2025. Tether says it now works with more than 340 law enforcement agencies across 65 countries and has frozen more than $4.4 billion in assets since it began coordinating with authorities, including more than $2.1 billion tied to US enforcement actions.
Market impact
The sources do not provide price data for any cryptocurrency, nor do they quantify the immediate market reaction to the freeze. The only figures present are the amounts frozen and the volumes attributed to Iran. Tether froze over $131 million across four addresses on the Tron blockchain in this action. In April, Tether froze $344 million in USDT across two other Tron addresses tied to Iran's central bank. By May, Bessent said the U.S. had seized roughly $1 billion in Iranian crypto total since the campaign began. Chainalysis tracked nearly $8 billion in attributed Iranian crypto volume in 2026, while TRM argues it is almost $10 billion, with IRGC-associated addresses accounting for more than half of the country's inflows in the final quarter of that year. Nobitex alone processed more than half of the country's digital asset volume in 2025. Tether says it has frozen more than $4.4 billion in assets since it began coordinating with authorities, including more than $2.1 billion tied to US enforcement actions. No exchange prices, trading volumes, or flow data beyond these figures are given.
Why it matters
The freeze demonstrates that blockchain is what makes this enforcement possible, and what makes Iran's crypto workaround less safe than it looks, according to the source. Transactions on public networks like Tron are permanently visible, and U.S. agencies work alongside analytics firms to trace how money moves. The more centralized a blockchain or crypto solution is, the more prone it is to being censored. TRM Labs' Ari Redford told Bloomberg in April that law enforcement can "track and trace the flow of funds to build cases—and potentially seize them" when actors try to cash out at regulated exchanges, which must comply with US rules. He described it as "this cat and mouse game between the IRGC financial facilitators and National Security (Agencies) to try to stop Iran from offraping." The action also targets a weapons procurement network, with seven individuals sanctioned, including a Tehran-based drone parts supplier, a Nigerian intermediary, and Russian nationals tied to a Moscow aviation company. The campaign has already seen $344 million frozen in April and roughly $1 billion seized by May, and the June sanctions on Iran's four largest exchanges, including Nobitex.
DeFi Intel’s take
Editorial analysis, not a statement of fact.
DeFi Intel's take: The freeze suggests that the centralization of stablecoins like USDT is a double-edged sword for sanctions evasion. Iran turned to USDT because it sits outside the banking system, but Tether's ability to freeze addresses at the software level means those funds are only as safe as the issuer's compliance posture. We read this as a signal that public blockchains, while attractive for circumvention, are also highly traceable, and that U.S. enforcement is increasingly able to follow the money. The cat-and-mouse dynamic described by TRM Labs is likely to continue, with Iran potentially seeking more decentralized or privacy-focused tools. However, the sources do not indicate any shift in that direction, so this remains speculation. The repeated freezes, including $344 million in April and over $131 million now, suggest a sustained campaign that could raise the cost of using crypto for sanctioned actors. We note that the sources disagree on the scale of Iran's crypto volume, with Chainalysis at nearly $8 billion and TRM at almost $10 billion, which underscores the difficulty of measurement.
Sources used for this analysis
DeFi Intel wrote this analysis from the reporting above. Any figure or quotation can be checked against those pages.
Frequently asked questions
How much did Tether freeze and on which blockchain?
Tether froze over $131 million across four addresses on the Tron blockchain, according to decrypt. The freeze was part of a U.S. Treasury Office of Foreign Assets Control action sanctioning wallets tied to Iran's Central Bank and the Islamic Revolutionary Guard Corps. Treasury Secretary Scott Bessent confirmed the move on X, vowing to deny the Iranian regime access to illicit funds.
What is Operation Economic Fury and what actions has it included?
Operation Economic Fury is a U.S. campaign targeting Iranian crypto. In April, Tether froze $344 million in USDT across two Tron addresses tied to Iran's central bank. By May, Bessent said the U.S. had seized roughly $1 billion in Iranian crypto total since the campaign began. In June, the Treasury sanctioned Iran's four largest exchanges, including Nobitex, which processed more than half of the country's digital asset volume in 2025.
How much Iranian crypto volume did Chainalysis and TRM attribute in 2026?
Chainalysis tracked nearly $8 billion in attributed Iranian crypto volume in 2026, while TRM argues it is almost $10 billion, according to the source. The sources disagree on the figure. IRGC-associated addresses accounted for more than half of the country's inflows in the final quarter of that year, per the source. These figures provide context for the scale of Iran's crypto activity.
DeFi Intel is an entity-graph aggregator: we curate, tag and link crypto news to a typed knowledge graph of protocols, tokens, people and incidents. We do not republish the full article body. Use the link above to read the original report at Gnews_tether_usdt.
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