What changed
This page is the site’s freshness engine: whenever an observed figure moves or a new award enters a product’s file, it is listed here with the date. Figures do not change silently — each product page also carries its own change history.
No figure has moved since this page set was first published. That is the expected state on a first build: the change history fills in as the pipeline runs again. The Atom feed carries the same list.
How a change is detected
The pipeline re-runs the ingest, match and evidence stages against fresh USAspending data.
The new evidence.json is diffed against the last published data: any change to
the lowest or highest observed amount, the award count, or the set of award IDs becomes an
entry here. Nothing is written by hand, and a figure that did not move produces no entry.