South Korea’s four major cryptocurrency exchanges—Bithumb, Upbit, Korbit, and CoinOne—have allied against money laundering.

In a joint press release, they said the four exchanges had established a hotline among officers to share information on tradings suspected of money laundering, voice phishing, crime financing and frauds related with lending. They would share cyberwallet addresses suspected of money laundering.

They invited the other exchanges to join in their joint anti-money laundering drive.