Hugo Benedetti is a professor in Chile who teaches courses about Blockchain and other crypto-currencies. Here he explains how the system works, and answers Metta's questions about how it can be used to help dissident Russians whose funds are blocked by the sanctions. Evidently this not going to be of much value to oligarchs, for it is easy to trace large amounts of money. For the video, audio podcast, transcript, and public comments: https://tosavetheworld.ca/episode-436-crypto-currencies/ . Then scroll down and post your own thoughts.