sameAs

The sameAs field is an important disambiguation signal. Schema.org defines it as the URL of a reference page that unambiguously indicates an item's identity.

Suitable targets are official profiles, for example a LinkedIn company profile, official YouTube, GitHub, X or Facebook profiles, a legitimate Wikidata entry, and relevant industry or marketplace profiles.

Not suitable are:

• private profiles or unofficial fan pages,
• outdated or inconsistently named profiles,
• purchased low-quality directory entries,
• third-party brand profiles,
• artificial or unverifiable wiki entries.

The rule is: use sameAs only for profiles that genuinely confirm the same entityAn entity is a uniquely identifiable thing or concept, such as an organisation, person, brand, product, place or technical term. Search engines and AI systems process information as entities and their relationships.Open glossary entry →. False or invented profiles weaken identity clarity rather than strengthening it.