Object-Oriented Analysis and Design of a Decentralized Information System for Generating an Athlete’s Passport Using Blockchain

This article presents the problem of maintaining and storing a digital profile of an athlete. The project about of a decentralized system using blockchain technology is proposed. Blockchain is a sequence blocks of information arranged according to certain rules. Blockchain technology has enormous potential to transform the system of creating and storing information about athletes. The use of distributed registry systems can become a real breakthrough in the field of physical culture and sports in the context of safety, accessibility and transparency of information, ensuring trust between participants in the sports industry, and reducing the time spent on information processing. The project about of a decentralized system is an instrument that simplifies the interaction of all participants in the field of physical culture and sports, and the use of blockchain technology at the heart of the applications guarantees the uninterrupted and accurate operation of the system. This article presents modeling of the athlete passport system in accordance with the object-oriented approach. A conceptual model for the formation of a athlete’s passport using the Unified Model Language has been developed. The main actors of the system are identified, a use case diagram is built, showing the functions and interactions of the main actors of the system, a simplified class diagram model is built to demonstrate the structure and hierarchy of the system classes, their cooperation, fields, methods, interfaces and relationships between them. As part of the discussion of the results obtained, both the advantages and disadvantages of using blockchain are shown, which are associated primarily with the technological and financial components, legal regulation plays a secondary role in this case, but does not exclude the regulation of issues related to the legal validity of records in the blockchain and other types of distributed data registries, as well as the spread of applications for creating information systems.