A blockchain is a constantly growing list of records (called blocks) that are virtually chained or linked using cryptography. Each block contains a cryptographic hash of the previous block, a timestamp, and data corresponding to a transaction. Blockchains are primarily used as a permanent, open digital ledger that records online transactions. Records in a blockchain cannot be altered retroactively without leading to a change in all the subsequent blocks.
Enterprises need necessary hardware such as servers, storage, or components to run a network of computers.