Abstract: A system and method for determining authenticity and authorized possessorship of an item that includes operations of determining a watermark comprised of one or more variations of a set of characteristics integrated into composition of the item, requesting confirmation of authenticity from an authenticity verification service that the determined watermark corresponds to an authentic, registered item, and, in response to the request for confirmation of authenticity, receiving an indication of authenticity of the item and an indication of possessor ship based at least in part on the determined watermark. Further including a system and method for obtaining a blueprint for producing the item, determining the watermark for the item, producing the item with the watermark according to the blueprint, and registering the watermark and at least one authorized possessor of the item with the authenticity verification service of a computing resource service provider.