On December 29th, in an interview with podcaster Lex Fridman, Elon Musk explained why Dogecoin (DOGE) cannot become the official currency of Mars. In his opinion, when Mars is colonized, it will belong to those who will live there.
The laws and civilization of Mars will not be bound by the current rules of countries on Earth. “I think Mars itself needs a different currency, because you can’t synchronize because of the speed of light.” He also said, “I don’t know if there will be cryptocurrency on Mars, but it is likely to be, and it will be. Something localized on Mars. I think cryptocurrency is an interesting way to reduce errors in the currency database.”