Computer programming of smart contracts on a blockchain; User authentication services using blockchain technology for identifying and authemticating transactions; Providing online non-downloadable software development tools for creating blockchain-based applications provided by a blockchain as a service (BAAS) provider; Providing online, non-downloadable software for data storage and certification using blockchain technology

Computer programming of smart contracts on a blockchain; User authentication services using blockchain technology for identifying and authemticating transactions; Providing online non-downloadable software development tools for creating blockchain-based applications provided by a blockchain as a service (BAAS) provider; Providing online, non-downloadable software for data storage and certification using blockchain technology