Towards Trustworthy IoT: A Blockchain-Edge Computing Hybrid System with Proof-of-Contribution Mechanism

Figure 4

The credit score changes based on behaviors of sensing devices. (a) When a malicious behavior happens. (b) When malicious behaviors happen twice. (c) When malicious behaviors happen three times. (d) When a lazy behavior happens.

(a)

(b)

(c)

(d)