Providing an online marketplace for buyers and sellers of blockchain-based digital art items, toys, and pop culture collectibles authenticated by non-fungible tokens (NFTs); operating online marketplaces featuring cryptocurrencies, digital art collectibles, toy collectibles, and pop culture collectibles and blockchain-based digital art items, toys, and pop culture collectibles authenticated by non-fungible tokens (NFTs); Advertising services for third parties in the field of crypto-collectibl...