KYC (Know Your Customer)
In simple terms
KYC is like showing your ID at a bank. Crypto exchanges ask you to prove who you are before you can buy or sell digital money, just like traditional financial companies do.
Definition
Identity verification required by many exchanges.
In depth
KYC is a regulatory compliance process where cryptocurrency exchanges collect and verify user identity information—typically government-issued ID, proof of address, and sometimes biometric data—before granting account access and trading privileges. This identity verification is enforced through integration with third-party verification services that validate documents against government records and screen users against sanctions lists. Exchanges implement KYC to comply with anti-money laundering (AML) and counter-terrorist financing (CTF) regulations, creating an on-chain connection between wallet addresses and verified real-world identities that regulators can audit.
How does KYC (Know Your Customer) work?
A regulated business collects identifying information before opening an account — typically name, date of birth, address, and a government-issued ID, often with a selfie or liveness check. Automated systems compare that data against records and document security features to confirm it is genuine, then screen the person against sanctions lists and politically exposed person lists. The customer is assigned a risk rating that determines how closely their activity is monitored afterwards, and details are refreshed periodically. In the United States this sits inside a firm's wider obligations under the Bank Secrecy Act; requirements differ by country and by licence.
An example
Illustrative case: someone signs up at a US exchange and can browse but not deposit. They upload a driver's license and take a selfie; the check clears within minutes and a $500 deposit limit opens, rising after further verification. A second user's address does not match records, so the account is held for manual review. What is required varies by country and by platform.
Figures are illustrative only.
What beginners get wrong
- Uploading identity documents to a platform found through a social media advert is risky, because those documents are often the actual target.
- Signing up with a nickname or an outdated address creates record mismatches that stall verification and can block withdrawals later.
- Trying to work around verification generally breaches the platform's terms and risks the account being closed with the balance locked.
- Expecting privacy on a verified account is a misunderstanding; the platform links its activity to a confirmed identity and reports as required.
Related terms
Part of
How do you buy cryptocurrency safely? — the subject page for buying crypto, with all 15 of its definitions in one place.
Educational only — not financial advice.