|
| Author | Ref. | Issues focused | Contribution | Year |
|
| Ayesha Shahnaz et al. | [21] | Scalability, storage, and capacity | Off-chain storage mechanism of IPFS | 2019 |
| Eman-Yasser Daraghmi et al. | [22] | Large dataset at low latency | MedChain with ElGamal re-encryption | 2019 |
| Bahar Houtan et al. | [23] | BC-based EHR and PHR are essential to realizing a distributed autonomous healthcare ecosystem | IoT, research and trial, supply chain, and healthcare insurance | 2020 |
| Raifa Akkaoui et al. | [24] | Interoperable, secure, and successful access | BC-based EHR and PHR | 2020 |
| Qianqian Su et.al. | [26] | To safeguard the privacy of the user’s identity in HSBC | KUNodes algorithm for attribute renovation in the healthcare system | 2020 |
| Vikas Jaiman et al. | [27] | To automate a generic consent model, and the solution is deployed and tested in LUCE | The Data Use Ontology (DUO) and the Automatable Discovery and Access Matrix (ADA-M) | 2020 |
| Shuyun shia et al. | [28] | Operational challenges | A fully integrated blockchain technology with existing EHR systems | 2020 |
| Yogesh Sharma et al. | [29] | Security, decentralization, and transparency | Cryptography based on hashing | 2020 |
| Faisal Jamil et al. | [30] | Drug supply chain integrity | Untimely access to electronic medication and patient records is granted through smart contract | 2019 |
| Lei Hang et al. | [31] | Improve data transparency | A secure blockchain platform for clinical data. The smart contract assures traceability, avoids a posteriori reconstruction, and securely automates clinical trial activities | 2021 |
| Lei Hang et al. | [32] | EMR integrity management | The suggested smart contract to secure EMR administration gives patients a full, immutable record and simple access to their medical information across hospital departments | 2019 |
| Helen Sharmila et al. | [33] | Wireless body area network (WBAN)-IoT | Proposed the EiA-H2B model (edge intelligent agent hybrid hierarchical blockchain) | 2021 |
| Weizhi Meng et al. | [34] | Trust management against insider attacks | Improve the Bayesian inference-based trust management of MSNs by using blockchains to make it more effective | 2020 |
| Guipeng Zhang et al. | [35] | Privacy preserving EHR in cloud | Establishing secure payment procedures with the use of blockchain-based smart contracts, which may allow patients and hospitals to pay for diagnostic and storage services in a dependable manner | 2022 |
| Wei Yang Chiu et al. | [36] | Secure data sharing and access scheme | Design a scheme that uses smart contract and blockchain to provide a secure data sharing and access environment | 2021 |
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