Using Checkout method, invoices can be white-labelled and integrated into your website, without redirecting the customer to CoinGate.
This is achieved by pre-selecting BTC, LTC, etc as the payment currency, and retrieving the
payment_address parameters. These are sufficient for a customer to complete the payment, as well as to generate a QR code which a customer can scan with a mobile wallet.
You can find out which payment currencies can be used using this list: https://api.coingate.com/v2/currencies?native=true&enabled=true&merchant_pay=true