Blockchain and cryptocurrencies are increasingly popular technological constructs that are discussed widely in popular and traditional media due to their fundamental implications on the operation of financial markets and monetary policies. In reality, these constructs offer potential implications for the operation of the law that goes beyond the limited areas of finance and monetary policy. In turn, it is a particular challenge to effectively regulate these fluid concepts due to their abstract nature. In this module, students will learn about the fundamental characteristics of blockchain and cryptocurrencies, their relationship with the law and the most recent international attempts to regulate them.