Summary

This chapter introduced blockchain technology at an advanced level. First, we discussed blockchain's progress toward becoming a mature technology, followed by some basic concepts about distributed systems, and then the history of blockchain was reviewed. Concepts such as e-cash were also discussed.

Various definitions of blockchain from different points of view were presented. Some applications of blockchain technology were also introduced. Next, different types of blockchain were explored. Finally, the benefits and limitations of this new technology were also examined. Some topics such as blockchain scalability and adaptability issues were intentionally introduced only lightly, as they will be discussed in depth in later chapters.

In the next chapter, we will introduce the concept of decentralization, which is central to the idea behind blockchains and their vast number of applications.