Glossary / Regulation & tax
Sanctions screening
- Definition
- Sanctions screening is the check an exchange runs on your name and your bitcoin addresses against government blocked-party lists before it lets a transfer through.
Every licensed platform runs it, and getting it wrong is the most expensive compliance failure available: Binance agreed to a 968 million dollar penalty with the US Treasury in November 2023 over 1,667,153 apparent violations. Screening covers names, countries and specific blockchain addresses published on sanctions lists. For an ordinary buyer it is invisible until it is not, and the usual trigger is a counterparty rather than you.
How it works
Screening runs in three layers, and only the first one involves your documents.
Identity screening matches the name, date of birth and nationality you gave at signup against the blocked-party lists that apply to the platform: the US Specially Designated Nationals list, the consolidated UN, EU and UK equivalents, and any national list. It runs at onboarding and then repeatedly, because lists change weekly and an account opened cleanly can be caught by a designation made two years later.
Geographic controls come next, keyed off document country, address, phone prefix and network location. A handful of jurisdictions are subject to comprehensive programs that effectively bar service outright, and platforms enforce those with blunt instruments rather than judgment calls. The country guides on this site flag which ones, and this site does not publish workarounds for them.
Address screening is the layer unique to crypto. The US Treasury began publishing digital currency addresses inside the Specially Designated Nationals list in November 2018, when it designated two Iranian nationals along with the bitcoin addresses they used, and hundreds have been added since. Platforms combine that published list with commercial analytics that score how many hops separate an incoming deposit from a flagged cluster. Sanctions liability in the United States is strict, meaning a firm can be penalized without intending anything, which explains why the industry screens far more aggressively than the letter of any list requires.
The limits of the tool were tested publicly. Tornado Cash, a mixing protocol, was designated in August 2022; the Fifth Circuit held in Van Loon that immutable smart contracts are not property that can be blocked; and the Treasury removed the listing on March 21, 2025. That did not end personal exposure for people who build such tools, as the conviction of its founder on a money transmitting conspiracy count in August 2025 showed.
Where you see it
You meet screening as a delay, a question, or a door that will not open.
The common experiences are a withdrawal held for manual review, a request to explain where a deposit came from, a rejected signup from a blocked region, and a frozen balance following an incoming payment the platform's analytics disliked. Peer-to-peer buyers hit it most often, because the coins arriving from a stranger carry a history you did not choose and cannot inspect in advance. Buying from a licensed venue and withdrawing to your own wallet produces a clean deposit history; buying from an anonymous counterparty does not.
If a platform does freeze funds on sanctions grounds, understand what you are dealing with. The firm is not permitted to release blocked property on request, and the route to recovery runs through a license application to the relevant authority, not through customer support. That asymmetry is a good argument for keeping long-term holdings in self-custody, where no intermediary is obliged to make that call.
Sanctions screening vs KYC
Know your customer establishes who you are; sanctions screening tests that identity, and your transactions, against published lists. The two run side by side and get bundled together in support scripts, but they answer different questions and fail in different ways. You can pass identity verification completely and still be blocked, because a name matches a designation or a deposit traces back to a listed address. You can also be refused at verification for a mundane reason, such as an unreadable document or an unsupported country of residence, without appearing on any list at all.