With it being more than 10 years since the advent of blockchain and AI, there is now a whole new range of solutions that can be built by combining both technologies. By combining these two technologies in a new way, we can address some tough problems. In this chapter, we'll propose a better pattern for application development that leverages the combination of AI and blockchain. This is a hands-on chapter where you will learn more about using blockchain and AI techniques to build a smart application that could potentially save us from further outbreaks of COVID-19, along with other agents of infection. By the end of this chapter, you will be able to identify the benefits of Decentralized intelligent application (DIApp) as you build a sample...