A lot of people are talking about the block chain these days. In its simplest form, the block chain is a database that stores a history of every bitcoin transaction that has ever taken place. It’s the core innovation of the bitcoin protocol and our company’s namesake. Once such a record is stored in the block chain, it can never be reversed. This makes it perfect for tracking records in a decentralised and immutable fashion. Not only is this system great for keeping track of who owns what, but it also has potential to transform digital identity, property rights, and more.