> In simple words, it’s a slow database. A better way to put it is: "it's a log file composed of blocks." > A blockchain “validates” and permanently stores th

> In simple words, it’s a slow database. A better way to put it is: "it's a log file composed of blocks." > A blockchain “validates” and permanently stores the data after a consensus is reached. Not so. The whole point of a consensus algorithm is to map a path through a tree of blocks (the active chain). That path can shift, depending on messages received by the network, typically in the form of more blocks.