An Implementation of Fake News Prevention by Blockchain and Entropy-based Incentive Mechanism
Chien-Chih Chen, Yuxuan Du, Richards Peter, Wojciech Golab · 2021 IEEE International Conference on Big Data (Big Data) · 2021
Fake news is undoubtedly a significant threat to democratic countries nowadays because existing technologies can quickly and massively produce fake videos, articles, or social media messages based on the rapid development of artificial intelligence and deep learning. Therefore, human assistance is critical if current automatic fake new identification technologies desire to improve accuracy. Given this situation, prior research has proposed to add a quorum, a group of appraisers trusted by users to verify the authenticity of the information, to the fake news prevention systems. This paper proposes a stake-based incentive mechanism to diminish the negative effect of malicious behaviors on a quorum-based fake news prevention system. Moreover, we use Hyperledger Fabric, Schnorr signatures, and human appraisers to implement a practical prototype of a quorum-based fake news prevention system. Then we conduct necessary case analyses and experiments to realize how dishonest participants, crash failures, and scale impact our system. The outcomes of the case analyses and experiments show that our mechanisms are feasible and provide an analytical basis for developing fake news prevention systems.