Provenance
Provenance is the verifiable record of where knowledge and capability came from. It lets a claim be trusted rather than merely asserted. Where machines synthesise answers from many sources, it is the scarce and valuable thing.
When a person read a page, they judged its credibility from context. The domain, the design, the byline. An agent assembling an answer from a dozen origins has no such luxury and no patience for it. It needs the source as data, who said this, from what and when, attached to the claim itself, in a form it can follow and cite. Provenance makes the source first-class.
Provenance by default means every projection carries its lineage. The JSON, the HTML and the agent's cited answer all trace to the same origin and the same version. Nothing is published as authoritative without a traceable path back to what substantiates it. A definition, an implementation, a piece of research. Versioning is part of this. A claim is not just from Heliacon but from this entry, at this version, so that when the truth is revised, older citations stay honest about what they cited.
This is the difference between an origin that can be cited and one that can only be scraped. Scraping takes the words and loses the source. Citation preserves the link, and the link is where the value and the trust live. Citability, compounded over time, is a moat a competitor copying your pages cannot take, because they cannot copy being the source.
Provenance is also where privacy and trust meet. An origin proves the lineage of what it publishes while disclosing nothing it should not. Who said it, from what and when, and no more.