Unlike other buzzwords, ‘blockchain’ isn’t quite so self-explanatory, so – first things first. What is blockchain, and what does it do? To put it simply; digital information forms the ‘block’ part, and a public database is the ‘chain’. Put them together, and blockchain is a technology which can validate, record and distribute transactions in encrypted – but decentralised – ledgers. It was invented in 2008 to support bitcoin – a digital cryptocurrency which operates independently from a bank.