Blockchain

Blockchain is a digital ledger of economic transactions that is constantly updated by an unlimited number of users and it is considered impossible to corrupt. It is a list of continuous records in blocks. Blocks hold sets of transactions and they connected to the previous blocks. A block is also time stamped (Carlozo ). Blocks are chained with each other through hash identifiers. The complete blockchain is copied in a number of places in the network and this makes blockchain a distributed database (Bozic et al. ).