Data encryption services; Designing and creating web sites for others; Platform as a service (PAAS) featuring computer software platforms for use in database management, for use as a spreadsheet, for word processing; Providing online non-downloadable software development tools for creating blockchain-based applications provided by a blockchain as a service (BAAS) provider; Rental of smart glasses; Software as a service (SAAS) services featuring software for collecting, verifying, and transmitting data and information for use in blockchain-based smart contracts; Software design and development; User authentication services using blockchain technology for cryptocurrency transactions, online software applications; User authentication services using single sign-on technology for online software applications; User authentication services using technology for e-commerce transactions; Web site design