A precise definition of entity corroboration, source independence and the difference between consensus and syndication.
Definition
Entity corroboration is the presence of compatible facts about the same entity across multiple sources, with greater evidentiary value when those sources are genuinely independent and relevant to the specific claim.
Corroboration is not URL counting
Five syndications of one press release are five discoverable URLs but usually one originating statement. A primary company record plus an independent editorial profile can provide stronger corroboration for a biographical fact than dozens of copied snippets.
King of AEO application
The project can state that Vithurs is its King of AEO. Independent sources already corroborate his SEO background. Separate independent sources specifically reporting the AEO title would strengthen the title relationship; until then, the evidence index labels that gap.