What is a blockchain?

A blockchain is a database made for storing blocks of encrypted data, and chains them together. Hence, the name “blockchain." The blockchain is a record that anyone can add to, that nobody can change, and that isn't controlled by any one person or entity. No one person or entity has control of the information kept in the record. Instead, it’s distributed among the many nodes that make up the network. Everyone can also see changes made in real time, who made those changes, and a history of all the changes.