In this article, we carry out a study about one of the most disruptive topics in recent times: cryptocurrencies. Whether as a revolution in payment methods, because it is a speculative asset or because of the particularities of the technology on which it is supported, cryptocurrencies are generating a greater impact on our lives, especially in the world of finance. The main objective that we set ourselves is to delve into the knowledge of cryptocurrencies and the technology that supports them, in a way that allows us to have a clear idea of the consequences that their appearance has not only in the financial field, but also in the economy in general. If we make an approximation to these cryptocurrencies and blockchain technology, we will be...