9 Downloadable virtual goods, namely, computer programs featuring digital collectibles in the nature of greeting cards, 3D renditions of sculptures, figurines, toys, trading cards created and traded using blockchain-based software technology and smart contracts and authenticated by non-fungible tokens (NFTs) for use in online virtual worlds; downloadable computer software for the production, automated and non-automated creation, and automated and non-automated modification of interactive media, video clips, photography, music, data, visual effects, digital files, digital collectibles, and crypto-collectibles and authenticated by non-fungible tokens on a blockchain network featuring or linking to digital or physical greeting cards, 3D renditions of sculptures, figurines, toys, trading cards for use in online environments, virtual online environments, extended reality virtual environments; downloadable computer programs for electronically trading, storing, sending, receiving, accepting and transmitting of interactive media, video clips, photography, music, data, visual effects, digital files, digital collectibles, crypto-collectibles and non-fungible tokens on a blockchain network featuring or linking to digital or physical greeting cards, 3D renditions of sculptures, figurines, toys, trading cards and for use in online environments, virtual online environments, extended reality virtual environments; downloadable mobile software applications for authentication of ownership using blockchain-based software technology; downloadable mobile software applications for the purpose of product and document authentication and tracking, and brand monitoring and protection, to protect against counterfeiting, tampering, and diversion, and to ensure the integrity of genuine products and documents