The goal of this book is to clearly and accessibly explain what blockchain is and why it represents one of the most significant technological innovations of the coming decades, alongside AI. The main intent is to provide a solid understanding of the basic principles of this topic, making it comprehensible especially to those without a technical background.

I will not delve into technical details, not because they are unimportant, but because any technical discussion in a book like this risks being partial and, consequently, of limited use. Blockchain is a continuously evolving subject, and for those who wish to explore more technical aspects, there are numerous up-to-date and detailed online resources available.

This book, therefore, does not aim to be an encyclopedia of blockchain but rather a general overview, outlining its fundamental characteristics, benefits, and potential applications. To explore every detail, it will be necessary to refer to more specific documents, advanced studies, or practical experiences.

The objective is to guide readers in navigating this vast and fascinating "world" of blockchain, providing a comprehensive perspective that allows them to appreciate its importance, potential, and challenges. By the end of this reading, you will have the tools to understand not only what blockchain is but also why it is considered a revolutionary technology and how it might impact our society in the years to come.