Blockchain technology was first described in the 1990s; the aim was to timestamp digital documents so that it was not possible to backdate them. However, the technology gained popularity with its application in Bitcoin in 2009.
Blockchain is a distributed, decentralized, public ledger; it’s the record-keeping technology behind the Bitcoin network. As the name indicates, a blockchain is a chain of information-containing blocks. Once data has been stored inside a blockchain, it becomes very difficult to make unauthorized changes to it. Blockchain’s distributed and decentralized nature have made it a very popular technology, although it still faces the same main issues as any technology, namely usability, security, and trustworthiness.
