论文标题
区块链：一个安全的分散数据市场，具有恒定的区块链负载
BlockMarkchain: A Secure Decentralized Data Market with a Constant Load on the Blockchain
论文作者
论文摘要
在本文中，我们将BlockmarkChain作为安全的数据市场开发，在该地区，单个数据销售商可以在安全环境中与买家，当事方之间没有任何相互信任，而不信任第三方，作为调解人，在这里，单个数据销售商可以在这里交换认证的数据。为了开发此平台，我们依靠一个智能合约，该合同部署在安全的公共区块链上。这里的主要挑战是验证数据的有效性并防止当事方的恶意行为，同时保留数据的隐私并考虑区块链上可用的有限的计算和存储资源。在Blockmarkchain中，买方可以选择对卖方的诚实提出异议，并证明数据对智能合约的无效。智能合同评估买方的主张，并通过没收其押金以支持诚实政党来惩罚不诚实的政党。 Blockmarkchain享有多个显着功能，包括（i）在公共区块链上从未透露过的认证数据，（ii）张贴在区块链上的数据大小，区块链上的计算负载以及与区块链的通信成本恒定且可忽略不计，以及（iii）派对的计算成本并不昂贵。
In this paper, we develop BlockMarkchain, as a secure data market place, where individual data sellers can exchange certified data with buyers, in a secure environment, without any mutual trust among the parties, and without trusting on a third party, as a mediator. To develop this platform, we rely on a smart contract, deployed on a secure public blockchain. The main challenges here are to verify the validity of data and to prevent malicious behavior of the parties, while preserving the privacy of the data and taking into account the limited computing and storage resources available on the blockchain. In BlockMarkchain, the buyer has the option to dispute the honesty of the seller and prove the invalidity of the data to the smart contract. The smart contract evaluates the buyer's claim and punishes the dishonest party by forfeiting his/her deposit in favor of the honest party. BlockMarkchain enjoys several salient features including (i) the certified data has never been revealed on the public blockchain, (ii) the size of data posted on the blockchain, the load of computation on the blockchain, and the cost of communication with the blockchain is constant and negligible, and (iii) the computation cost of verifications on the parties is not expensive.
