Provenance answers a set of questions that ordinary web pages often leave implicit: Where did this information come from? Who created or supplied it? Was it derived from another source? Has it been revised? What activity produced it? Which person or organization is responsible for it? Those questions become increasingly important as information is copied, summarized, generated, syndicated, and republished across many systems.
The W3C PROV family of standards formalizes provenance using entities, activities, and agents. It includes relationships for attribution, derivation, primary sources, revisions, and responsibility. The technical standard is broader than a business website, but the underlying concept translates cleanly: a public claim should not lose its history simply because it has been transformed into a page.
In an authority system, provenance can be lightweight or detailed depending on the material. An office-hours fact may need an owner, source, and update date. A practitioner article may need author identity, interview date, source documents, reviewer, and revision history. A credential may need the issuing body and verification source. The appropriate amount of provenance depends on the consequence of getting the fact wrong.
Provenance also helps maintain old material honestly. If a standard changes, the article does not need to pretend the earlier version never existed. The record can show what was published, the source used at that time, and the later revision. This protects historical truth while keeping current information current.
Online authority without provenance can become a collection of confident statements. Online authority with provenance becomes a record that can be examined, maintained, and corrected.