A blockchain is a kind of database invented in 2008 that stores and secures information in sequential blocks. Unlike the case with traditional databases, a blockchain’s contents are not kept on a ...

Forbes contributors publish independent expert analyses and insights. I’m an Associate Professor of Finance at the University of Nicosia. Three years ago, blockchain had an energy problem. Now that ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Permissioned blockchains require user ...

Blockchain is a decentralized, digital database that stores transactions and other forms of data. Key blockchain features include immutable records, distributed ledger security, and smart contracts.