The benchmark dataset for this whole register. Transaction-level, downloadable, covering every federal agency on a common schema.

Its existence is the strongest available answer to the claim that transaction-level spending cannot be published. It has been published federally for years. The question every other body has to answer is why not them.

The known weakness is amendments: a contract that grows through variations is harder to follow than one figure suggests, which is why How often is a government contract extended or varied without going back to market? is recorded as derived rather than yes.