Administration of consumer loyalty programs to promote the sale of digital art images, music and sound files, and video files authenticated by non-fungible tokens (NFTs) by others; Business management services for others in connection with transactions for the sale of digital art images, music and sound files, and video files authenticated by non-fungible tokens (NFTs) transactions and promotions; business monitoring and consulting services, namely, tracking transactions for the sale of digital art images, music and sound files, and video files authenticated by non-fungible tokens (NFTs) of others to provide strategy, insight, marketing, sales, operation, product design, particularly specializing in the use of analytic and statistic models for the understanding and predicting of consumers, businesses, and market trends and actions; Negotiation of business contracts for others in the field of non-fungible tokens (NFTs)