- official-source
- Published by the named public authority, utility, standards body or rights-holding organization as its own record.
- proponent-reported
- Stated by a project proponent, owner or operator without independent verification.
- independently-verified
- Confirmed by a second, named, independent public record. Verification covers the cited fact, not the whole project.
- third-party-estimate
- A modelled, projected or calculated figure from a party other than the proponent. Method and vintage travel with the number.
- awaiting-confirmation
- A value has been reported and a confirmation request or check is open. Not yet verified, not yet disputed.
- not-publicly-disclosed
- The field is in scope and the public record does not contain it. Absence is shown as absence, never as zero.
- disputed
- Cited sources conflict or a credible public challenge exists. Both sides stay recorded.
- superseded
- A later official instrument, edition or observation replaces this value for the cited point. The old value stays in history.
- retracted
- The project withdrew this value or record via a published correction. A labelled tombstone remains.
- not-applicable
- The field does not apply to this record. Distinct from unknown and from not disclosed.
Every public value keeps its source ID, effective period, retrieval date, review date and verification state as separate fields. They are never collapsed into one unexplained confidence score.