What Is AML and How Exchanges Vet Their Users

What AML Means in Plain Terms

AML (Anti-Money Laundering) is a set of rules and procedures that require exchanges and other financial institutions to check where a customer's money came from and monitor for suspicious activity: more in our glossary. The point isn't to make life harder for ordinary users — it's to give a regulated exchange a way to confirm funds aren't tied to criminal activity.

KYC: AML's First Checkpoint

KYC (Know Your Customer) is AML's practical side: an exchange verifies a user's identity, usually in tiers. A basic tier is often limited to email and phone and unlocks small limits; full verification — a government ID, a selfie, sometimes proof of address — removes most deposit and withdrawal caps. The higher the limits, or the riskier the operation, the stricter the check an exchange will request.

The Travel Rule: Why Exchanges Need Data on the Recipient

The Travel Rule applies the same logic banks have followed for decades to virtual asset transfers: an exchange must collect and pass along data about both the sender and the recipient. FATF's baseline recommendation is a $1,000 (or €1,000) threshold, but individual jurisdictions tighten it further — the US applies a $3,000 threshold, while the EU applies a zero threshold, meaning the rule covers essentially every crypto transfer, Chainalysis's glossary explains.

What Happens to Flagged Transfers

Beyond identity checks at sign-up, exchanges screen incoming and outgoing transactions in real time against sanctions lists and databases of addresses linked to darknet markets, hacks, and mixers — services designed to obscure a crypto transaction's trail. If a sender's address shows up in one of those databases, the transfer can be held for manual review before the funds ever reach the user's balance.

What This Means for Regular Users

The upshot: if an exchange suddenly asks you to prove your source of funds or temporarily freezes a withdrawal, that's almost always a standard procedure, not a sign something is wrong with your account specifically. Keep basic proof of where your money came from on hand (statements, transfer history), and avoid transaction-obscuring services if you plan to keep using regulated exchanges — those are the addresses that get flagged for manual review most often.

This article is for informational purposes only and does not constitute investment advice.