Blockchain is an emerging technology which registers transactions as a continuously growing list of records, named blocks, which are interlinked and highly secured using cryptography. Blockchain data is stored on a decentralized peer-to-peer network, with no central authority.
Each peer maintains a synchronized append-only ledger, meeting the standards of a consensus protocol. This protocol makes the blockchain virtually impossible to alter, and, at any given moment, allows access to the same version of the truth. The blockchain technology is best known for cryptocurrency transactions, although its potential extends to every single aspect of our digital interactions.