1. A method of authenticating a photographic image provided from a user by obtaining an authenticated photographic image via a web address at which an authenticated copy of the photographic image is purportedly made available so that the authenticated copy may be compared with the photographic image to prove that the photographic image was authenticated, the method comprising: receiving, by a viewer system, a watermarked image, the watermarked image comprising the photographic image and a watermark purportedly indicating that the photographic image has been authenticated by the authentication server; receiving, by the viewer system, a web address created for the authenticated photographic image; visiting, by the viewer system, the web address to verify the authenticity of the watermarked image, responsive to receipt of the watermarked image; receiving, by the viewer system, via the web address, the authenticated photographic image, a second watermarked image comprising the authenticated photographic image and a second watermark indicating that the authenticated photographic image has been authenticated by the authentication server, or both the authenticated photographic image and the second watermarked image; and displaying, by the viewer system, the authenticated photographic image, a second watermarked image comprising the authenticated photographic image and a second watermark indicating that the authenticated photographic image has been authenticated by the authentication server, or both the authenticated photographic image and the second watermarked image, wherein the authenticated photographic image and/or the second watermarked image is used at the viewer system to compare the authenticated photographic image with the photographic image.