A Crosschain-Based Fair Exchange of Products For Poverty Alleviation

Chen Yuan, Yang Anjia, Liu Zilin, Pei Qingfu, Ma Li
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Abstract

Through providing products or financial assistance, poverty alleviation is an effective way to reduce poverty. With properties of decentralization, traceability, and publicity, blockchain technology has been well studied to solve the problems of corruption, single point of failure, and complex transaction procedure in traditional centralized poverty alleviation platforms. However, most of poverty alleviation programs in the market are built on single blockchain, which contain only one kind of product information. It is difficult for products to be exchanged on different blockchains, which limits the further expansion of poverty alleviation. This paper proposes a universal and efficient cross-chain fair exchange scheme for poverty-alleviation products. Specifically, we employ an adaptor signature scheme to achieve fairness in the exchange. It ensures that when one party gets the exchanged poverty alleviation product, the other party will also get his corresponding product. In addition, we also adopt the verifiable time discrete logarithm algorithm to solve the problem that the lack of a special scripting language does not allow us to set "timeout" on the transaction and fall into a deadlock problem. Finally, we deploy the scheme on the local environment, public test chains of Ethereum, and conduct a series of experiments to verify its effectiveness and efficiency.
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基于交叉链的扶贫产品公平交换
通过提供产品或财政援助,扶贫是减少贫困的有效途径。区块链技术具有去中心化、可追溯性、公共性等特点,解决了传统集中式扶贫平台存在的腐败、单点故障、交易流程复杂等问题。然而,市场上大多数扶贫项目都是建立在单一的区块链上,其中只包含一种产品信息。产品难以在不同区块链上进行交换,这限制了扶贫的进一步扩大。本文提出了一种通用、高效的扶贫产品跨链公平交换方案。具体来说,我们采用了一个适配器签名方案来实现交换的公平性。它保证了一方得到交换的扶贫产品时,另一方也会得到相应的产品。此外,我们还采用了可验证的时间离散对数算法,解决了由于缺乏专门的脚本语言,无法对事务设置“超时”而陷入死锁的问题。最后,我们将方案部署在以太坊的本地环境公共测试链上,并进行了一系列实验来验证其有效性和效率。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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