Legacy material ids
In principle, we should be able to assign old material ids to new material ids based on the material hash. The material hash should not have changed, or could simply be recomputed for entries in the old encyclopedia database.
Having the old ids, e.g. a metadata legacy_id
, would allow us to have canonic redirects from the old to the new encyclopedia for material urls.
We could also work with Martins old data, if he does not manage to produce new one.