Before we start coding our blockchain, it is worth noting that the entire source code for this book  can be found on GitHub at the following link: https://github.com/PacktPublishing/Learn-Blockchain-Programming-with-JavaScript. In this repository, you'll find the completed code for the entire project, and you will also be able to explore all of the files that we will be building in further chapters. Therefore, this may be a good resource for you to use as you make your way through the book.