In this chapter, we began with the fundamentals of cryptography and cryptocurrency. We also got an understanding of its workings and techniques. Then we moved on to an introduction to Bitcoin, its history, and the various wallets and alternate currency available apart from Bitcoin. We then looked at what blockchain is, its structure, features, and the various types available. This chapter has given us a bigger picture of what makes Bitcoin and blockchain the next major innovation after the internet.
In the next chapter, we will focus on decentralization. You will become familiar with decentralization, which sits at the core of blockchain as an innovation, and you will get insights into how decentralization works, what can be decentralized, and what its impact on the world is. We will also go through the pros and cons of decentralization, giving you a holistic overview of it. Stay tuned!