The U.S. Office of Foreign Assets Control sanctioned Nobitex, Iran's dominant retail cryptocurrency exchange, on Monday alongside three smaller platforms: Wallex, Bitpin, and Ramzinex. Four individuals connected to Nobitex were also added to the Specially Designated Nationals list. These include the exchange's current CEO, Seyed Ali Khoee, as well as two co-founders, the Aghamir Mohammad Ali brothers, who are identified as members of the Kharrazi family, a clan within Iranian Supreme Leader Ali Khamenei's inner circle.

The action represents one of the most sweeping U.S. enforcement moves yet against Iran's digital asset infrastructure and extends financial pressure to exchange operators personally, not just the platforms themselves.

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Scale of the Target

Nobitex, founded in Tehran in 2017, holds more than 11 million registered accounts and processed over half of all Iranian digital asset inflows in 2025, according to OFAC and blockchain analytics firm Elliptic. Wallex accounted for 12% of those inflows, and Bitpin handled 10%. Ramzinex processed $2.45 billion in total transactions, per OFAC figures.

Iran's broader on-chain crypto ecosystem reached $7.78 billion in 2025, per Chainalysis, with IRGC-linked addresses accounting for more than 50% of all value received by Iranian crypto services in the final quarter of that year alone. A Reuters investigation published May 1 found that wallets linked to Iran's Central Bank sent approximately $347 million to Nobitex in the first half of 2025, with funds routed through stablecoin bridges and DeFi protocols before re-entering the domestic ecosystem.

Elliptic's on-chain analysis found wallet connections between Nobitex and Garantex, a Russian exchange previously sanctioned for ransomware laundering, as well as addresses linked to Hamas, North Korean hacking groups, and Syria-based financial actors. Elliptic stated in its findings: "Elliptic has observed wallet behaviors and structural patterns at Nobitex that bear similarities to activity previously linked to IRGC-affiliated networks."

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Personal Liability for Exchange Founders

The designation of four named individuals signals a deliberate shift in enforcement posture. OFAC specifically named Amir Hossein Rad, the exchange's co-founder and former CEO, for his role in rebuilding Nobitex's operations after a June 2025 hack that cost the exchange more than $90 million. That attack was attributed to Predatory Sparrow, a group with reported ties to Israel. The fact that U.S. regulators tracked the post-hack reconstitution effort and named it in the designation paperwork suggests a sustained, close-focus intelligence effort on exchange leadership.

Alongside the designations, the State Department announced a $15 million Rewards for Justice bounty.

That program has historically targeted ransomware operators and terrorist financiers. Its application to crypto exchange founders sets a precedent with implications well beyond Iran.

Treasury Secretary Scott Bessent framed the action within the administration's broader "Economic Fury" campaign. "Treasury will continue to follow the money," Bessent said in the official press release, "whether it is through the banking system or digital assets." The U.S. government has seized more than $1 billion in Iranian crypto assets as of May 30, Bessent confirmed publicly two days before Monday's designations.

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Secondary Sanctions Create Global Compliance Exposure

The legal mechanism behind Monday's action, drawn from Executive Orders 13224 and 13902, carries secondary sanctions language. Any financial institution anywhere in the world that transacts with Nobitex, Wallex, Bitpin, or Ramzinex now faces its own risk of U.S. designation. That reach extends to exchanges, payment processors, and peer-to-peer platforms in jurisdictions with no direct U.S. presence.

For users and platforms in South Asia, the exposure is concrete. Pakistan, India, and Bangladesh all have active P2P crypto markets where USDT on the TRON blockchain (USDT-TRC20) is the dominant informal digital dollar. A May 2026 FinCEN alert on IRGC financial activity explicitly flagged South and Southeast Asian intermediaries as pass-through jurisdictions for Iranian funds. Exchanges in those markets that lack robust OFAC SDN screening for Iranian-origin wallet addresses now face potential correspondent banking consequences, even when their exposure is indirect, routed through decentralized exchange bridges or stablecoin pools.

In Sub-Saharan Africa, where USDT and Bitcoin volumes have grown sharply amid local currency instability, traders using global platforms such as Binance, KuCoin, and OKX may encounter tightened re-verification requirements as those exchanges update their SDN lists.

Nigeria's Central Bank (CBN) and its Securities and Exchange Commission, Kenya's CMA, and South Africa's FSCA have each recently strengthened crypto anti-money-laundering rules; Monday's action gives those regulators concrete documented cases to cite when demanding SDN compliance from licensed platforms.

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Tether as Enforcement Infrastructure

The broader campaign has demonstrated that stablecoin issuers now function as active compliance actors. In April 2026, Tether froze $344.2 million in USDT across two wallets linked to Iran's Central Bank and the IRGC-Qods Force, acting on OFAC intelligence. For DeFi developers building cross-border payment rails on USDT, particularly in emerging markets, that action is a standing reminder: any wallet holding Tether can be frozen at any time, globally.

The January 2026 designation of UK-registered exchanges Zedcex and Zedxion, the first-ever OFAC action against IRGC-linked exchange infrastructure, now reads as a precursor to Monday's far larger move. With a $15 million open bounty, a $1 billion seizure record, and four named exchange officials now on the SDN list, the U.S. enforcement posture on Iranian crypto has shifted from reactive to systematic.