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An Inter-blockchain Escrow Approach for Fast Bitcoin Payment

机译:跨越快速比特币支付的区间间托管方法

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In recent years, the Bitcoin (BTC) payment is increasingly popular in retailers and service providers. A BTC transaction (tx) needs six confirmations (one hour) to be validated, making it not suitable for fast-pay scenarios. Theoretically, a shorter waiting time period increases the success possibility of a double-spending attack. To address this problem, we propose BTCFast scheme to support fast BTC tx. BTCFast is a novel, decentralized, escrow-based scheme on top of the programmable smart contract (PSC)-enabled blockchains (e.g. Ethereum, EOS). We develop a smart contract (PayJudger) to work as a trusted payment judger, which guarantees the tx fairness. In addition, we devise a proof-of-work (PoW)-based payment judgment mechanism for PayJudger to resolve a BTC payment dispute. Our theoretical and experimental results show that BTCFast can reduce the waiting time to be less than 1 second with comparable security as the current approach (i.e., waiting for six confirmations) with no extra operation fee.
机译:近年来,比特币(BTC)支付在零售商和服务提供商中越来越受欢迎。 BTC交易(TX)需要验证六次确认(一小时),使其不适合快速付费方案。从理论上讲,较短的等待时间段增加了双重支出攻击的成功可能性。为了解决这个问题,我们提出了BTCFast方案来支持快速BTC TX。 BTCFast是一种小说,分散,基于托管的基于托管的计划,最重要的是,可编程智能合同(PSC)的区块链(例如Evereum,EOS)。我们制定智能合同(Payjudger)作为可值得信赖的付款判决,保证TX公平性。此外,我们制定工作验证(POW)的薪酬判决机制,以解决BTC支付争端。我们的理论和实验结果表明,BTCFast可以将等待时间降低到1秒,与当前方法(即等待六个确认)没有额外的操作费用。

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