In this chapter, the architectural design of a blockchain project is analyzed. Blockchain architecture can be described as the design of the structural infrastructure that governs the core operation and interaction of participants on a peer-to-peer network. The same principle applies to a traditional business where embedded systems and procedures dictate day-to-day operations, manufacturing processes, marketing strategies, business development, and so on. The setup and design of these systems directly affect end-user experience, efficiency, profitability, and the reputation of the company.