9 Downloadable image files containing trading cards, artwork, memes, sneakers, artists, avatars, and fashion authenticated by non-fungible tokens (NFTs); downloadable movie files relating to games, arts, comics, cartoons, sports and toys, artists, avatars, and fashion authenticated by non-fungible tokens (NFTs); downloadable multimedia files containing artwork, text, audio, and video relating to games, arts, comics, cartoons, sports and toys, artists, avatars, and fashion authenticated by non-fungible tokens (NFTs); downloadable music files authenticated by nonfungible tokens (NFTs); downloadable image, audio and video recordings featuring sports highlights, movie clips, memes authenticated by non-fungible tokens (NFTs); downloadable multimedia file containing artwork, text, audio, and video relating to sports highlights, movie clips, memes authenticated by non-fungible tokens (NFTs); downloadable computer software for managing crypto currency transactions using block chain technology; downloadable computer software for managing and validating crypto currency transactions using block chain-based smart contracts; downloadable computer software for accessing, reading, and tracking information in the field of financial transactions on a block chain; downloadable software for receiving and accessing digital goods authenticated by non-fungible tokens; downloadable software for spending and trading digital goods authenticated by non-fungible tokens; downloadable computer software for block chain data mining; downloadable computer software for cross block chain transfers; downloadable computer software for interacting with block chain platforms; computer hardware for blockchain technology; downloadable software for developing, building, and operating block chain technology; downloadable computer software for developing, building, and operating block chain mobile applications and wallets; downloadable computer software for developing, building, and operating block chain technology and crypto currency; downloadable computer software for aiding the development of block chain-based applications; downloadable computer software for developing, building, and operating consumer block chain applications; downloadable cryptographic keys for receiving and spending crypto currency