All serial numbers are on the product box. Fact: The box has a matching SN, but the box is not proof of ownership. The physical product is.

If you want, I can:

Because this string identifies a specific item rather than a general product model, I cannot generate a review of the item's features without knowing what the product actually is.

POST /serial-number/verify HTTP/1.1 Content-Type: application/json

would be remembered not as a machine, but as a poet of the stars. for this serial number?