With any disruptive new technology, there will be a certain level of hype. Blockchain has been no exception, with bitcoin and other cryptocurrencies spearheading its way into the mainstream. In the 21st episode of Let’s tech, we take a closer look at the concept of  blockchain, its mysterious origins and most famous applications. Henrik speaks to Juho Lindman, director of the Blockchain Lab at the University of Gothenburg, who researches uses for blockchain in the public sector.