What is blockchain?
Blockchain is a shared, decentralized and distributed ledger technology in which transactions are added in a verifiable and permanent manner. It is essentially a database of records shared across identical systems in a network. Often confused with Bitcoin and other cryptocurrencies, blockchain is the underlying technology that powers them. In Bitcoin, the ledger is public and the transactions are anonymous. But for business networks, the blockchains are often private, permissioned networks where access is only granted to trusted parties in a system.