In this episode we are joined by Jeff and Rootzoll who have been active contributors to the Bitcoin ecosystem for over a decade since 2011. They have been early adopters and proponents of the Lightning Network for 5 years since 2016. Their Berlin based company Fulmo, which means Lightning in Esperanto, is focussed on research, development and consultancy for the Bitcoin Lightning Network, and they are the organizers of the Lightning Hackdays, which is a technology and building focussed unconference, and also the first ever Lightning Conference that took place in 2019 in Berlin. Rootzoll is the lead maintainer of the free and open source Lightning Node Package Raspiblitz, which makes it fairly simple even for non-technical users to run a sovereign bitcoin and lightning node from home on affordable hardware. They are currently preparing the next iteration of the Lightning Hackdays which will take place in a little under a month in the metropole of Istanbul / Turkey.