In this report we provide a deeper understanding of the developers working on, learning about, and interested in blockchain projects, discovering where they live and how they learnt to code. We also provide a specific focus on professional developers involved in blockchain projects, understanding which types of roles they have, which software sectors they're involved in, and which revenue models they use. We deep dive into where blockchain developers go to get information about software development and what types of content they prefer to use for different purposes. Finally, we focus on which blockchain platforms are being used, how many platforms are being used, as well as the experience profile of developers using these platforms.