KYC (Know Your Customer) is a customer identification procedure. In simple terms, a crypto exchanger must understand who exactly is carrying out the transaction, especially when it comes to large amounts or certain types of exchanges.

What KYC usually includes

Depending on the exchanger and the requirements of a specific transaction, they may ask for:

first and last name;
an identity document;
proof of identity (for example, a selfie);
sometimes address verification;
additional information about the origin of funds in large transactions.

At the same time, KYC and AML are not the same thing.

KYC answers the question: “Who is our client?”

AML answers the question: “Where did these funds come from, and is there an increased risk associated with them?”

In practice, these procedures often work together.

Why do crypto exchangers use KYC?

The main reason is security and compliance with legal requirements.

A cryptocurrency exchanger is part of the financial infrastructure. Real money and digital assets pass through it, so it is important for the service to reduce the risks associated with fraud, money laundering, the use of other people’s documents, and other illegal operations.

KYC helps the exchanger:

1. Understand who is performing the transaction.

This is especially important for large transfers and non‑standard transactions.

2. Reduce the risk of fraud.

Identification makes it more difficult for attackers to use the service using someone else’s data.

3. Comply with AML/KYC requirements.

For many financial and cryptocurrency services, identification procedures are part of the compliance system.

4. Protect the clients themselves.

If a disputed situation arises, it is easier for the service to identify the owner of the transaction and verify its circumstances.
5. Work with banks and payment systems.

Financial partners also impose requirements for customer and transaction monitoring.

Is KYC always mandatory?

No, there is no universal rule for all crypto exchangers.

The conditions depend on the specific service, jurisdiction, amount, direction of the exchange, and the nature of the transaction. In some cases, identification is required only under certain conditions, while in others, KYC is a mandatory part of working with clients.

Therefore, before making an exchange, it is worth checking the rules of the specific service in advance.

In short: KYC is a way to verify a client’s identity, while AML is a system for checking risks related to the origin and movement of funds. Together, they help make cryptocurrency exchanges safer and more transparent.

KYC verification in a crypto exchange: why it’s needed and how it works