Digital currencies were the first-ever application of blockchain technology, arguably without realizing its real potential. With the invention of Bitcoin, the concept of blockchain was introduced for the very first time, but it was not until 2013 that the true potential of blockchain technology was realized with its possible application in many different industries, other than cryptocurrencies. Since then many use cases of blockchain technology in various industries have been proposed, including but not limited to finance, the Internet of Things, digital rights management, government, and law.
In this chapter, four main industries namely the Internet of Things, government, health, and finance, have been selected, with the aid of use cases, for discussion.