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arXiv · 1803.05871

Distributed Data Vending on Blockchain

Jiayu Zhou·Fengyi Tang·He Zhu·Ning Nan·Ziheng Zhou
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Abstract

Recent advances in blockchain technologies have provided exciting opportunities for decentralized applications. Specifically, blockchain-based smart contracts enable credible transactions without authorized third parties. The attractive properties of smart contracts facilitate distributed data vending, allowing for proprietary data to be securely exchanged on a blockchain. Distributed data vending can transform domains such as healthcare by encouraging data distribution from owners and enabling large-scale data aggregation. However, one key challenge in distributed data vending is the trade-off dilemma between the effectiveness of data retrieval, and the leakage risk from indexing the data. In this paper, we propose a framework for distributed data vending through a combination of data embedding and similarity learning. We illustrate our framework through a practical scenario of distributing and aggregating electronic medical records on a blockchain. Extensive empirical results demonstrate the effectiveness of our framework.

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Jiayu Zhou, Fengyi Tang, He Zhu, Ning Nan, Ziheng Zhou. 2018-03-15. Distributed Data Vending on Blockchain. https://arxiv.org/abs/1803.05871

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