[knarf]

I’m not fully aware of the laws but some individual (or entity) coined currency and I understand THAT to be in violation ... but again ... I’m not sure

[JRandomFreeper]

Private banknotes were common for over 100 years in the US.

/johnny

[Boogieman]

Maybe, if it was coined within U.S. borders. If “mining” is the same as “coining”, then these can be minted anywhere in the world.