In addition to the "CHANNEL NUMBER, (TWO DIGITS, WRITTEN VERTICALLY)" and the numbers below that, the header right next to that has been moved a little bit.

Have a look at the difference between the original and the modified file:
http://i.imgur.com/rXn7XZ4.jpg

You can see it nudge around here:

http://i.imgur.com/0aDncXb.gif

Along with the XMP data describing traces of some random brushstrokes around the image (of which I composed perhaps a more accurate plot here) , I feel like this header moving is probably unrelated. Just mistakes left by the riddler. But I thought to share anyway! You have made so much progress and I haven't been able to contribute much after the minecraft and QR code phaze, so maybe you can find something meaninful in this too.

Sorry for the gigantic images.