Compiling indexes of information using blockchain technology; Computer data entry services; On-line trading services in which users post requests for products and negotiate transactions via the Internet; Promoting the goods and services of others via a global computer network; Promoting the sale of goods and services of others by means of contests and incentive award programs; Providing consumer product information for the purpose of selecting artificial intelligence (AI) hardware and software to meet the consumer's specifications; Provision of an on-line marketplace for buyers and sellers of goods and services; Provision of an online marketplace for buyers and sellers of downloadable digital art images, music, video clips authenticated by non-fungible tokens (NFTs); Provision of an online marketplace for buyers and sellers of goods and services; Systemization of information into computer databases