Fecha de publicación: -- Fuente: Wipo "digitalization" In embodiments of the present invention, systems are provided for tracking a set of secure digital tokens, each of which uniquely represents an item, including an interface configured to handle a set of unique identifiers, a cryptographic token generation system that generates a set of unique digital tokens, each of the set of unique digital tokens including a set of digital attributes that correspond to the set of item attributes, a cryptographic linking system configured to generate a cryptographically secure, one-to-at-least-one link between the unique digital token generated by the cryptographic token generation system and the unique identifier for the unique unit of the item, and an escrow system configured to handle the items that are represented by the set of unique digital tokens pending redemption of a respective one or more unique digital tokens from the set of unique digital tokens.