Data Right Confirmation Mechanism Based on Blockchain and Locality Sensitive Hashing

Abstract

In the era of big data, the ownership of digital asset has become an important issue that people concern about. Traditional means of data right confirmation adopt the mode of submitting the ownership evidence and authority reviewing, but there are uncontrollable factors such as potential tampering. In order to solve this problem, a data right confirmation mechanism based on blockchain and locality sensitive hashing is proposed. First, blockchain technology is used to handle the matter of trust in data right confirmation, and a user identity management scheme based on Hyperledger Fabric is proposed to ensure the credibility of the identity of the confirmation entity. Secondly, a data fingerprint extraction scheme based on locality sensitive hashing is proposed, and it is used to maintain the consistency of the fingerprints stored on the blockchain and the data disseminated off the blockchain. Finally, the chaincode deployed on Hyperledger is developed to support the submitting, verification and notarization of confirmation transactions. And the security SDK components are developed to interact with the chaincode. The result of experiment shows that this mechanism can effectively discover the infringement of data resources with the appropriate parameters.