"and telling me he paid for wind. when he saw it drawn right before his eyes."

While he shouldn't have worded it that way, he's right. He has no scan and it isn't in his hands. It doesn't really matter that he saw the art made. I mean, for example, if someone sees the art in a stream and the artist later rips it up, they're left with nothing.

I'm not saying you ripped him off or anything, goodness no! I just mean that he is right in that sense.