Now here's a better example of what I mean by the sig/logo question on some AI renders. When I first got it I decided not to put any artist names in as style examples because I was wary of misusing it. So I stuck to simple descriptions of subject -- Cute, playful ginger tabby kitten in flower garden, for instance -- and things like highly detailed digital painting, or acrylic painting (since I used to paint in acrylics when I was able to do non-digital art) for the image type. In this case Stable Diffusion gave me six very lovely kitties much like I'd paint myself if I still could. However, one of them had what surely must be somebody else's signature even though I couldn't quite read it. Was this quasi-accidental art forgery/theft or did SD think because the prompt said "painting", then "signature" and provide a facsimile thereof? Being very visually impaired (legally blind) I can't really tell whose name or mark it might be, so the renders are just sitting in a folder on my hard drive. Anybody here recognize it?

The other five are all the same style but nothing remotely resembling writing or watermarks. Why would it "sign" just one and not the rest?