The requirement by Brazil’s central bank goes into effect Jan. 1, according to a resolution published Friday (Aug. 7) and flagged in a report by CoinDesk.

According to the report, the rules cover deposits made in Brazilian reais, or crypto with an exchange, that a user wants to send abroad or to a wallet they control.

The hold applies to transfers exceeding $10,000, whether that means a sole transaction or multiple transfers in one day. Smaller transfers that exchanges consider risky could also be delayed.

The move is in response to criminals using cryptocurrencies such as stablecoins to move money obtained via fraud…