Crossref

Publishers' association launched in early 2000 to link citations across journals with DOIs; the largest DOI registration agency for scholarly work. [?]

Visit the website ↗ crossref.org

contributed to

• DOI standard 2000 [src]
  DOI registration agency for scholarly literature

[?] Unconfirmed

• description: 'Largest' is a summary; Wikipedia calls it a major registration agency.

Sources

• https://en.wikipedia.org/wiki/Crossref