In the previous chapter, you learned that one of the key properties of the blockchain is that entities (or nodes) that want to transact with each other are part of the same peer-to-peer network. Examples of such networks have existed for years, such as BitTorrent and even the older Napster. In the same way that transactions are broadcasted to each node in the network, blocks are also distributed and stored across the network. This eliminates the risk of data being held by a central authority since there is no centralized point that hackers can exploit.
In this decentralized network of computer nodes, every node has a copy of the blockchain. Because there is no central owner (or copy) of the data, the quality ...
