Providing temporary use of on-line non-downloadable software for accessing and tracking information about the trustworthiness and reputation of computer users on a blockchain; providing on-line non-downloadable software for calculating, reporting, and displaying statistics about the reputation of users; providing on-line non-downloadable software that provides reputational information about computer users based on data from the user's activity and third-party input; providing on-line non-downloadable software in the nature of a decentralized reputation protocol for use in consumer applications, cryptocurrency exchanges, social media networks, online communities, and digital marketplaces to aid users in making informed decisions when interacting with goods, software, applications, digital content, and other users; providing on-line non-downloadable software for the collection, editing, organizing, modifying, transmission, storage, and sharing of data and information; computer services in the nature of decentralized reputation protocol that uses blockchain technology to track users and user interactions to create trust and transparency among users; design and development of software; providing online non-downloadable software development tools for creating decentralized reputation systems