9 Digital media, namely, downloadable multimedia files featuring collectible artistic works in the nature of artwork and photographs, visual graphic works in the nature of comic books, and image files containing advertising logos of others, photographs of famous people, painting, and memes, all of the foregoing authenticated by non-fungible tokens (NFTs); Digital media, namely, downloadable multimedia files featuring image files containing characters from video games, cartoons, graphic novels, comic books, and movies, all of the foregoing authenticated by non-fungible tokens (NFTs); Downloadable image files containing collectible artistic works in the nature of artwork series and artwork featuring artistic characters from video games, cartoons, graphic novels, comic books, and movies, all of the foregoing authenticated by non-fungible tokens (NFTs); Downloadable image files containing visual graphic works in the nature of graphic novels and comic books, all of the foregoing authenticated by non-fungible tokens (NFTs); Downloadable image files containing collectible artistic works in the nature of artwork featuring advertising logos of others, and characters from video games, cartoons, graphic novels, comic books, and movies, all of the foregoing authenticated by non-fungible tokens (NFTs); Downloadable image files containing visual graphic works in the nature of advertising logos of others and artwork featuring brand mascots, all of the foregoing authenticated by non-fungible tokens (NFTs); Downloadable virtual goods, namely, computer programs featuring image files of clothing and clothing accessories, image files of non-playable characters and avatars, collectible artistic works in the nature of artwork and photographs featuring non-playable characters and avatars, visual graphic works in the nature of graphic novels and comic books, cartoons, and image files containing trading cards and memes, all of the foregoing authenticated by non-fungible tokens (NFTs) and for use in online virtual worlds; Downloadable computer software for managing and verifying cryptocurrency transactions on a blockchain; Downloadable computer software for managing cryptocurrency transactions using blockchain technology; Downloadable software for blockchain-based inventory management