Providing on-line non-downloadable software for use in the field of cryptocurrency trading and exchange via decentralized exchanges (DEXs); Providing on-line non-downloadable software for managing and verifying cryptocurrency transactions on a blockchain; Providing on-line non-downloadable software for buying, selling, sending, receiving, exchanging, and transacting cryptocurrency, crypto tokens, digital currency, virtual currency, blockchain enabled currency, and related assets; Providing on...