Hierarchical Interdependency Blockchain for Assessing Performance and Modulation Proof of Stake (POS) Security Protocol in Healthcare Application 5.0

Patients’ electronic health records (EHRs) stored in the cloud are more likely to suffer from data breaches. Data security risks arise from EHRs relying on centralised databases, as this approach places the responsibility for data protection on the user. Indeed, it leaves data security to a single organisation, leaving it open to intrusion by its workers. Maintaining the privacy and integrity of patient information is of utmost importance when interacting with and integrating with EHR systems. Therefore, in order to find the best blockchain framework for trustworthy electronic health records (EHRs), a precise method for comparing the effects of several current blockchain systems is required. Data from electronic health record applications is encrypted and saved in the cloud using IPFS off-chain as part of this study, following a design that is consistent with patient data management. To secure electronic health record data, the system uses a hierarchical interdependency approach for block construction and framework design. This research is focused on finding a solution to the issue of privacy leaking in data sharing. To ensure the privacy of user’s data, the healthcare system utilises a multilevel authentication mechanism and an encryption technique that is based on hierarchical interdependency attributes. Smart contracts have been used to establish hierarchical access control for various Internet of Things systems, guaranteeing control over data access. This paper describes how the system's scalability, transaction latency, and throughput may be improved by implementing a modified proof-of-stake (POS) security protocol in healthcare application 5.0. This helps to secure users' privacy and security. In comparison to more conventional blockchain solutions, the experimental results demonstrate improvements in efficiency and security in terms of variables such as block size, upload time, transaction range, and evaluation metrics such as transaction delay. In addition, a generic EHR configuration strengthens the hierarchical interdependency blockchain. The results of this configuration are thoroughly discussed in the paper, revealing a noticeable improvement in the performance parameters block size, different nodes, upload time, transaction range, and evaluation metrics like Transaction delay, which are determined through empirical research for different EHR dataset scenarios of EHR blockchains