No offence, but it looks a bit shoddy quick and simple, all lines are crooked. Painted only for the 'first bitcoin painting ever' gimmick and expecting it to be worth something without putting effort in it.
I am not a professional painter and this item is the first in my life, so don't blame for the quality 
Anyways, your are right, I believe that my painting can have some value as it is the first painting ever devoted to the Bitcoin.
Move on.