In recent weeks, Iran has reportedly begun enforcing tolls on oil tankers seeking to transit the Strait of Hormuz, a critical chokepoint through which approximately one‑fifth of the world’s oil supply passes. Open‑source reporting indicates that Iran is charging approximately $2 million per tanker for passage, potentially generating over $20 million per day in toll revenue—an enormous windfall for an economy constrained by international sanctions. Reporting further suggests that cryptocurrency, and stablecoins in particular, constitute a portion of these toll payments, which are exchanged for assurances of safe passage through the strait. But what implications does this have for digital asset issuers?
Iran’s use of cryptocurrency to collect toll payments presents significant compliance challenges for virtual asset service providers ("VASPs") seeking to comply with U.S. sanctions. Token issuers generally do not issue digital assets directly to sanctioned entities. Instead, Iran’s Islamic Revolutionary Guard Corps (IRGC) is reported to acquire cryptocurrency on the secondary market through a complex web of intermediaries and illicit networks, significantly complicating detection and attribution.
The IRGC’s reliance on third‑party networks and layered obfuscation techniques to launder crypto payments substantially undermines the effectiveness of many automated wallet‑tracking and know‑your‑transaction (KYT) tools. These systems typically depend on direct on‑chain exposure to illicit wallets to generate alerts. However, assets laundered through multiple services or protocols, including bridges, mixers, decentralized exchanges, and other obfuscation methods, often evade detection. The cumulative use of these techniques enables Iran and its proxies to obtain access to stablecoins—and by extension, U.S. dollar‑denominated value—while remaining largely undetected.
The reported use of stablecoins and other cryptocurrencies by the IRGC to monetize passage through the Strait of Hormuz represents both a substantial revenue opportunity for the Iranian government and a critical compliance risk for token issuers. These activities underscore the limitations of relying exclusively on automated transaction screening tools to meet sanctions obligations. Addressing this risk requires robust investigative methodologies that combine on‑chain asset tracing with traditional investigative techniques to identify the true origin, control, and beneficial ownership of digital assets.
More broadly, Iran’s reported reliance on cryptocurrency to collect maritime tolls highlights the need for virtual asset service providers to adopt a layered, intelligence driven compliance approach—one that integrates on‑chain heuristics with off‑chain analysis and investigative expertise—to detect and disrupt illicit activity on their platforms.
As a fragile US-Iran ceasefire takes shape, Tehran has signaled that payments in digital currency should form part of any toll system for vessels passing through the Strait of Hormuz, the chokepoint through which around a fifth of the world’s oil normally flows.
