The Blockchain Fundamentals DeCal is a comprehensive survey of relevant topics in cryptocurrency and the wider blockchain space. From a technological standpoint, we start with the basics of cryptography and economics, establish a solid fundamental understanding of Bitcoin by building it from the bottom up, then explore the myriad of ideas and technologies relating to blockchain technology. On the non-technical side, we start with the history of digital currency, then look at the laws, organizations, trends, and communities behind it to build a complete picture of the ecosystem surrounding blockchain technology.