2022-03-24 | Resolução Conjunta 4The Central Bank of Brazil and the National Monetary Council issued Joint Resolution No. 4 to officially rename the 'Open Financial System' as 'Open Finance' and amend Joint Resolution No. 1 of 2020. The resolution mandates standardized data and service sharing among financial institutions, defines participant obligations, and establishes governance, monitoring, and partnership frameworks. It also specifies the scope of shared data, reciprocity principles, and the regulatory requirements for implementing the Open Finance ecosystem.