In the future, Callisto Company miners operate "pure minting" operations on many moons and bases. They are able to mine actual, physical cryptocurrency in a process called crypto molding. The end result is a beautiful plate of a given crypto, much like the gold and silver bars of yesteryear.
After spending decades as a liquidity swapping tool, Tether eventually scored its biggest deal with the fracking industry of 4 moons - moons of 4 different planets. This led to controversy again, however, as the 4 different moons often had union and governance conflicts. Eventually, Tether split into two completely different coins.