This study investigates the potential of blockchain technology to support compliance with the General Data Protection Regulation (GDPR). By integrating blockchain's core features, such as transparency, immutability, and data encryption, with GDPR principles like data minimization and accuracy, the research develops a comprehensive applicability model. This model serves as a Reference Framework for evaluating blockchain systems' alignment with GDPR requirements. The study employs a meta-synthesis method and qualitative content analysis of 67 articles, culminating in a detailed examination of 31 selected articles. The findings reveal that blockchain technology can significantly enhance GDPR compliance, particularly in securing personal data and ensuring transparency. Importantly, the research introduces a novel model validated by a panel of 13 experts, which identifies and prioritizes key areas where blockchain can effectively support GDPR requirements. This model provides valuable insights for policymakers, industry leaders, and technology developers, emphasizing blockchain's strategic role in enhancing data protection under GDPR.