Browsing by Author "Sytnyk, Roman"

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    Data Flow Management in Information Systems Using Blockchain Technology
    (Dnipro University of Technology, Dnipro, 2024) Sytnyk, Roman; Hnatushenko, Viktoriia V.
    ENG: Purpose. Improving the process of information transfer for critical infrastructure sectors and enterprises through new approaches to real-time tracking of goods, services, and equipment, ensuring secure and transparent data integration and auditing of data flows in information systems using blockchain technologies. Methodology. This research moves away from traditional centralized data management systems based on SQL and no-SQL databases by implementing a decentralized, immutable system built on blockchain technology. This uses the principles of the Merle tree in a digital ledger within blockchain technology to verify data integrity and smart contracts to automate key data flow processes. By tracking goods and equipment through supply chains on the blockchain, this approach ensures product authenticity, provenance, and transparency in real time. In addition, it creates a secure and transparent audit trail for all data in the system compared to conventional centralized data management systems based on SQL and no-SQL databases. Findings. The developed blockchain-based approach improves data security, transparency, automation, and trust in managing data flows. Compared to traditional systems, it offers unique advantages such as immutability, decentralized management, and improved traceability. But while offering numerous advantages, blockchain also faces some limitations in terms of scalability and system complexity. Originality. Digital ledger and blockchain methods have been further developed in the context of designing information systems and data flow management systems based on blockchain algorithms in the context of Industry 4.0. This allows increasing data security, transparency, automation, and trust in data flow management. Practical value. The proposed approach is used to design information and data flow management systems based on blockchain algorithms. This improves the quality of data flow management in industrial enterprises and critical infrastructure, as well as supply chains.
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    Decentralized Information System for Supply Chain Management Using Blockchain
    (RWTH Aachen, Germany, 2022) Sytnyk, Roman; Hnatushenko, Viktoriia V.; Hnatushenko, Volodymyr V.
    ENG: Development of international and domestic trade, globalization, creation of longer and more complex supply chains, increase in sales of goods and similar trends lead to an increase in requirements and load on information systems that manage and monitor the shipments of goods, resources and products. The aim of this paper is to make improvements to the existing approaches of building and designing logistics information systems. The paper proposes usage of blockchain technology in order to simplify and make more transparent the processes of monitoring and managing the movement of products between different equal participants in logistics supply chain information systems. A prototype of the supply chain information system based on the use of blockchain technology and smart-contracts using a decentralized Ethereum virtual machine was developed and studied in comparison with traditional approaches.