Proposed Blockchain-Based Data Tracking
Solution
We propose a blockchain-basd solution and system for tracking data
relevant to Covid-19. The system connects decentralized applications
(DApps), dashboards, smart contracts, oracles and web feed sources
within the same decentralized Ethereum network as illustrated in Fig. 3.
The proposed framework collects data from various web feed sources (WHO,
CDC, IHME, etc.) via oracles.
The proposed system components are described below:
Ethereum Smart Contract
The second-generation blockchain platform such as Ethereum enables smart
contracts that act as software agents to be deployed in the blockchain
network . Smart contracts can automatically execute the terms of the
agreement and verify credible transactions without the interference from
third parties . In our proposed solution, the blockchain system consists
of three smart contracts as shown in Fig. 3.