Algorithm
1.You have EUR balance in our system 2.User wants to get a withdrawal from their EUR balance on your site to their BTC wallet 3.User uses some kind of “withdrawal” option on your site, chooses BTC as the currency to use for the payout and fills the payout form with their BTC address where they want to receive the funds and the withdrawal amount. 4.After that your system makes the request to our processing. 5.Our system makes an automatic exchange from EUR to BTC, sends funds to the user’s crypto address and your system gets the callback with transaction parameters, including the transaction's status, currency pairs, amount, fees and so on. 6.You decrease the user's EUR balance for the transaction amount