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• Address interoperability limits in healthcare supply chains. • Use NFTs as identifiers that reference patient data distributed across multiple blockchains. • Propose a Selective Trust Architecture, with patient-controlled access via token ownership. • Introduce the concept of Layer-2 Interoperability in decentralized healthcare systems. • Link artifact design to theory development in blockchain and trust research.
Al-Sumaidaee et al. (Sun,) studied this question.