Some properties (orcid, viaf, etc) are isomorphic with dereferencable
URLs. That is these properties can be mapped to a canonical URI property
and back again and no information is lost.
For example my ORCID is 0000-0003-1809-1062 and that can be mapped to
and from the URI http://orcid.org/0000-0003-1809-1062
It seems to me that the orcid and viaf properties should be dropped from
bibframe, reducing the complexity of the vocabulary.
Library Technology Services http://www.victoria.ac.nz/library/