Eurocoinpay, from a usable point of view, is a payment application that allows the user (client and business) to pay and receive payments in many different desired cryptocurrency. The Eurocoinpay ecosystem has been conceived to offer an integral service for the user of the cryptographic world. Our main advantage over alternative technologies on the market lies in Eurocoinpay's unique concept integrating payment gateway and exchange, that brings cryptocurrency to a day-to-day use, and that thanks to the unique fusion of Blockchain and IOTA technologies avoids third-party mediation and mining costs, allowing us to offer a 200-300% cheaper service in which transactions are carried out in real time.