DEVELOPMENT OF A METHOD FOR ENSURING THE RELIABILITY AND SECURITY OF PERSONAL DATA IN BLOCKCHAIN SYSTEMS OF STATE REGISTERS
Valeriia Balatska, Vasyl Poberezhnyk, Артем Стефанків, Yu.A. Shevchuk · Komp'ûternì sistemi ta merežì · 2025
The article considers the problem of ensuring the reliability and security of personal data processed in state registers by using blockchain technologies. The growing requirements for transparency and stability of state data management systems pose new challenges to protecting information from unauthorized changes, interference, and forgery. A method based on implementing a decentralized blockchain architecture is proposed to ensure data integrity, traceability, and transparency during processing and storage. The basis of the developed method is the use of a distributed registry, which ensures the immutability of the entered information thanks to the mechanism of blockchains that link transactions and changes in data in chronological order. Smart contracts are used to automate the processes of entering, updating, and verifying data in state registers, which reduces the likelihood of the human factor and ensures trust between all participants in the system. The proposed method increases state registers' resistance to external threats, internal errors, and unauthorized changes due to the transparency and decentralization inherent in blockchain technologies. The practical implementation of the method demonstrated an improvement in the level of security of personal data and the efficiency of the functioning of registration systems using the example of modeling a blockchain register. Keywords: blockchain, data reliability, state registers, decentralization, information security, smart contracts, distributed register.