Mastering National Registry & CPF Validation in Brazil
Blog post from Didit
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Brazil’s identity verification environment relies heavily on National Registry identifiers, including RG for citizens and RNE for foreigners, alongside the CPF taxpayer number, making accurate validation essential for regulatory compliance, fraud prevention, and risk management. The material describes 1x1 matching as verification of one identifier against authoritative sources and 2x2 matching as validation of two data points for greater assurance, with both approaches using sequential database checks to improve match coverage. It also emphasizes configurable workflows that can automatically decline, flag for review, or reattempt cases involving partial matches, no matches, or missing information. Didit is presented as an AI-native, modular identity verification platform offering National Registry and CPF validation, free core KYC without setup fees, and additional tools such as document verification, liveness detection, AML screening, and proof-of-address checks.
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