Downloadable virtual goods, namely, computer programs related to jewelry, postcards, posters, photographs, photograph albums, books, magazines, purses, bags, furniture, towels, blankets, clothing, headwear, footwear, toys, games, homes, buildings, vehicles, food, and drink for use online and in online virtual worlds; downloadable music files authenticated by non-fungible tokens (NFTs); downloadable image files authenticated by non-fungible tokens (NFTs); downloadable video files authenticated by non-fungible tokens (NFTs); downloadable software for blockchain-based inventory management; downloadable computer software for managing and verifying currency transactions on a blockchain; downloadable computer software for accessing, reading, and tracking information in the field of financial transactions, music, dance, entertainment, entertainment collectibles, musical bands, musical videos, movies, culture, and current events on a blockchain; downloadable software for virtual money; downloadable software for cryptocurrency; downloadable cryptographic keys for receiving and spending cryptocurrency