Washington Sanctions Iran’s Bitcoin Insurance Scheme

Bitcoin’s core promise is that no one can stop a payment. Iran found a use for that; on July 31, so did the United States. The Treasury’s Office of Foreign Assets Control sanctioned a network of Iranian state-backed entities that had turned the Strait of Hormuz into a toll booth priced in bitcoin — and then blacklisted the wallets, firms and ships that ran it.

At the center were two organisations: the Persian Gulf Marine Insurance Company and a body calling itself the HormuzSafe Marine Services Authority. According to Treasury, Hormuz Safe required shipping companies to buy transit insurance for passage through the strait, with premiums payable in bitcoin and other digital assets — a way to collect hard value while routing around the Western banking system that sanctions had closed off.

Censorship-resistance, turned against its inventors

The scheme is a clean illustration of why bitcoin is politically double-edged. A settlement rail no government can freeze is a lifeline for a dissident and a loophole for a sanctioned state. Tehran used the second property: bitcoin let it demand and receive payment without a correspondent bank able to say no.

But the same ledger that makes the payment unstoppable also makes it permanent and public. Bitcoin does not hide who holds what; it broadcasts every transaction to anyone watching. Washington could not block the payments, so it did the next-best thing — naming the entities, tagging their addresses, and making it a crime for anyone under US jurisdiction to touch them. The transaction resists censorship; the counterparties do not.

Bitcoin let the scheme skip the banking system. It could not hide the scheme from a sanctions list.

Part of a longer campaign

The action extends a running pressure campaign on Iran’s digital-asset workarounds. Under an operation US agencies branded “Economic Fury,” the government has previously seized around $1 billion in digital assets tied to the Islamic Revolutionary Guard Corps and the Central Bank of Iran. In April, the stablecoin issuer Tether froze $344 million in tokens across two addresses linked to the same network — a reminder that the largest dollar-token issuer can and does act on sanctions lists.

On July 31 the Treasury widened the net further, adding eight vessels from Iran’s “shadow fleet” of tankers along with shell companies registered in Hong Kong and mainland China. The insurance demand priced in bitcoin was one node; the boats and front companies that made the trade move were the rest.

What it signals

For readers who track bitcoin as money in the world, the lesson is not that the asset is a sanctions-buster. It is that states now treat bitcoin flows as a domain of statecraft — something to be surveilled, attributed and sanctioned like any other financial channel. The tooling to trace coins across the chain has matured to the point where a government can build a sanctions case out of on-chain evidence.

That cuts both ways for adoption. It confirms bitcoin is useful enough that a sanctioned government will build a toll around it — and useful enough that the world’s largest economy will spend enforcement muscle to shut that toll down. Neutral money is neutral: it serves the smuggler and the state alike, and increasingly both know it.

Why it matters: bitcoin’s resistance to censorship works for everyone, including regimes — and the same transparency that exposes them is now a standard weapon of financial statecraft.

Editor’s note: details follow the US Treasury’s July 31 designation and contemporaneous coverage. Some activity described by Treasury involved stablecoins as well as bitcoin; this dispatch focuses on the bitcoin-denominated insurance scheme. Nothing here is financial advice.