# SKKU Crossref Membership (DOI registration)

**Canonical:** https://apis.io/apis/skku/crossref-membership/  
**Provider:** Sungkyunkwan University — https://apis.io/providers/skku/  
**Base URL:** https://api.crossref.org/members/9930  
**Documentation:** https://www.crossref.org/

SKKU Crossref Membership (DOI registration) is one of 6 APIs that [Sungkyunkwan University](https://apis.io/providers/skku/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include DOI, Crossref, Registry, Persistent Identifiers, and Scholarly Publishing. The published artifact set on APIs.io includes API documentation.

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.

## Machine-readable artifacts (2)

- **Conformance** — https://raw.githubusercontent.com/api-evangelist/skku/refs/heads/main/conformance/skku-conformance.yml
- **Documentation** — https://api.crossref.org/members/9930

## Other Sungkyunkwan University APIs (5)

- [SKKU SAML 2.0 Identity Provider (KAFE / eduGAIN metadata)](https://apis.io/apis/skku/identity-federation/)
- [SKKU Research Portal (Elsevier Pure) — TENANT](https://apis.io/apis/skku/pure-research-portal/)
- [SKKU dCollection Thesis Repository (KERIS) — TENANT](https://apis.io/apis/skku/dcollection-repository/)
- [SKKU ROR Registration (organization identifier)](https://apis.io/apis/skku/ror-registration/)
- [Kingo Portal (campus SSO and gated student systems)](https://apis.io/apis/skku/kingo-portal/)

## Tags

DOI, Crossref, Registry, Persistent Identifiers, Scholarly Publishing

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/skku/crossref-membership/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/skku/.