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Open AccessArticle

FaDe: A Blockchain-Based Fair Data Exchange Scheme for Big Data Sharing

by Yuling Chen 1,2, Jinyi Guo 3, Changlou Li 3 and Wei Ren 1,3,4,*
1
State Laboratory of Public Big Data, GuiZhou University, Guizhou 550025, China
2
College of Computer Science and Technology, GuiZhou University, Guizhou 550025, China
3
School of Computer Science, China University of Geosciences (Wuhan), Wuhan 430074, China
4
Hubei Key Laboratory of Intelligent Geo-Information Processing, China University of Geosciences (Wuhan), Wuhan 430074, China
*
Author to whom correspondence should be addressed.
Future Internet 2019, 11(11), 225; https://doi.org/10.3390/fi11110225
Received: 31 July 2019 / Revised: 16 October 2019 / Accepted: 16 October 2019 / Published: 24 October 2019
(This article belongs to the Special Issue Blockchain: Current Challenges and Future Prospects/Applications)
In the big data era, data are envisioned as critical resources with various values, e.g., business intelligence, management efficiency, and financial evaluations. Data sharing is always mandatory for value exchanges and profit promotion. Currently, certain big data markets have been created for facilitating data dissemination and coordinating data transaction, but we have to assume that such centralized management of data sharing must be trustworthy for data privacy and sharing fairness, which very likely imposes limitations such as joining admission, sharing efficiency, and extra costly commissions. To avoid these weaknesses, in this paper, we propose a blockchain-based fair data exchange scheme, called FaDe. FaDe can enable de-centralized data sharing in an autonomous manner, especially guaranteeing trade fairness, sharing efficiency, data privacy, and exchanging automation. A fairness protocol based on bit commitment is proposed. An algorithm based on blockchain script architecture for a smart contract, e.g., by a bitcoin virtual machine, is also proposed and implemented. Extensive analysis justifies that the proposed scheme can guarantee data exchanging without a trusted third party fairly, efficiently, and automatically. View Full-Text
Keywords: big data transaction; blockchain; fair payment protocol; bitcoin; bit commitment big data transaction; blockchain; fair payment protocol; bitcoin; bit commitment
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Chen, Y.; Guo, J.; Li, C.; Ren, W. FaDe: A Blockchain-Based Fair Data Exchange Scheme for Big Data Sharing. Future Internet 2019, 11, 225.

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