Brazil’s central bank will require crypto exchanges to delay some customer transfers to foreign platforms and self-custody wallets for up to 24 hours as part of new anti-fraud rules. Transfers exceeding the equivalent of $10,000, whether through a single transaction or several on the same day, are subject to the required hold. The central bank said cryptocurrencies, including stablecoins, are being used to move funds obtained through financial fraud before victims or institutions can recover them. Exchanges can release a transfer before 24 hours if their risk review finds no signs of wrongdoing. The measure also gives exchanges more responsibility for judging risk based on the customer, transaction, counterparty and destination jurisdiction.