Just an idea....
But someone should come out with a little program for content producers and buyers that could embed a little point of origin ID including 2257 Custodian of records info - into the picture or movie itself.
Content providers would run this app to encode their information into the content before it's released.
Then you would run a reader program against it, with a password or whatever and you could identify what came from where very easily.
That, or keep original filenames & a cross referenced db.. but that is sometimes not possible for various reassons I'm sure.
Edit: I guess this is kind of what digimark is all about.. and I suppose resizing/resampling the image would probably render an id like that useless as well.
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