[Retracted] Blockchain in Secure Healthcare Systems: State of the Art, Limitations, and Future Directions

Table 6

Description of use cases.

Use case	Framework	Contribution	On-chain/off-chain storage	Privacy preserving
Electronic medical records	Ethereum	Enables a patient-centered system providing a comprehensive and approachable picture of medical records	On-chain	Yes
	Ethereum	Creates a mechanism for sharing health data in cloud archives	On-chain	Yes
	Specific	A decentralized PHR paradigm that provides answers to delay difficulties	Off-chain	No
	Ethereum	Offers a blockchain-based EMR system that satisfies ONC criteria	On-chain	Yes
	Proprietary	A medical platform that utilizes combination off-chain storage and on-chain authentication	Both	Yes
	Proprietary	A blockchain-based EMR administration solution is provided	On-chain	Yes
	Ethereum	Proposed a digital health records technology that safeguards healthcare data	On-chain	Yes
Remote patient monitoring	Hyperledger fabric	A blockchain-based portable medical system for cognitive behavioral therapy for sleeplessness	On-chain	Yes
	Ethereum	The use of blockchain-based consensus mechanism to accomplish real-time data processing is proposed	On-chain	Yes
	Ethereum	Develops an infrastructure that combines blockchain and IoT sensed information obtained from patients	On-chain	Yes
Pharmaceutical claims	Ethereum	Enables drug availability throughout transit by keeping public temperature data	On-chain	No
	Hyperledger fabric	Creates a blockchain-based control mechanism for drug distribution	On-chain	Yes
	Hyperledger fabric	Creates a pharmaceutical supply chain that is safe, unchangeable, and transparent	On-chain	Yes
Health insurance claims	Ethereum	A blockchain-based medical insurance recordkeeping system has been proposed	On-chain	Yes