Blockchain-Based Digital Twins Collaboration for Smart Pandemic Alerting: Decentralized COVID-19 Pandemic Alerting Use Case

Figure 6

Decentralized COVID-19 pandemic alerting use case. Data are exchanged among the blockchain-based digital twins network. Arrow explanation: (a) purple arrow is for sending personal data, (b) black arrow is for sending report to the blockchain network, (c) blue arrow is for receiving the report from blockchain network, (d) orange arrow is for sending warning to the potential and infected cases and for sending warning of cases increase to doctors, hospitals, and health organizations, (e) red arrow is for sending alert to the infected case and for sending warning of cases increase to doctors, hospitals, and health organization, and (f) green arrow is for sending and broadcasting the decision (e.g., quarantine and lockdown) made by health organizations and governments to the blockchain network.