Hashing the OpenCare dataset at sunset

As per our data management plan, we publish the raw OpenCare dataset on Zenodo. In the light of the GDPR, @markomanka and I agreed that it would be a good idea to pseudonymize the updated dataset before we publish it for the second and final time. Handles on Edgeryders are not “pseudonymous enough”. Question to @markomanka: are edgeryders user IDs good enough?

In case they are not: in practice, this will be a bunch of JSON files. @matthias, do you have suggestions?