[Retracted] SmartMedChain: A Blockchain-Based Privacy-Preserving Smart Healthcare Framework

Table 3

Comparison between SmartMedChain and related Solutions.

Ref	Access control	Data usage auditing	SPoF resolution	Compliance laws	User preferences
[20]	Y	Y	N	N	N
[21]	Y	Y	N	N	N
[23]	Y	Y	Y	N	N
[24]	Y	Y	N	N	N
[25]	Y	N	N	N	Y
[26]	Y	N	N	N	Y
[43]	Y	Y	N	N	N
Ours	Y	Y	Y	Y	Y