Let’s start a conspiracy theory:

1) Of course we all know aliens are really just very technologically advanced humans living in a sort of government regulation free Galt’s gulch, but

2) few realize these “aliens” need more genes for their gene pool for optimal future outcomes…thus they need to select the best from humanity to import into their society.

3) And that’s why Bitcoin was born. Their society needs genes for low time preference, persistence, hard work, fairness, etc…and they want a trustworthy record of who moved first and for how long. You see, Bitcoin is really your gulch admission test.