An Accountable Data Trading Platform Based on Blockchain

In the era of big data, the sale of digital data has became a promising business. Although data trading brings a big dividend, it still has the issues of data authentic right and infringement tracking difficulty. The solutions of monitoring consumers and platform regulation introduce privacy and security issues. To overcome these challenges, a blockchain-based accountable data trading platform is proposed. The platform uses the blockchain technology to build a distributed secure and trusted environment for big data trading. Before listing datasets on the data market, a secure dataset similarity comparison method is used to detect illegal resale. The misbehavior of customers can be traced by the blockchain nodes because the key points of the data trading are recorded in the blockchain. Through secure analysis and performance evaluation, we evaluate the feasibility and effectiveness of the trading platform.