I entirely understand your purpose in putting the copyright info on Martin, entirely so. I am just not sure that the way you are doing it is offering a whole lot of protection. The (c) superimposed as a watermark does not attribute it to yourself and the line that puts your own name, etc. is easily cropped from the bottom of the picture so would not help.
I am absolutely not saying this as criticism, I think your work is excellent and exactly the kind that could easily get 'ripped off' so protection is very important. There are other non-destructive ways of applying encrypted copyright information to an image (admittedly the software to apply it is not cheap!) but as a professional it might be worth considering. Anyone else have specific ideas of how Martin and others could protect their work. We all know there is no 100% method but something that strongly deters is definitely better than nothing.
I rely on the fact that my pic is small (you might notice I never put my pics on here so that they take up the full screen but keep them to about 20-22cms wide) and low res as well as compressed and at 72 dpi and only 8 inches across, the equivalent image printed at 300 dpi would only be 2 inches wide and therefore almost useless for practical usage.
Admittedly some might say I am also relying on the fact mine aren't good enough to nick anyway but if they do I'll have to slap them.... HARD <stern looks all round!>
Cheers,
Rob