Blockchain is one of those technological fields, along with others like big data, artificial intelligence and automatic learning, that promise to change everything. Thus, in most reports on technological trends, blockchain appears as one of the strongest proposals for the future in relation to cybersecurity systems and secure exchanges. While the world of bitcoins and crypto-currencies immediately comes to mind when we think of this technology, its applications can be very diverse. Although Bitcoin and other crypto-currencies are the most popular examples of the use of blockchain technology, its application to data storage, real estate, asset management, the environment, healthcare, and many other uses are being explored. Blockchain technology is a technological trend that is set to revolutionize the public and private sectors. Much has been said about the capacity of blockchain technology, and in particular its potential to transform the way humans conduct transactions, which could fundamentally redefine the way businesses, institutions, governments and society operate. For example, as Pablo Rodriguez Cafranc points out, to make it clear that it implies that it is blockchain "Imagine that you are travelling by plane and that at all times you can know where your suitcase is, if it is resting in the hold of the aircraft or if unfortunately it is flying carelessly in the opposite direction. Imagine that you can sign contracts without intermediaries and without worrying about the other party breaking them. Imagine you're a musician and every time someone downloads one of your songs anywhere in the world, the copyright is automatically credited to your account.
