Table 4.

Comparative Analysis with Other Studies.

Reference	Access Control Policies	Audit	Blockchain Platform	Performance Evaluation	Field	Payment
[33]	No	Audit Trails Logs	No	Yes	EHR	No
[34]	No	Audit Logs	No	Yes	EHR	No
[26]	No	Audit Logs	H. Fabric	No	EHR	No
[29]	Yes / XACML	Auditing	H. Fabric	Yes	EHR	No
[21]	No	Auditing Data	Ethereum	Yes	IOT	Yes
[30]	No	Auditing Management	Quorum	Yes	IOT	No
[20]	No	Data Auditing	Ethereum	Yes	Network Storage	No
Proposed	YES / Purpose Based	Audit Trails, Compliance Auditing, Audit Logs	Ethereum	Yes	EHR	Yes