With just a week left until the registration deadline for cryptocurrency exchanges, financial authorities have again asked users of exchanges likely to shut down to withdraw their deposits and assets early. 

The Financial Services Commission(FSC) and the Financial Supervisory Service(FSS) said customers must check whether the exchange they are using has registered, and if not, plans to suspend or close business.

If the status is unclear, authorities say it is best to veer on the side of caution and withdraw their assets -- otherwise, it could be difficult or time-consuming to retrieve the funds as lawsuits may need to be filed.

Under a financial transaction information law, cryptocurrency exchanges are required to file a report to the Korea Financial Intelligence Unit by next Friday with all necessary conditions met, including real-name bank accounts. 

Exchanges failing to meet the conditions must inform their users at least a week in advance and suspend their business from September 25. Currently, only four exchanges -- Bithumb, Upbit, Coinone and Korbit -- have completed registration.