Marketing, advertising and promotion services; business information; provision of market research and information services; promoting the goods and services of others via computer and communication networks; business and advertising services; market intelligence services; facilitating the exchange and sale of services and products of third parties via computer and communication networks; providing online marketplaces for sellers of goods and/or services; providing online facilities for connecting sellers with buyers; providing a website featuring an online marketplace for selling and trading virtual goods with other users; online trading services; arranging and conducting special events for commercial, promotional or advertising purposes; arranging and conducting special events for business purposes; blockchain as a service, namely, business advice and information in the field of blockchain technology