BrightGov does not restate information without provenance. Each entry names the issuing body, the publication date, the formal reference and what has been checked — so that provenance is legible without becoming dense.
Civic Open Data Lab
Provenance records for 96 public datasets mirrored from regional bodies.
Index of 212 contracts above the lowered disclosure threshold, with award dates and supplier identifiers.
Line-level arrival deviation for 1.2M scheduled services, published under an open licence.