A group of North Korean dissidents, called Cheollima Civil Defense, began selling visas to a future free North Korea. They are the ones responsible for the raid on Pyongyang’s embassy in Madrid on February 2019, as well as the 2017 rescue of Kim Han-sol, the nephew of Kim Jong-un whose father had been assassinated by the regime. The group advertised that it would sell 200,000 "visas" using blockchain technology for visiting Free Joseon, the name the movement plans to give North Korea upon its liberation. The first 1,000 visas have a registration cost of 1 ETH per visa. The use of cryptocurrency reflects how important anonymity is for the dissidents, given that North Korea operates "death squads" that carry out assassinations even on foreign land.