Quick answer
KYC means identity-verification procedures used by a service to understand who its customer is.
What is KYC?
Know Your Customer, or KYC, is a process in which a financial or crypto service collects and checks identity information. The exact documents, timing, and legal basis vary by provider and jurisdiction.
The useful way to approach this term is to separate its definition from the assumptions people often attach to it. In crypto, the same word can appear in a protocol rule, a user interface, a market-data label, or a marketing claim. Check which layer the explanation is describing.
Why does kyc matter?
KYC can affect account access, limits, withdrawals, privacy, and the records a service keeps. A user should read the provider’s privacy notice and local rules rather than assume every platform handles identity data the same way.
Concrete example
See it in a real situation
An exchange may ask for a government ID and proof of address before allowing fiat deposits or higher withdrawal limits.
Common misconceptions
What this term does not mean
- KYC is not a technical feature of a blockchain itself.
- Passing KYC does not prove that an exchange is solvent, secure, or suitable.
Related terms
Sources and further reading
Definitions are written for education and checked against the sources below where relevant. A source can explain a protocol or rule without endorsing every product built around it.