The Transport Systems Catapult (TSC) is currently undertaking a project with Sheffield University, working with partners such as IBM and DOVU, to explore the value of blockchain and other distributed ledger technologies (DLT) to the transport industry. Based on interviews, workshops and literature reviews, they have set out to discover the ways that blockchain could be used in transport and whether the industry should be taking note. In this article, TSC Senior Technologist Charles Carter gives Intelligent Transport a primer on the technology in the transport industry.