42 Providing authentication services for various assets, works of art, footwear, digital assets, and luxury items affixed with distributed ledger technology enabled near-field communication tags; authentication of data in the field of collectibles and luxury goods using distributed ledger technology; software as a service (SAAS) services featuring software for authenticating non-fungible tokens and non-fungible assets, works of art, footwear, digital assets, and luxury items using distributed ledger technology; platform as a services (PAAS) services featuring computer software platforms for users to buy, sell, and authenticate collectibles, non-fungible tokens and non-fungible assets, works of art, footwear, digital assets, and other items which may be affixed with near-field communication tags; providing a website featuring technology which provides users with the ability to access databases for purposes of identifying the owner and verifying the authenticity of non-fungible tokens and non-fungible assets, works of art, footwear, digital assets, and luxury items; computer services, namely, designing and implementing websites for others