Electronic storage of cryptocurrency for others; providing information featuring technology that enables users to generate printable cryptocurrency wallets via a website; providing on-line non-downloadable computer software for use as a cryptocurrency wallet; providing on-line non-downloadable software for generating cryptographic keys for receiving and spending cryptocurrency; providing temporary use of non-downloadable web-based decentralized applications (DApps) for cryptocurrency trading, cryptocurrency transactions and cryptocurrency payments; providing temporary use of non-downloadable web-based decentralized applications (DApps) for cryptocurrency trading and cryptocurrency transactions to fund projects; providing user authentication services using blockchain-based software technology for cryptocurrency transactions.