True enough... there would most likely be no Bitcoin or other alt. coins without the blockchain... Bitcoin just happens to show up as the openly visible manifestation. Now it makes me wonder if those "alien worlds'" virtual credits are also blockchain based. Or (if I were to put on my conspiracy theorist tinfoil faraday-cage hat) of the blockchain is based on alien tech?

Didn't know that about the MAID coin... I've seen it mentioned here and there, but really know nothing about it.