I don't know what's called, but it is very simple:
I won! Doesn't matter if i get bounty or not, what matter is i contributed to this coin with logo. I found it, and it's mine.
I see it is already used on
twitter and i still didn't recieve nothing.
You didn't find it, you stole it from someone! I'm sure a logo should be a creation by the submitter, not stealing some other artists work.