Anti-collusion data auction mechanism based on smart contract.

Due to the uncertainty of the value of big data, it is difficult to directly give a reasonable price for big data. Auction is an effective method of distributing goods to the bidder with the highest valuation. Hence, the use of auction strategy can not only guarantee the interests of data sellers, but also conform to market principles. However, existing data auction mechanisms are centralized. It is hard to build trust among sellers, buyers and auctioneers. An open and anonymous online environment may cause entities involved in data auctions to collude to manipulate the results of data auctions. This will cause the price of auction data to fail to reach a fair and truthful level. Therefore, the first anti-collusion data auction mechanism based on smart contract is proposed. Through a well-designed anti-collusion data auction algorithm, mutual distrust and rational buyers and sellers safely participate in the data auction without a trusted third party. The data auction mechanism designed in the smart contract can effectively prevent collusion and realize the fairness and truthfulness of data auction. The webpack in the Truffle Boxes is used to implement the data auction mechanism, and the anti-collusion property of the mechanism has been verified. The source code of the smart contract has been uploaded to GitHub. [ABSTRACT FROM AUTHOR]