Blockchain is a system of recording information in a way that makes it difficult or impossible to change, hack, or cheat the system. A blockchain is essentially a digital ledger of transactions that is duplicated and distributed across the entire network of computer systems on the blockchain. The main benefits for the business are as follows: Trust. Blockchain creates trust between different entities where trust is either nonexistent or unproven. Decentralised structure. Improved security and privacy. Reduced costs. Speed. Visibility and traceability. Immutability. Individual control of data.