digimarkup
No user record in our sample, but digimarkup has activity below (stories or comments). Likely we have partial data — the full bulk-load will fill profiles in.
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Background: http://www.cl.cam.ac.uk/~sjm217/projects/currency/ I'm working on a project where I think it would be interesting to make it take more effort for people to scan/copy/photoshop the images and documents…