The Seoul Customs Office noted that four of them are still under investigation and will be soon prosecuted or fined.
The crypto exchange is also required to register its business under the new rulings imposed by the South Korean watchdog.
Several crypto exchanges recently dropped low-volume tokens and issued warnings against dozens.
Hwang Byung-gwang was praised due to his investigative skills in finding millions of dollars of undisclosed cryptocurrencies.
Authorities said that a TV personality and a doctor were among the tax dodgers caught in the crackdown.
The subsidiary will be led by the former head of the Hancom MDS software development arm.
Exchanges are also adding dozens of minor tokens to warning lists.
The financial watchdog originally set a deadline until early July to implement the new anti-money laundering rulings.
All crypto exchanges in the country need to apply for a license with the FSC before September 24.
A crackdown was conducted in 2018 on companies who were engaged in the illicit use of energy to mine virtual currencies.
The Financial Service Commission (FSC) has also been confirmed as the top government body to regulate cryptos.
The central bank governor pledged to monitor crypto-related transactions in the country.
Digital won's pilot will be split by the Bank of Korea into two stages starting August 2021.
The country's top financial regulator warns that they cannot protect cryptocurrency users from volatility.
One of the banking officials surveyed believes other financial holdings might have a similar stance.
The local authorities blocked 32 phishing websites in the last three months.
The regulators are trying to identify all crypto exchanges operating in the country.
Many local crypto operations in the country are on the verge of shutting down.
The city government has seized $22 million in digital currencies.
The authorities are planning to eliminate the use of cryptocurrencies in money laundering.
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