According to ChainCatcher, Kim Nam-guk, a former member of the Democratic Party of Korea, has been prosecuted without detention for holding a large amount of cryptocurrency, which has caused controversy. The Financial Investigation 1st Division of the Southern District Prosecutors' Office in Seoul filed a non-detention prosecution against him for obstructing the performance of official duties.

Kim Nam-guk was accused of concealing huge profits from virtual asset investments when declaring the assets of members of Congress in 2021 and 2022, and obstructing the review of property changes of congressional officials by adjusting bank account deposits and virtual assets.