Compiling indexes of information using blockchain technology; Conducting virtual trade show exhibitions online in the field of nonfungible tokens (NFTs) and digital collectibles; Inventory management; Inventory management in the field of nonfungible tokens (NFTs); Operating on-line marketplaces featuring nonfungible tokens (NFTs); Operating on-line marketplaces for sellers and buyers of goods and/or services; Providing a website for users with specific informed recommendations of specific con...