Why Is CoinEx Facing New Sanctions Scrutiny?
Blockchain intelligence firm TRM Labs said CoinEx served as a major gateway for crypto activity tied to Iran, tracing more than $3.84 billion in flows between the exchange and sanctioned Iranian entities over the past 7 years.
The report said CoinEx became the single largest trading partner of Nobitex, Iran’s largest domestic crypto exchange. Nobitex accounted for about $2.7 billion of the traced flows, with activity averaging around $1 million per day since 2018, according to TRM Labs.
The findings place CoinEx at the center of a wider debate over how global crypto exchanges monitor cross-border flows involving sanctioned jurisdictions. The issue is not only whether transactions moved through the platform. It is whether the scale, consistency, and concentration of the activity should have triggered stronger compliance controls.
TRM Labs said CoinEx had direct transaction exposure to more than 60 Iranian crypto platforms. It argued that the pattern suggested a coordinated relationship rather than organic market activity, particularly because major Iranian exchanges allegedly routed between 5% and 10% of their trading volume through CoinEx.
What Did TRM Labs Say About Iranian Crypto Flows?
The report said CoinEx’s relationship with Nobitex deepened as Iranian crypto platforms became more important to sanctions evasion risks. By 2024, TRM Labs said CoinEx was Nobitex’s largest external counterparty, nearly 9 times the size of the next-largest exchange.
TRM Labs also identified CoinEx exposure to wallets linked to several sanctioned or terrorist-linked entities. The firm cited $6 million in transactions involving wallets associated with the Islamic Revolutionary Guard Corps and $374,000 of exposure associated with Palestinian Islamic Jihad.
The findings followed a broader U.S. sanctions push against Iranian crypto exchanges. The Treasury recently sanctioned several Iranian platforms, including Nobitex, Wallex, Bitpin, and Ramzinex, as part of its campaign against Iran’s government and related financial channels.
CoinEx-affiliated mining pool ViaBTC was also cited in the report. TRM Labs said ViaBTC accounted for another $154 million in traced exposure to Nobitex through mining payouts and supplied emergency liquidity to Nobitex after a $90 million hack by Predatory Sparrow in June 2025.
Investor Takeaway
The report highlights a growing compliance risk for exchanges operating across jurisdictions with weak or contested sanctions controls. For investors, the central issue is whether transaction monitoring systems can identify not just direct sanctioned wallets, but repeated exposure patterns across related platforms.
How Did CoinEx Respond?
CoinEx rejected the findings and denied having a commercial relationship with Iranian government-linked entities or domestic Iranian exchanges. The Seychelles-registered exchange said it had not provided active assistance to Iranian government agencies, Revolutionary Guard-related entities, or sanctioned parties.
“Blockchain transactions are open, cross-platform, and traceable by nature. The fact that funds have passed through a platform onchain does not mean that the platform was aware of, supported, or participated in the related fund activity,” CoinEx said. “Data from different third-party blockchain analytics platforms varies significantly, and data from any single platform should not be treated as definitive.”
The company also said it began a review and exit process from all Iran-related exposure after the U.S. sanctioned Iranian exchanges. That response frames the issue as a data interpretation dispute rather than an admission of compliance failure.
CoinEx’s argument reflects a common defense among exchanges facing blockchain analytics claims: onchain flows can prove asset movement, but they do not automatically prove knowledge, intent, or active support. Regulators, however, often focus on whether firms had reasonable controls to detect and restrict high-risk activity once exposure became visible.
What Are The Market Implications?
The dispute raises the stakes for offshore crypto exchanges that serve global users while facing limited direct oversight in major jurisdictions. If blockchain analytics firms can map sustained exposure to sanctioned entities, exchanges may face pressure from banking partners, liquidity providers, regulators, and institutional users even before formal enforcement action occurs.
For compliant exchanges, the case may sharpen the difference between direct sanctioned exposure and indirect exposure through counterparties. That distinction matters because many crypto platforms rely on automated deposits, withdrawals, liquidity routing, and market-making relationships across venues. A platform can become exposed to sanctioned flows even if it does not openly serve sanctioned users.
The report also shows how Iranian crypto activity remains a central concern for sanctions enforcement. Domestic exchanges such as Nobitex have been described by analysts as key channels for dollar-linked crypto liquidity inside Iran, with stablecoins and major digital assets used to move value outside conventional financial rails.
Investor Takeaway
Sanctions exposure is becoming a valuation and counterparty risk issue for crypto firms. Exchanges with high-risk flow patterns may face reputational damage, loss of institutional partners, or future regulatory action even when they deny direct involvement.
The CoinEx case is likely to add pressure on exchanges to strengthen sanctions screening beyond wallet blacklists. The next compliance standard may depend on pattern detection, volume concentration, related-party exposure, and whether firms can show they acted quickly once high-risk flows were identified.
