John McAfee: Bitcoin is not a bubble because it costs $1000 of electricity and hardware to produce 1 bitcoin.
Bitcoin now has a running Bitcoin blockchain node in space. This is interesting solution for processing offline transactions (when the Internet is down)! I have never heard about other ("pre-crypto") payment networks launching their own satellites (although they do use satellite network communication channels). Should every payment network and cryptocurrency launch its satellite, or maybe even a network of satellites like GPS to cover the entire Earth surface?