The U.S. Treasury Department has expanded its sanctions campaign against Iran to include digital assets, pairing newly listed crypto addresses with threatened secondary sanctions that could place foreign firms dealing with designated wallets at risk of U.S. penalties.
Treasury Secretary Scott Bessent presented the measures as part of what he called an “economic D-Day” during a press conference on Monday. The package also targets Iran-linked activity involving technology, aviation, gold and shipping, extending pressure beyond the oil exports and maritime networks that have been central to earlier U.S. actions.
Bessent said the administration plans to use secondary sanctions to widen the reach of the restrictions. Such measures can target non-U.S. companies that continue business with sanctioned actors, potentially exposing banks, payment providers, trading platforms and other intermediaries to restrictions on their access to the U.S. financial system.
He said each country involved had been given “a defined timeline to shut down activities we have identified,” though the Treasury announcement cited at the briefing did not publish the timelines or specify which jurisdictions had received them.
Crypto addresses added to sanctions list
The Treasury’s latest action adds several digital asset addresses to the U.S. sanctions list, making transactions involving those wallets a compliance issue for U.S. persons and businesses. The listings also give blockchain-monitoring firms and financial institutions new identifiers to screen against their transaction records.
Among the names cited by Treasury was Arman Kahzadian, whom the department said gained control of a wallet holding more than $30,000 in Bitcoin in 2023. Treasury did not present the wallet’s value as a measure of the broader Iranian crypto economy, but the designation shows the government is continuing to pursue individual wallets alongside companies and conventional financial networks.
The approach reflects a practical feature of sanctions enforcement in digital asset markets: wallets can be publicly visible on a blockchain, but tracing their ownership and following funds through swaps, bridges, intermediaries or self-hosted addresses can require extensive analysis. A listed address does not prevent a transfer from being broadcast on-chain. It does, though, create legal and operational barriers for regulated businesses that identify it.
Foreign firms are likely to face sharper decisions where they touch the U.S. financial system, serve U.S. customers or rely on dollar-based banking relationships. Secondary-sanctions language raises the potential cost of maintaining exposure to entities and wallets connected to the newly targeted Iranian networks.
Nobitex remains central to the U.S. case
The action follows a June U.S. sanctions designation against Nobitex, which authorities described as Iran’s largest crypto exchange. U.S. officials said at the time that the platform had been involved in sanctions evasion, terrorist financing and transactions linked to Iran’s Islamic Revolutionary Guard Corps.
Nobitex’s designation put one of Iran’s best-known domestic crypto venues at the center of Washington’s enforcement campaign. Exchanges can provide a bridge between local currency, stablecoins and more liquid crypto assets, making them valuable infrastructure for ordinary users as well as for actors trying to move funds outside traditional banking channels.
Bessent said in May that the United States had seized almost $1 billion in cryptocurrency connected to Iran. The Treasury Department’s new wallet designations suggest that enforcement is focused not only on large platforms but also on the individual addresses, facilitators and transaction routes that can remain active after a service is sanctioned.
The Treasury has already used sanctions against Iranian oil revenue and shipping networks, sectors that remain critical to the country’s access to foreign currency. Adding digital assets, gold, aviation and technology to the same campaign would give U.S. authorities more ways to target the commercial infrastructure surrounding sanctioned entities.
Secondary sanctions increase pressure on intermediaries
Bessent said Treasury, the State Department and the military are meeting global stakeholders as the policy is rolled out. That coordination indicates that the administration is seeking enforcement beyond direct U.S. jurisdiction, particularly in areas where Iranian-linked trade depends on foreign logistics providers, technology suppliers, financial intermediaries and regional business networks.
For crypto businesses, the immediate operational effect is likely to fall on screening and transaction-monitoring processes. Platforms that custody customer assets or process withdrawals commonly use blockchain analytics tools to identify exposure to sanctioned addresses. New listings require those systems to be updated and may prompt reviews of past transfers, linked accounts and indirect exposure through intermediary wallets.
The burden will be particularly acute for services offering rapid conversion between crypto and fiat currency. Those businesses sit at the point where blockchain activity intersects with banks, payment networks and customer-identification obligations. A platform that misses exposure to a designated address could face frozen funds, account closures or regulatory scrutiny, depending on the jurisdictions in which it operates.
Self-custodied wallets present a more complicated enforcement challenge. Users can retain control of assets without using a centralized intermediary, but access to regulated exchanges, stablecoin issuers, payment providers and banking channels can become limited once a sanctioned connection is identified.
Pressure campaign expands during conflict
The measures arrive amid the continuing U.S.-Iran conflict that began last year and included strikes that killed Ayatollah Ali Khamenei, Iran’s Supreme Leader, according to the account presented in the source material. Washington’s sanctions strategy now combines conventional trade restrictions with more targeted action against digital financial infrastructure.
Treasury’s decision to pair wallet listings with a warning about secondary sanctions places compliance pressure on the broader network around Iranian crypto activity rather than only on the designated parties themselves. The effectiveness of that strategy will depend heavily on whether overseas exchanges, banks and technology providers treat the new designations as a material risk to their own access to U.S.-linked financial services.
Concerned about crypto under sanctions? Understand digital asset rules and safeguards in this detailed guide.
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