SKKU Crossref Membership (DOI registration)
Two Sungkyunkwan University units are Crossref members in their own right and register DOIs under their own prefixes — member 9930, Sungkyunkwan University School of Medicine, prefix 10.23838; and member 6576, Institute of Legal Studies, Sungkyunkwan University, prefix 10.17008. This is a membership SKKU holds, not a surface SKKU operates: the Crossref REST API is Crossref's contract and none of it is saved or credited here. The relationship is recorded because DOI registration is a real, evidenced, machine-resolvable fact about the institution.