BLOCKCHAIN: FROM CRYPTOCURRENCY TO USAGE IN DIFFERENT SPHERES.

The research relevance is determined by the growing use of blockchain technology in various industries and the need to address technical challenges and security and fraud issues. The research aims to analyse the application of blockchain technology in various fields and identify key technical challenges and opportunities for fraud prevention. The study results confirm the great potential of blockchain technology in addressing key aspects of security, transparency, and efficiency in various fields. Blockchain can significantly improve quality and business processes in industries such as healthcare, finance, and agriculture. Technical challenges related to the scalability and security of blockchain technology were also identi- fied. Particularly in industries where data volumes are large and processing largescale transactions requires increased scaling, performance and speed issues may arise. Additionally, insufficient security mechanisms can compromise data integrity and lead to misuse. Fraud issues were also identified as a significant threat that requires further research and development. The results of the study highlight the importance of further development and development of new algorithms and approaches to ensure scalability, improve security, and develop mechanisms for detecting and preventing fraud in the context of blockchain. [ABSTRACT FROM AUTHOR]