Hi throwaway049, yes thats right, both your comments spot on. The main goal is to prove ownership to support legal sale of image. and the real target for sales

Hi throwaway049, yes thats right, both your comments spot on. The main goal is to prove ownership to support legal sale of image. and the real target for sales are buyers that need top quality high res images. Someone mentioned another idea for combatting pircay, eg identifying photos on the web that may be copies, and that is an interesting service that would be way down the road if at all.