Virtual currencies; Digital virtual currencies; Non-fungible tokens (NFTs); Downloadable multimedia file containing artwork authenticated by non-fungible tokens (NFTs); downloadable software for generating non-fungible tokens (NFTs) used with blockchain technology; digital media with blockchain technology for representing a collectible item; downloadable software for generating crypto-collectibles and non-fungible tokens (NFTs); digital collectibles created with blockchain-based software technology and smart contracts; digital collectibles created with blockchain-based software in the nature of art, photos, images, videos, and audio recordings; downloadable digital art files; downloadable graphic art reproductions; video games; electronic game programs; electronic game software; mobile games; downloadable games for use on mobile phones; trading cards; collectible trading cards