The US Treasury's Office of Foreign Assets Control added the Iranian cryptocurrency exchange BitBank to its sanctions list on September 18, in an action that also targeted the exchange's developers and three associates, ChainCatcher and WBAP report.
The designation — a fact of administrative action — rests on allegations that remain unproven in any court: Treasury accuses the network of helping transfer hundreds of millions of dollars in Bitcoin to Iran's Islamic Revolutionary Guard Corps. Some reports additionally link the exchange to Babak Zanjani, an Iranian businessman already under US sanctions, and to payments tied to Strait of Hormuz shipping. Those secondary details appear in single-outlet reporting and are treated here as unconfirmed.
The Campaign Pattern
The action is part of what Treasury has branded Operation Economic Outcast — a joint enforcement campaign with international partners intended to sever Iran's access to global financial and digital-asset markets, per Investing News Network. It follows the earlier designations of Iranian exchanges Shelbit and Aban in the same campaign, which TrustGrade News covered as the crackdown widened.
The enforcement perimeter is drawing in adjacent infrastructure. Separately, US authorities are seeking about $61 million in crypto tied to alleged Iranian oil sales that moved through Binance accounts, TheStreet reported via Yahoo Finance. Binance said it "did not permit any transactions with sanctioned individuals," that it cooperates with law enforcement, and that it will "investigate, restrict or freeze accounts where appropriate, offboard users, and report to relevant authorities" wherever sanctions risk is identified.
What Sanctions Actually Do Here
An OFAC designation cuts the named parties off from the US financial system and exposes third parties who transact with them to secondary sanctions. For an exchange already operating outside US jurisdiction, the practical effect is on its off-ramps: every fiat corridor, stablecoin issuer and downstream service that touches US infrastructure becomes a liability the moment it processes BitBank-linked flows. Tether's compliance freeze on XinBi-designated addresses earlier this month showed the same mechanism — sanctions designations convert into private-sector enforcement within days.
The designations of developers, not just the corporate entity, also mark an escalation worth noting: writing and maintaining exchange software for a sanctioned operator is now itself a sanctionable role.
Unadjudicated, but Operationally Real
Allegations of IRGC funding through sanctioned exchanges follow a familiar evidentiary pattern: on-chain tracing by Treasury or partner agencies, summarized in designation notices, with the underlying intelligence not publicly released. The IRGC-transfer claims against BitBank are allegations until adjudicated — but the designation itself is immediately operative, and compliance teams at every major venue are already required to treat the named addresses as toxic.
TrustGrade tracks sanctions exposure and security posture for exchanges and protocols. Verified trust data: trustgrade.ai.