In 2013, nineteen-year-old programmer Vitalik Buterin published the concept of a new platform for creating online services based on the blockchain. In ten years, Ethereum has become not only the second most popular cryptocurrency, but also the basis for an entire world of decentralized applications, smart contracts and NFT art. In his articles, Buterin reflects on the development of cryptoeconomics and the key ideas behind it, from the features of the Ethereum protocol to game theory, public goods financing and the creation of autonomous network organizations. How can blockchain services help people achieve common goals? Can cryptocurrencies replace traditional financial instruments? Do they lead to a brave new world in which power is held not by governments and corporations, but by people united by common values and interests, or do they serve as a source of inequality and cynical financial speculation? In this book, Buterin emerges as a passionate thinker, a profound social theorist, and an activist who argues about much more money and is not afraid to ask difficult questions and propose solutions to controversial problems.