The official word on all EBS certifications is the Certifications database on My Oracle Support (MOS):
Since I announce all of my team's certifications here on this blog, I've also created a one-page summary of all blog articles covering EBS technology stack certifications. This summary page is maintained manually, so if there's any gap between the MOS Certifications database and this summary, the Certifications database wins.
Our blogging engine has changed multiple times over the years, so the URL for the Certifications summary has also changed periodically. The Certifications summary lives here now - update your bookmarks:
You can also navigate to it from this blog's home page by clicking on the "Check Your Certifications" button: