Why is it called blockchain?

The reason blockchain records are theoretically unchangeable is because the system is built from blocks of data that are chained together in chronological order (hence the name blockchain) so that all transactions are visible to everyone on the network. Blockchain technology relies on cryptography to secure these transactions and, in the case of many types of crypto, to mine coins and tokens.

Why is blockchain considered secure?

A blockchain runs on a decentralized network of computers, called nodes, which enable a form of consensus (peer-to-peer) confirmation that can drive faster, more secure transactions. The distributed, self-governing nature of blockchain thus makes fraud and duplication far more difficult compared with legacy record-keeping systems.

The combination of speed, security, and transparency has not only enabled the growth of cryptocurrencies worldwide, many other industries are now exploring blockchain’s uses as well