OFAC Sanctions Iranian Crypto Exchange BitBank Over IRGC Bitcoin Transfers

Treasury's Operation Economic Outcast reaches Iran's digital asset sector, but the enforcement runs through a custodian, not the protocol.

Key takeaways

• OFAC designated Iranian exchange BitBank on September 17, 2026, alleging, per Treasury, that it moved hundreds of millions of dollars in Bitcoin to the IRGC between June and July, per the Treasury press release.
• The action also sanctions BitBank's software developer and three network executives, and deploys a sectoral determination under Executive Order 13902 that lets Treasury sanction anyone supporting Iran's digital asset sector without requiring a separate terrorism link.
• Every enforcement mechanism in this action ran through a centralized custodian. The Bitcoin protocol was not touched.

The U.S. Treasury's Office of Foreign Assets Control designated Iranian crypto exchange BitBank on September 17, 2026. Treasury alleges the platform transferred hundreds of millions of dollars in Bitcoin to the Islamic Revolutionary Guard Corps between June and July of this year, an allegation, not a verified on-chain figure. The designation is part of Operation Economic Outcast, a campaign Treasury Secretary Scott Bessent launched on August 24, 2026, to sever every financial channel sustaining the Iranian regime.

BitBank, also listed under the alias BitBank3 and operating via the domains bitbank3.com and bitbank.com, has been connected to Zanjani since at least 2024 per Treasury. OFAC also designated Pishtaz Simorgh Electronic Trade Company, BitBank's software developer and a subsidiary of the previously sanctioned Dot One Value Creation Group, along with three individuals: Mohammad Mahdi Zaker Hossein (Pishtaz Simorgh CEO and Dot One manager), Seyed Adel Heidari (Dot One board vice chairman), and Hossein Ali Zaker Hossein (a Dot One executive). All designations were issued under Executive Order 13902.

The Zanjani Thread and the Hormuz Toll Scheme

BitBank is controlled by Babak Zanjani, an Iranian financier OFAC had previously designated. Zanjani was sentenced to death in Iran in 2016 for embezzling from the National Iranian Oil Company, itself an OFAC-designated entity. His sentence was commuted in 2024, and by 2025 he had publicly re-emerged backing regime-linked projects.

Treasury alleges that since June 2026, the already-sanctioned Hormuz Safe Marine Services Authority used BitBank to route Bitcoin-settled toll payments to the Iranian regime, charging tankers per passage through the Strait of Hormuz. Pre-designation reporting from Cryptonews.net cited a toll range of $1 million to $2 million per vessel, though Treasury's own release does not specify that range. That is nation-state financial warfare running on Bitcoin rails: the regime collecting hard money for controlling a chokepoint that handles roughly a fifth of global oil shipments.

Bessent was direct: "Today's designations of Iranian digital asset infrastructure make perfectly clear that efforts to finance the Iranian regime using cryptocurrencies are not beyond OFAC's reach. If you support the Iranian regime, the Department of the Treasury will sanction you."

This action did not come without context. OFAC had previously designated Zanjani alongside UK-registered Zedcex Exchange and Zedxion Exchange in January 2026, with additional network entities sanctioned in July 2026. Per TRM Labs, in its own investigation, TRM Labs identified approximately $1 billion in IRGC-linked activity flowing through those earlier exchanges. BitBank appears to be the successor infrastructure.

The Custodian Is Always the Kill Switch

The sleeper clause in this action is the EO 13902 sectoral determination. Treasury is asserting the authority to sanction anyone operating in or supporting Iran's digital asset sector, with no requirement to prove a specific terrorism nexus. That is a broad legal lever. Any non-U.S. OTC desk, wallet provider, or infrastructure operator that has touched flagged addresses now sits inside the blast radius.

Iran's broader pivot to Bitcoin and USDT as trade settlement rails has been building for some time. Treasury's response is to treat every custodial layer in that infrastructure as a target. The enforcement perimeter is widening.

The structural point is worth stating precisely. OFAC did not crack Bitcoin. It cracked a company that held Bitcoin. The same architecture that took out BitBank is the one that pressured Binance into a $4.3 billion settlement and shut down BTC-e. In every case, the enforcement vector is the custodian: a centralized entity sitting inside a jurisdiction, holding keys it controls, subject to a designation that freezes everything it touches.

The base layer never moved. The protocol never complied. A company did.

The thesis here is falsifiable. If OFAC demonstrates it can directly censor, freeze, or reverse a self-custodied Bitcoin transaction at the protocol layer, without going through an exchange or custodian, the argument breaks. A protocol-level seizure would change everything. That has not happened.

The attack surface remains the intermediary, every time. Even ostensibly non-custodial platforms comply when they have a centralized chokepoint. The only clean escape from this enforcement architecture is self-custody with no counterparty.

What to Watch

The sectoral determination under EO 13902 is the mechanism to track. Treasury can now expand the sanctioned perimeter to any entity that touches Iran's digital asset infrastructure, no individual designation required. Watch whether OFAC moves against non-U.S. exchanges or payment processors that processed BitBank transactions, and whether the Hormuz toll scheme triggers further designations tied to specific tanker operators or maritime insurers.

Note: The sanctioned entity (bitbank3.com) is not related to the Japanese exchange Bitbank (bitbank.cc), a separate, unrelated company.

Sources

• U.S. Treasury OFAC Press Release, BitBank Designation, September 17, 2026