Source hierarchy
Official sources are used where available. When official sources conflict, the record keeps the competing wording and carries an Official sources differ label. Secondary material remains visibly labelled and is not upgraded by presentation.
Verification and updates
Each record retains its source IDs, source links, access dates and a last-verification date. An update changes the public record only when its supporting source set is also updated.
Handling conflicting official sources
PumpCurrent does not choose a preferred capacity or date merely to simplify a page. Conflicting official statements appear together with a note explaining the boundary.
Fact and analysis separation
Verified facts repeat only what the cited source supports. PumpCurrent analysis is explicitly labelled as interpretation. Unknown contractors, consultants, brands, packages and procurement timing remain unconfirmed.
Corrections
Material factual corrections should identify the affected statement, update the source record and verification date, and preserve a clear change history in the operating workflow.