U.S. Treasury Freezes Over $130 Million in Crypto Linked to Iran

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The U.S. Treasury has frozen more than $130 million in cryptocurrency linked to Iran’s central bank, escalating Washington’s campaign against Tehran’s digital-asset infrastructure as sanctions enforcement increasingly moves onchain. Treasury Secretary Scott Bessent said the Office of Foreign Assets Control sanctioned multiple digital-asset wallets tied to Iran’s central bank, blocking more than $130 million in crypto assets. Market reports said the action followed the freezing of four wallets containing about 131 million USDT on the Tron network, underscoring the central role of dollar-pegged stablecoins in both sanctions evasion and sanctions enforcement. The move comes after a broader series of U.S. actions against Iranian crypto networks. In June, OFAC sanctioned four Iran-based digital asset exchanges — Nobitex, Bitpin, Ramzinex and Wallex — and warned that foreign financial institutions and non-U.S. persons could face sanctions exposure for significant transactions with those platforms. Earlier this year, U.S. authorities also linked hundreds of millions of dollars in frozen USDT to Iranian networks. The latest freeze is significant because it targets assets associated with the Central Bank of Iran, rather than only exchange operators or private intermediaries. That suggests Washington is treating crypto rails as a direct extension of Iran’s financial system, especially where stablecoins are used to access dollar liquidity outside conventional banking channels. Stablecoins have become one of the most important tools for cross-border crypto settlement. USDT, in particular, is widely used across offshore exchanges and peer-to-peer markets because it offers dollar exposure, deep liquidity and fast transferability across chains such as Tron and Ethereum. Those same features make stablecoins attractive to sanctioned actors. Iran-linked entities can use stablecoins to move value outside the banking system, settle trade, interact with offshore brokers or preserve access to dollar-denominated liquidity despite restrictions on conventional finance. Blockchain analytics firms have repeatedly identified Iranian exchange flows and IRGC-linked wallets as areas of concern for U.S. investigators. But centralized stablecoins also give regulators an enforcement point. Issuers such as Tether can blacklist addresses and freeze tokens when requested by law enforcement or sanctions authorities. That ability makes stablecoins more controllable than decentralized assets such as Bitcoin, though enforcement still depends on timely identification of addresses and cooperation from issuers, exchanges and analytics firms. The latest action shows that the U.S. is increasingly comfortable using stablecoin freezes as a sanctions tool. Rather than relying only on banks, correspondent accounts or asset seizures through traditional intermediaries, authorities can now target specific blockchain addresses and immobilize token balances directly. For crypto exchanges, brokers and payment firms, the message is clear: Iran-linked wallet exposure is becoming a major compliance risk. OFAC’s June guidance stated that foreign financial institutions and other non-U.S. persons may face sanctions if they materially support or facilitate significant transactions for designated Iranian crypto exchanges. That warning extends the risk beyond U.S.-based platforms. The compliance challenge is especially difficult because stablecoins can move quickly through self-custody wallets, offshore exchanges, OTC desks and cross-chain routes. Platforms must screen not only direct wallet addresses, but also exposure to clusters associated with sanctioned exchanges, money brokers and state-linked entities. The market impact of the $130 million freeze is unlikely to be broad enough to move crypto prices directly. USDT’s total supply remains far larger than the frozen amount, and stablecoin issuers have previously handled large blacklist actions without disrupting the peg. The larger impact is regulatory and geopolitical. Related: U.S. Doubles Estimate of Iranian Crypto Seizures to $1 Billion Washington is signaling that crypto is now firmly inside its sanctions toolkit. For Iran, stablecoins may remain useful for evasion attempts, but large balances can become vulnerable once investigators identify wallet clusters and issuers cooperate. For the crypto industry, the action reinforces a central tension: stablecoins are becoming mainstream financial infrastructure, but that also means they are increasingly expected to behave like regulated dollar instruments. The freeze is therefore more than another enforcement headline. It marks another step in the transformation of stablecoins from lightly supervised crypto liquidity tools into strategic assets in the global sanctions system.

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