This book examines the legal and regulatory aspects of cryptocurrencies and assets and the blockchain system on which they are based. It also considers the emerging practical issues involved. The analysis covers a range of economies across the world, such as the USA, Europe, Asia, and Islamic states. The book describes, explains, and analyses the nature of the issues in these major world economies and considers relevant law and regulation and their shortcomings. New to this second edition:consideration of the wide-ranging potential of blockchain-based systems beyond cryptocurrencies and the opportunities that it presentscoverage of the differing regulatory approaches adopted by the G20 economies and major international bodies such as OECD and IMF and a wide range of national statesan exploration of how blockchain-based products can function under the main school of Islamic lawanalysis of secure operating environments for cryptocurrencies and assets, and how to best balance risk and innovation. Law and Regulation of Cryptocurrencies and Cryptoassets will be a valuable resource for students as well as academics, lawyers, regulators, and anyone involved with cryptocurrencies and blockchain.