A review on healthcare information systems and consensus protocols in blockchain technology

Abstract

Blockchain technology is a distributed electronic ledger of digital records, events or transactions that are cryptographically secure, extremely hard to forge, and updateable through a consensus protocol agreeable to all connected nodes. [1] The technology uses decentralized consensus algorithms to control database consistency. The database is purely distributed in nature and is shared to all nodes connected to the network. Transactions in the databases are bundled together for specified period of time to form a block of certain number of transactions.