The current research in to the Digimarc currency watermark has determined an absolute minimal test case [1], however no one has discovered the exact watermarkin

The current research in to the Digimarc currency watermark has determined an absolute minimal test case [1], however no one has discovered the exact watermarking mechanism. I was speaking in absolutes because we can't do a copy attack without knowing what features to extract. Someone has enumerated all the detected regions on the 20 pound note [2] if you'd like to take a stab at it! 1. https://murdoch.is/projects/currency/cropped.png https://murdoch.is/projects/currency/cropped.png 2. https://murdoch.is/projects/currency/small_crops.png https://murdoch.is/projects/currency/small_crops.png