Originally posted by Wig
You would have to prove that by suppling the two original photos. What I'm saying is that I could grab this picture and submit it in a competition saying it was my work. Doesn't prove it is a fake. Unless you have the original photos submitted to the competition.

That's how worth1000 competitions work. You are given an original image and then you have to manipulate it in some way. All the entries will be variations on the original image. The original in that competition would probably show just the woman putting the pole out over unoccupied water.