A system and method for protecting the integrity of a group of images is
provided. One embodiment for protecting the integrity of a group of
images comprises watermarking each one of a plurality of images in an
image group with a unique watermark having at least an image digest, the
image digest comprising information that identifies the watermarked image
as an original image, and the plurality of images having a predefined
order in the image group; and including in selected ones of the unique
watermarks a unique decryption key, each one of the unique decryption
keys configured for decrypting the unique watermark of a next image in
the image group.