Provision of an online marketplace for buyers and sellers of downloadable digital goods and media authenticated by non-fungible tokens (NFTs); promoting the goods and services of others by means of coupons, discounts, advertisements, rewards, incentives and loyalty programs in the metaverse and other virtual worlds, generated in connection with the use of credit and debit cards; promoting the cultural events, charitable events, sporting events, travel experiences, fine dining events, festivals, award shows, and special events of others in the metaverse and other virtual worlds