Treasury Sanctions Dubai Crypto Exchange Shelbit Over Alleged $6.3 Billion in Iran-Linked Transactions

The Treasury Department's Office of Foreign Assets Control sanctioned two cryptocurrency exchanges on Friday, August 7: Shelbit, an unlicensed platform registered in Dubai, and Aban Tether, based inside Iran. Both stand accused of moving money for Iran's Islamic Revolutionary Guard Corps.

This marks the fourth distinct round of crypto-specific Iran sanctions in 2026, according to Blockhead, which has tracked the campaign since Treasury first designated the exchanges Zedcex and Zedxion in January. OFAC blacklisted Nobitex, Iran's largest exchange, in June. In July, Treasury moved against four wallets tied to Iran's central bank, prompting Tether to freeze roughly $131 million held in those wallets.

What Treasury alleges

OFAC's numbers on Shelbit are specific. IRGC-linked wallets sent more than $1 million in crypto to Shelbit addresses, and more than $2 million flowed back, according to Blockhead and Incrypted, both citing Treasury's designation. Separately, wallets tied to Shelbit's founder, Siavash Kayvanpour, sent more than $2 million to Nobitex.

Blockchain analytics firm TRM Labs traced more than $6.3 billion in total flows through Shelbit between May 2024 and March 2026, according to Blockhead. Treasury described the exchange as a settlement layer for Iran's broader illicit economy rather than pointing to one single large transfer. Incrypted, citing Chainalysis, reported that Shelbit may have received more than $125 million from Iran's central bank since 2024 and roughly $20 million from crypto mining operations likely linked to Iran.

Treasury also alleges Shelbit laundered tens of millions of dollars for a Persian-language gambling network tied to more than 2,000 gambling websites and two Iranian influencers already convicted of illegal gambling in Iran. The Treasury Department's public statement, quoted by Iran Focus, called the regime's tolerance of that gambling network evidence of "hypocrisy and corruption."

OFAC designated Kayvanpour personally, along with companies he controls in Georgia, Poland and the UAE, under Executive Order 13224 for allegedly supporting the IRGC and Nobitex. Aban Tether was designated separately under Executive Order 13902 for operating in Iran's financial sector, accused of processing transactions with Nobitex and other sanctioned Iranian platforms including Wallex, Bitpin and Ramzinex.

The Dubai regulator angle

Two weeks before Treasury acted, Dubai's Virtual Assets Regulatory Authority had already fined Shelbit General Trading and ordered it to halt unlicensed activity, according to techi.com. VARA had taken enforcement action against the company twice before, in January 2025 and again in July 2026, and the Treasury Department noted Shelbit kept operating anyway.

VARA's findings were about licensing, customer verification and unauthorized marketing. OFAC's designation is about sanctioned counterparties and wallet flows. The two actions targeted overlapping conduct but different violations. Neither Dubai's regulatory record nor OFAC's designation amounts to a criminal conviction. An OFAC listing is an administrative action based on the government's evidence, not a court verdict.

Binance pushes back

Not everyone agrees with the numbers attached to this case. Binance told The Block, as reported by Blockhead, that Shelbit never held an account on its platform and disputed a $540 million figure connected to the case, saying any Shelbit-linked accounts had already been investigated, frozen and reported by Binance itself. This rebuttal from a named party carries weight alongside Treasury's allegations, since the underlying $4 billion sanctions-evasion figure traces back to a Reuters investigation published July 31 rather than to OFAC's designation document itself.

Treasury Secretary Scott Bessent framed the action as proof the pressure campaign, which Treasury calls "Economic Fury," is working. "Treasury will hunt down and dismantle the illicit financial networks that keep the regime afloat," Bessent said, according to Iran Focus. The State Department is offering up to $15 million for information disrupting the financial machinery behind Iran's military.

What's unresolved

No criminal charges have been filed against Kayvanpour or any Shelbit-linked entity in this action. The designation freezes U.S.-touching assets and bars Americans from doing business with the named parties, but it doesn't constitute a finding of guilt in any court.

Prediction markets are treating the sanctions as a signal that a near-term U.S.-Iran nuclear deal is unlikely. According to Crypto Briefing, a prediction market tracking a US-Iran final nuclear deal by August 13, 2026 was pricing in just a 0.1% chance of a "yes" resolution as of this reporting, with similarly low odds attached to later 2026 deadlines. That's a market read on sentiment, not a forecast grounded in diplomatic sourcing.

The open question is whether crypto's core advantage, speed across jurisdictions faster than correspondent banking can monitor, keeps outrunning each round of sanctions. Treasury has now designated Iran-linked crypto platforms roughly every one to two months since January. Whether Shelbit's operators can simply reconstitute under new corporate names in a fourth or fifth jurisdiction is the pattern regulators will be watching next.