Blockchain-Based Contact Tracing and Information Sharing Model for COVID-19 Pandemic

Table 3

Overall comparison of existing work with proposed work.

Paper name	Decentralized	Authentication of user	Data confidentiality	Availability	Tractability	Integrity
Azzaoui [3]	Yes	Yes	Yes	No	No	No
Sharma et al. [4]	Yes	Yes	No	No	No	Yes
Kim et al. [2]	Yes	Yes	Yes	No	No	Yes
Abouyoussef et al. [5]	Yes	No	Yes	No	No	No
Dhaliwal et al. [12]	No	No	Yes	Yes	No	No
Gupta et al. [18]	No	Yes	Yes	Yes	Yes	No
Proposed work	Yes	Yes	Yes	Yes	Yes	Yes