This study analyzes the impact of a newly emerging type of anti-money laundering regulation that obligates cryptocurrency exchanges to report suspicious transactions to financial authorities. We build a theoretical model for the reporting decision structure of a private bank or cryptocurrency...

This study suggests a payment portfolio model that includes new payment methods that have emerged from the development of cryptocurrency markets and central bank digital currencies (CBDCs). Our model analyzes the optimal payment choice for consumers under various macroeconomic conditions. We...

This study suggests a portfolio theory encompassing various payment methods that are newly emerging as the development of the cryptocurrency market and central bank digital currencies (CBDCs) accelerates. We determine the payment methods chosen by an individual under given conditions by...

Environmental, social, and governance (ESG) activities have recently become a widely discussed topic, but clear strategies on whether firms should focus on concentrating or reducing their ESG activities have not been developed. This study develops a strategic approach to ESG investments, which...