The shape of the system
The Office keeps one thing of its own: the record of what it assessed and what it decided. Everything else — the project, the contract, the money, the company — belongs to a system that already exists, and is read rather than copied.
Reading rather than copying has one consequence worth stating plainly: the Office never writes to any of these systems. It cannot correct a project record, cancel an award or release a payment. Where a decision needs to reach the procurement system, that is a separate agreed interface and the procurement system acts on it. The Office supplies the truth; it does not enforce it.
What the Office publishes
One thing, deliberately: a public check that a certificate is genuine. Given a certificate number it returns the status, the dates it is valid between, and the scope — the project, the entity, the value ceiling. It returns no reasons, no evidence and nobody's name. Confirming that a certificate is real should not require disclosing the file behind it, and an approving authority holding one has no account here.