Optimal Witnessing of Healthcare IoT Data Using Blockchain Logging Contract

Verification of data generated by wearable sensors is increasingly becoming concern to health service providers and insurance companies. These devices are typically vulnerable a wide range cybersecurity attacks, attempting manipulate sensing data. Most these disastrous attacks would remain undetected since neither healthcare servers nor Internet-of-Things (IoT) aware the existence attackers in middle communication. Thus, there need for verification framework that various authorities can request local network target IoT device. In this article, we leverage blockchain as distributed platform realize an on-demand scheme. This allows automatically transact with connected witnessing services. A public made witness statements on transmitted its network, subsequently, (in close vicinity IoT) offer service. Our contributions threefold: 1) develop system architecture based smart contract enables dynamically avail subject device from set witnesses which willing provide privacy-preserving manner) their wireless measurement exchange monetary return; 2) then method optimally select such way error minimized cost constraints; 3) finally, evaluate efficacy our scheme using real Wi-Fi session traces collected five-storeyed building more than thirty access points, representative hospital. According current pricing schedule Ethereum blockchain, verify typical order 0.01% at less $ 2 1-hr