You need to go through multi-step KYC verification by signing up for an account at the exchange which offers the respective card. The company asks you for proof of identity, which can be a drivers license, government-issued ID or passport, as well as proof of address, which can be a utility bill, letter from your local municipality, house rental agreement, tax letter, credit card statement or bank account statement. You must provide your social insurance number and clear and visible picture of the front and back side of your documents, as well as a selfie to sign up for an account at most crypto exchanges.