US Seizes Nearly $500M in Iranian-Linked Crypto, Including $344M in USDT

The U.S. says it has seized nearly $500 million in Iranian-linked crypto assets, escalating a sanctions campaign that now reaches deep into stablecoins, shipping, oil, and shadow banking. The biggest confirmed chunk: $344 million in Tether’s USDT.

• Nearly $500 million in Iranian-linked crypto assets seized
• $344 million of that was frozen in USDT
• Operation Economic Fury is widening sanctions pressure on Tehran
• Tether froze the funds at Washington’s request
• Iran is also being accused of testing its own crypto workarounds

U.S. Treasury Secretary Scott Bessent confirmed the larger seizure figure during an appearance on Fox Business’s Kudlow, and he made it clear the goal is bigger than just scooping up wallets. Washington wants to make it harder for anyone to do business with Iran at all.

“We are freezing bank accounts everywhere,” Bessent said.

“More importantly, we are making people less willing to deal with the regime.”

“Under Economic Fury, [the Treasury] will continue to systematically degrade Tehran’s ability to generate, move, and repatriate funds.”

That’s the blunt version. The polished version is that the U.S. is trying to squeeze Tehran’s access to the global financial system from every angle it can find. The less polished version: choke the pipes, scare off the middlemen, and make the whole machine a giant pain in the ass to operate.

The crypto seizure is part of Operation Economic Fury, launched by Donald Trump in March 2025. On Tuesday, the Treasury’s Office of Foreign Assets Control (OFAC) sanctioned 35 entities and individuals tied to Iran’s shadow banking network. In plain English, that’s an informal financial web used to move money outside normal banking channels, usually through intermediaries, front companies, and other sanitized-looking nonsense that exists to keep the real flow hidden.

At the same time, the U.S. targeted a Chinese oil refinery and around 40 shipping companies for moving Iranian crude oil. Another 14 individuals and entities were hit over components linked to Shahed-series attack drones and ballistic missile propellants. Since February 2025, OFAC says it has sanctioned more than 1,000 Iran-related persons, vessels, and aircraft under the operation.

This is not a symbolic warning shot. It’s a full-spectrum financial and logistical offensive.

The part that matters most for crypto is how the seizure happened. The publicly cited $344 million portion was held in Tether’s USDT, and Tether confirmed it froze the funds at the request of U.S. authorities.

That distinction is the whole ball game. USDT is a centralized stablecoin, which means Tether can blacklist or freeze addresses if it chooses to comply. So while stablecoins are often marketed as fast, borderless digital dollars, they are also only as “decentralized” as the issuer allows them to be. If the company behind the token can lock the funds, then the token is not really censorship-resistant in the Bitcoin sense. It’s more like a payment app wearing a crypto costume.

Bitcoin is different. A Bitcoin balance cannot be frozen by some CEO with a compliance form and a bad mood. If you control the private keys, you control the coins. That doesn’t make Bitcoin invisible or immune to surveillance — especially when it touches exchanges or regulated on-ramps — but it does mean there is no central issuer to call in and press the red button. That’s why BTC remains the cleanest digital bearer asset in the market.

That doesn’t make Bitcoin a magic escape hatch for sanctioned states, either. It just means the network itself is harder to control than the stablecoin layer built on top of it. A lot of the crypto market still depends on chokepoints: issuers, exchanges, on-ramps, off-ramps, and blockchain analytics firms. When governments lean on those pressure points, the fantasy of pure permissionless finance starts to look pretty damn flimsy.

And there’s a dirty irony here: the same crypto rails that can help states or actors bypass banking restrictions can also be frozen, traced, or blacklisted when they touch the wrong counterparties. Crypto is neutral infrastructure. It does not care who is holding the wrench. People, institutions, and states are the ones deciding whether that wrench is used for freedom, trade, censorship resistance, extortion, or sanctions evasion.

Iran appears to be exploring its own workarounds. Reports earlier this month said Tehran was considering Bitcoin tolls for ships passing through the Strait of Hormuz, the narrow and strategically vital oil shipping route between the Persian Gulf and the Arabian Sea. If that sounds like some absurd geopolitical fever dream, welcome to 2025, where shipping lanes, sanctions, and crypto can end up in the same sentence without anybody blinking.

There’s also a scam layer, because where there’s pressure, there are parasites. Maritime risk firm Marisks warned that fraudsters were impersonating Iranian security services and demanding Bitcoin or USDT payments from shipowners trapped near the strait. That’s the ugly side of crypto’s speed: fast settlement is a feature for legitimate users, and a gift-wrapped tool for criminals. Same rail, different passenger manifest.

The broader picture is simple enough. The U.S. is trying to cut off Iran’s access to money on every front it can reach — bank accounts, shipping firms, oil buyers, overseas assets, drone supply chains, and now crypto wallets. Meanwhile, crypto is being pulled deeper into geopolitical conflict, not as a side note, but as part of the battlefield itself.

At the time referenced, BTCUSD was trading at $77,367 on the 24-hour chart. The price is not the point here, but it does underline something important: while governments run sanctions campaigns and compliance teams sweat over blacklists, Bitcoin just keeps clearing blocks. No press release required.

Key takeaways and questions:

• How much crypto did the U.S. seize from Iran?
  Nearly $500 million in Iranian-linked digital assets, including a confirmed $344 million in USDT.

• Why does the $500 million figure matter?
  Because the earlier public figure was $344 million, leaving an unexplained gap of about $156 million. That missing detail deserves scrutiny.

• Who confirmed the seizure?
  Treasury Secretary Scott Bessent confirmed it publicly on Fox Business’s Kudlow.

• What is Operation Economic Fury?
  It is the Trump administration’s sanctions campaign, launched in March 2025, aimed at systematically degrading Iran’s ability to generate, move, and repatriate money.

• Why does Tether’s USDT freeze matter?
  Because it shows centralized stablecoins can be frozen by the issuer, which makes them very different from Bitcoin. That’s useful for compliance, but it’s also a reminder that “decentralized” gets stretched pretty thin in parts of crypto.

• Can Bitcoin be frozen the same way?
  Not at the protocol level. Bitcoin is controlled by private keys, not a central company. It can still be watched and pressured through exchanges, but it cannot be blacklisted by a single issuer the way USDT can.

• What else is the U.S. targeting?
  Iran-linked banks, shadow banking intermediaries, oil shipping networks, drone supply chains, and missile-related components.

• Is Iran using crypto too?
  Reports suggest it may be exploring Bitcoin tolls in the Strait of Hormuz, though that remains a report rather than a fully confirmed policy.

• What’s the risk for the wider crypto market?
  Sanctions pressure is pushing more activity toward compliance-heavy chokepoints, while also encouraging gray-market uses of crypto. That means more surveillance, more blacklisting, and more excuses for regulators to treat the whole sector like a potential laundering tool.

The uncomfortable truth is that crypto is now part of statecraft. That has two opposite meanings at once: it proves digital assets are no longer fringe toys, and it also proves governments are serious about controlling the parts they can still reach. Bitcoin remains the hardest asset in this mess to censor cleanly. Stablecoins? Those are increasingly looking like programmable fiat with a kill switch.