Blockchain is a decentralized, distributed database technology that provides a secure way to store and transfer data. It is essentially a ledger of transactions that is managed by a network of computers, rather than a single centralized authority. The term "blockchain" refers to the way in which the data is stored. Transactions are grouped together in blocks and added to the blockchain in a linear, chronological order. Each block contains a unique code called a "hash" that links it to the pre...