42 Electronic storage of cryptocurrency for others; Providing a web site featuring temporary use of non-downloadable software for cryptocurrency, digital currency exchanges, and digital natural resources exchanges; Providing a website featuring non-downloadable software for cryptocurrency, digital currency exchanges, and digital natural resources exchanges; Providing a website featuring technology that enables users to generate printable cryptocurrency wallets; Providing on-line non-downloadable software for generating cryptographic keys for receiving and spending cryptocurrency; Providing on-line non-downloadable software for cryptocurrency, digital currency exchanges, and digital natural resources exchanges; Providing on-line non-downloadable computer software for use as a cryptocurrency wallet; Providing technology information in the field of cryptocurrency; Providing temporary use of non-downloadable cloud-based software for cryptocurrency, digital currency exchanges, and digital natural resources exchanges; Providing temporary use of a web-based software application for cryptocurrency, digital currency exchanges, and digital natural resources exchanges; Providing temporary use of a non-downloadable web application for cryptocurrency, digital currency exchanges, and digital natural resources exchanges; Providing temporary use of online, non-downloadable enterprise software for cryptocurrency, digital currency exchanges, and digital natural resources exchanges; Providing user authentication services using blockchain-based software technology for cryptocurrency transactions; Software as a service (SAAS) services featuring software for cryptocurrency, digital currency exchanges, and digital natural resources exchanges; Technological consulting in the field of cryptocurrency