What supports a statement
Source evidence is the document or record supporting a particular statement. An observed fact says what the source reports; verification means a recheck only where explicitly recorded. An inference must remain labeled as an inference and must not become a verified relationship by repetition. Public employment or investment evidence is distinct from customer-private interaction context. A customer note can support what that customer recorded; it does not independently verify a public claim or grant redistribution rights. When evidence is missing or contradictory, retain the unknown and the limitation. Access to a document does not by itself establish permission to include it in a paid result. Licensed sources and organization submissions keep their source type; a restricted source URL may remain null. Source labels never grant redistribution rights.Evidence source types
Role dates and validity
A person’s recorded employment start/end dates can describe that role’s history at the source’s precision. They are distinct from a capture, observation or verification timestamp. Generic relationship valid_from / valid_to fields are not part of this public contract. A database history field or page modification date must not become a customer-visible validity claim.Date semantics
The descriptive evidence JSON uses published_at, captured_at, observed_at and verified_at for the same meanings. Every field does not have every date. Date-only evidence stays in its source note; never invent a timestamp.