In a document published on 10th Dec from the U.S. Patent and Trademark Office states that Nike wants to generate unique Ids and create ERC 721 tokens for some of its shoes. People will able to unlock the tokens by purchasing shoes and then can link the tokens with unique owner Ids to show the ownership. These shoes not only represent a digital shoe but through its token one can record the genotype information including specific attributes, colours, styles, and backgrounds.