Inspired by Bitcoin, many different kinds of cryptocurrencies based on blockchain technology have turned up on the market. Due to the special structure of the blockchain, it has been deemed impossible to directly trade between traditional currencies and cryptocurrencies or between different types of cryptocurrencies. Generally, trading between different currencies is conducted through a centralized third-party platform. However, it has the problem of a single point of failure, which is vulnerable to attacks and thus affects the security of the transactions. In this paper, we propose a distributed cryptocurrency trading scheme to solve the problem of centralized exchanges, which can achieve secure trading between different types of cryptocurrencies. Our scheme is implemented with smart contracts on an Ethereum blockchain and deployed on an Ethereum test network. In addition to implementing transactions between individual users, our scheme also allows transactions among multiple users. The experimental result proves that the cost of our scheme is acceptable.

中文翻译：

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启用跨链交易：去中心化的加密货币交换协议

受比特币的启发，市场上出现了许多基于区块链技术的加密货币。由于区块链的特殊结构，传统货币与加密货币之间或不同类型加密货币之间的直接交易被认为是不可能的。通常，不同货币之间的交易是通过一个中心化的第三方平台进行的。但是，它存在单点故障的问题，容易受到攻击，从而影响交易的安全性。在本文中，我们提出了一种分布式加密货币交易方案来解决中心化交易所的问题，可以实现不同类型加密货币之间的安全交易。我们的方案是通过以太坊区块链上的智能合约实现的，并部署在以太坊测试网络上。除了实现单个用户之间的交易，我们的方案还允许多个用户之间的交易。实验结果证明我们方案的成本是可以接受的。