What is the blockchain? What is a distributed ledger? What do people mean when they talk about ERC-20? What ist he difference between a hard and soft fork? And between hot and cold storage? Containing over 300 entries on all aspects of crypto, tokens and digital assets, this encyclopedia incorporates the latest information available from academia and practice on these topics. Loaded with clear, concise, and authoritative information, it is the most comprehensive single-volume A-Z reference work of its kind. Our aim in preparing this dictionary is to share the vocabulary of a newly emerging field of business and resarch endeavour. We are convinced that this will make a major contribution to our mutual understanding. It thus is essential for all practitioners, students and educators in the field of crypto who want to ensure that we use a common language throughout the ecosystem.