Blockchain is one of the most exciting tech trends at the moment. It is a distributed, encrypted database model that has the potential to solve many problems around online trust and security. Many people know it as the technology that underpins Bitcoin and cryptocurrencies in general. However, its potential uses are far broader, encompassing digital “smart” contracts, logistics and supply chain provenance and security, and protection against identity theft. There are countless others – blockchain evangelists say it can potentially be used to improve security and integrity in any system that involves multiple parties sharing access to a database.