基于区块链的数据版权保护与组合竞拍

doi:10.12066/j.issn.1007-2861.2376

Abstract

Abstract:

A data copyright protection and combinatorial auction system was designed and implemented based on blockchain, digital watermark and sealed bids combinatorial auction. First, a smart contract was applied to store the copyright data and their transaction record via a decentralized technique known as blockchain, which could achieve consensus between each node who did not trust each other. Consequently the system could be rendered more trustworthy. Moreover, a digital watermark was a unique code hidden in data, which could be used to prove the ownership of copyright. The results showed that the watermark module used in the system barely altered original data and was efficient when embedding and extracting watermark. Finally, a combinatorial auction algorithm was designed to select an optimal bid combination automatically to implement the value exchange of data copyright.

Key words: digital copyright, digital watermark, blockchain, smart contract, combinatorial auction

CLC Number:

TP 391

XU Yuqin, QIAN Quan. Blockchain based data copyright protection and combinatorial auction[J]. Journal of Shanghai University（Natural Science Edition）, 2022, 28(3): 413-426.

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Blockchain based data copyright protection and combinatorial auction

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