The book is a good introduction to the industry concepts. Blockchain often perceived as a technology only without understanding of other aspects of the phenomenon.
What is the blockchain?
Blockchains are new technology layers that rewire the Internet and threaten to side-step older legacy constructs and centrally served businesses. At its core, a blockchain injects trust into the network, cutting off some intermediaries from serving that function and creatively disrupting how they operate.
Blockchain has technology, business, and legal aspect. It is a mechanism that allows transactions (and currencies) without a need of trusted central authority.
As blockchain has three different aspects, it can potentially bring change and innovation into technology, business, and also legal establishment. From another side, blockchain faces obstacles to overcome in all three fields (technical nuances, business processes, and local laws). It will be interesting to watch how blockchain will evolve and which aspects will be more critical for wider adoption.