Blockguard: Framework Para Implementação de Conformidade Lgpd Em Redes Hyperledger Fabric

This paper proposes BlockGuard, an umbrella framework for implementing Hyperledger Fabric-based blockchain networks in compliance with the Brazilian General Data Protection Law (LGPD), which was inspired by the European General Data Protection Regulation (GDPR). Through an exploratory and qualitative approach, a systematic mapping between LGPD requirements and Hyperledger Fabric functionalities was developed, identifying native mechanisms and necessary adaptations to ensure regulatory compliance. The BlockGuard framework is structured around five fundamental domains --- personal data lifecycle management, consent implementation, operationalization of data subject rights, security and governance structures, and compliance documentation --- providing technical guidelines to overcome inherent challenges, such as the conflict between immutability and the right to be forgotten. The framework includes a structured process mapping organized in five sequential and iterative phases, establishing a methodological approach for practical implementation. The results demonstrate that, with proper configurations, Hyperledger Fabric can not only meet LGPD requirements but also enhance data protection through its auditable transparency and decentralized control features, transforming potential regulatory obstacles into competitive advantages for organizations.