What is Blockchain?

Bitcoin was created to resist the control of the global monetary system, ushering in a new era of decentralized blockchain technology that is fair and transparent.
Simply put, blockchain is a decentralized data ledger system where all information must be verified and stored through a global network of nodes (computers). This means that to alter, control, or forge any data, one would have to hack all nodes worldwide simultaneously - something that is practically impossible.s