Explore the TON blockchain comprehensively, delving into its overall architecture, design principles, and important components. One key lesson will focus on the architecture of the blockchain, providing a detailed examination of its inner workings. Another lesson will discuss the design principles of blockchains, showcasing the evolution across three generations. Furthermore, you will delve into the contracts and tokens within TON, devoting separate lessons to each of these essential topics. By the end of the chapter, you will gain a comprehensive understanding of the TON ecosystem and its various elements.