- 會議論文
- OpenAccess
匿名加密貨幣與實名商家交易的有效行動支付監督平台之建置與實作－以比特幣為例
摘要
知名加密貨幣比特幣的底層核心區塊鏈（blockchain）技術已成為了傳統中央集權金融體系在跨國轉帳眾多問題的最佳解決方案，因為比特幣是在無所不在的網際網路上運行，利用同儕網路架構的雜湊現金（Hashcash）系統，它解決了跨國時差與營業時間限制的問題。也因為它的去中心化及匿名性，所以大幅降低人為前往銀行申報資金交易的人力成本，可以有效解決傳統金融交易系統的冗長處理手續、過長等待時間以及高額手續費等眾多問題。而比特幣背後的密碼學原理，也奠定了比特幣的安全性，讓使用者可以更安心的使用加密貨幣。此外，對政府而言，將貨幣電子化可以解決許多問題，包括假鈔的橫行，使得店家的收益明細透明化，在另一方面也保障著消費者購物上的權益、更可以使得稅務的監督更加的簡單、透明及方便；而電子化的交易明細，亦可簡化人工查帳比對的人力資源與減少查帳錯誤的發生機率。本論文提出以比特幣系統為基礎的匿名加密貨幣與實名商家交易時的收銀監督系統平台上效能提升方法，也就是結合比特幣綠色地址（Greenaddress）技術，有效縮短以區塊鏈為基礎的加密貨幣在商家行動支付時的交易可確定時間，並有效降低雙重花用（Double-spending）發生的可能性，並實際以開放原始碼的比特幣開發用之測試幣Testnet 為基礎，建置與實作此行動支付監督示範平台上的各項子系統以及所提出的交易效能改善方法，初步的實驗結果也驗證了所提改善方法的有效性。
並列摘要
The famous blockchain technology for Bitcoin cryptocurrency has become the best solution for many problems of transnational transfer service in centralized traditional financial systems. Because its Hashcash system with cryptography is based on the peer-to-peer network running on pervasive Internet, the problems of transnational time difference and limited office hours can be solved. Due to its decentralization and anonymity, it significantly reduces the labor cost of the transaction, lengthy handling and waiting time. Besides, we don't need to pay a high amount of crossborder wire transfer fee. Moreover, for the government, the digitization of money can solve many problems, including to reduce the spread of counterfeit money, make the store's earnings clear and transparent. On the other hand, it not only protects the interests of consumers' shopping, but also makes the tax supervision simpler, transparent and convenient. It can reduce not only the labor cost, but also the errors in taxation procedure This paper proposes a cost-effective method to improve the transaction performance on a mobile payment supervision system for anonymous cryptocurrency trading with named store using Bitcoin system. That’s to say, we apply Bitcoin Green address technology to not only shorten the confirmable transaction time, but also reduce the double spending possibility. Besides, we based on the open-source Bitcoin wallet called Testnet to further deploy and implement the subsystems of this Bitcoin mobile payment collection system including the proposed method for transaction performance improvement. The preliminary experimental results from the developed platform demonstrate the effectiveness of proposed improvement method.