An authenticated digital confirmation of an installation or an update of a licensed computer data product, for providing the licensor with a validation that the installation/update was carried out as intended, and conveying relevant details of the installation/update. The installation/updating facility (internal software, external hardware device, or combination thereof) examines and documents the pre-installation/update state of the target computer system, performs the installation/update, examines and documents the post-installation/update state, and generates the confirmation, which is a summary or digest of the process and the status thereof. The confirmation is securely authenticated and sent to the licensor for validation, to be used for order fulfillment, billing and accounting, and other purposes.