Image varification

I want a webpage that you can download folders of 20 images from.

I want each of those images to have 1 or 2 pixels colours inverted.

I want each subsequent download to invert different pixels to the previous downloads.

Would a measly £100 be enough to persuade someone to create such a thing?

You don't even have to modify the pixel values to fool the duplicate check. People who do so are disgusting, ruining images like that.

Also, doing this takes literally less than 80 characters of source code in PHP