Implement blockchain from scratch covering all the details with Racket, a general-purpose Lisp. You'll start by exploring what a blockchain is, so you have a solid foundation for the rest of the book. You'll then be ready to learn Racket before starting on your blockchain implementation. Once you have a working blockchain, you'll move onto extending it. The book's appendices provide supporting resources to help you in your blockchain projects. The recommended approach for the book is to follow along and write the code as it's being explained instead of reading passively. This way you will get the most out of it. All of the source code is available for free download from GitHub. What You Will Learn Discover the Racket programming language and how to use it Implement a blockchain from scratch using Lisp Implement smart contracts and peer-to-peer support Learn how to use macros to employ more general abstractions Who This Book Is For Novices that have at least some experience with programming, as well as some basic working experience with computers. The book also assumes some experience with high school mathematics, such as functions.

Get introduced to software verification and proving correctness using the Microsoft Research-backed programming language, Dafny. While some other books on this topic are quite mathematically rigorous, this book will use as little mathematical symbols and rigor as possible, and explain every concept using plain English. It's the perfect primer for software programmers and developers with C# and other programming language skills. Writing correct software can be hard, so you'll learn the concept of computation and software verification. Then, apply these concepts and techniques to confidently write bug-free code that is easy to understand. Source code will be available throughout the book and freely available via GitHub. After reading and using this book you'll be able write correct, big free software source code applicable no matter which platform and programming language you use. What You Will Learn Discover the Microsoft Research-backed Dafny programming language Explore Hoare logic, imperative and functional programs Work with pre- and post-conditions Use data types, pattern matching, and classes Dive into verification examples for potential re-use for your own projects Who This Book Is For Software developers and programmers with at least prior, basic programming experience. No specific language needed. It is also for those with very basic mathematical experience (function, variables).