Spain is rapidly developing in the field of digital finance, and Zaragoza is one of the cities where the demand for cryptocurrency exchange is constantly growing. Owners of digital assets are looking for reliable and profitable ways to convert their funds, whether it is an exchange for cash euros (EUR) or the purchase of stablecoins such as USDT. There are several ways to conduct exchange transactions, including crypto exchangers, exchanges, P2P platforms and specialized services. However, it is important to consider the cryptocurrency rate, fees, reserves, as well as the security level of each transaction.