I'm not sure if you're asking whether or not there's information encoded in the image's metadata, or whether they're using some sort of additional watermark tha

I'm not sure if you're asking whether or not there's information encoded in the image's metadata, or whether they're using some sort of additional watermark that appears when the image is downloaded or copied, ala this article[1]. If you're asking about metadata, I can say that on the Getty images I've used in the past (not for years though, so it's old data,) they were pretty diligent about ensuring Authorship information in the metadata. I can't remember whether or not there were any specific Getty attributions in there, like a link back to a page it could be purchased from, but in other comments here I see that they have a 'creative ID', which I didn't know about, so it's possible I just glossed over it. If you're asking about the second, I believe the answer is no, but I say so without having tried it, even cursorily. http://blog.makezine.com/2009/02/16/invisible-watermark/ http://blog.makezine.com/2009/02/16/invisible-watermark/