Authorship, provenance, freshness
A byline string asserts nothing a machine can check. A resolvable entity with credentials does, and so does a date that only moves when the content moves.
What it measures
Whether authors resolve to real, credentialed entities rather than names. Whether substantive pages are signed, and whether the author property is a reference to an identifier rather than a repeated string. Whether published and modified dates are internally consistent and stable across a deploy that changed nothing. On sites that warrant them, whether expert review and primary-source citations reach the markup.
How this site handles it
Every page here is signed, visibly and in the schema, and the author property is a reference to one Person node rather than a name repeated ten times. That person carries a job title, an affiliation, subjects they work in, and an ORCID — an identifier somebody else had to grant. Dates come from the content, not the build, and the sitemap agrees with the page.
Weight
12 of the hundred points, across 6 tests. The full definitions are in the open standard.