The Banco Central do Brasil (BCB) has introduced a regulatory proposal that could significantly slow down the country's high-speed digital asset market. The draft rule requires Virtual Asset Service Providers (VASPs) to implement a preventive retention of up to 24 hours on outbound cryptocurrency and stablecoin transfers valued at $10,000 USD or more. The restriction specifically targets transactions destined for self-custody wallets or foreign accounts. This regulatory friction arrives at a critical juncture for the Brazilian fintech sector, as local investors navigate a shifting macroeconomic landscape marked by high Brazil interest rates Selic and persistent inflation.