  The economic bubble bursting resulted in a large number of non-performing
loans in Japanese financial institutions, which weakened their functions and
prevented them from extending credit for normal economic activities. However,
cryptocurrency operations are thriving in Japan. In this way, this paper
focuses on non-performing assets and cryptocurrencies. The goal is to use
literature analysis methods to summarise the development process, types of
issuance, mechanisms, evaluation models, application scenarios, and trends in
how cryptocurrencies are supervised.
