Web 3 is the evolution of Web 2 as a consequence of the progression of technological tools and the development of new technologies (such as blockchain and NFTs). It is the most advanced internet and is built through multiple blockchains, where there is no centralized ownership of content by platforms, as in Web 2. This new internet model aims to create more intelligent, connected, open websites. It is a much more open, democratic and secure platform than the previous one since users can share information without fear of being deleted, modified or censored. In addition to the decentralization, transparency and security offered by this technology, it is essential to know and take into account some of the fundamental characteristics that represent Web 3: