Blockchain for e-healthcare: a review on secure data management frameworks and future challenges

The revolution in Blockchain Distributed Ledger Technology (BDLT) is changing conventional structures and creating previously unattainable opportunities across a variety of industrial fields. This study explores new developments, opportunities, and trends while tackling important issues that highlight the revolutionary potential of BDLT. For secure, automated, and dependable ecosystem management, it focuses on innovations like Denaturalized Finance (Defi), chaincode, and BDLT interface with the Internet of Things (IoT). The investigation of hybrid blockchain models, which combine the benefits of private and public blockchains, is a novel component of this research. It provides a customized strategy to guarantee improved scalability, privacy, and performance. Conversely, this study highlighted the critical function of Hyperledger, a modular framework that makes enterprise-level blockchain solutions possible. Thus, Ethereum is a flexible platform with strong chaincode capabilities that facilitate the creation of Distributed Applications (DApps). Such opportunities for advancements are evaluated closely in order to demonstrate how they contribute to practical uses and innovations unique to a given sector. To improve worldwide acceptance, the paper also presents Systematic Literature Review (SLR) in order to demonstrate the existing innovative frameworks, especially Hyperledger Technology (HT) for resolving constraints such as consensus protocols for energy efficiency and adaptive regulatory models. For technological experts, industrial developers, and third-party policymakers seeking to harness BDLT's disruptive capabilities while navigating its complexity, this paper offers new viewpoints and practical insights to help close the gap between theoretical innovation and real-world applications.