「公平交換」與「客戶匿名」是電子商務協定的兩項重要特性，前者確保商家與客戶均能獲得交易標的，後者確保客戶真實身分不會於交易過程中洩漏，也是保護個人隱私之基礎。本研究以過往研究為基礎，導入比特幣付款機制，透過線上交易購買數位內容。提出之機制包含授權、瀏覽、交易及調解四個階段，經分析能確保公平交換與客戶匿名。與相關研究相比，所提出的機制在各階段都具有較低的計算成本。此外，亦能達到資訊安全要求的機密性、完整性、鑑別性及不可否認性。

“Fair exchange” and “customer anonymity” are important characteristics of e-commerce protocols. The former ensures that both the customer and the merchant can obtain the item of transaction while the latter ensures that the real identity of the customer is not leaked during the transaction process, and that it is also essential to protect personal privacy. Based on past researches, this study introduces a Bitcoin payment mechanism, to it can purchase digital content through online transactions. to proposea mechanism that includes four stages: authorization, browsing, transaction, and mediation. After analysis, it can ensure fair exchange and customer anonymity. Compared with related research, the proposed mechanism has lower computational cost at all stages. In addition, the confidentiality, integrity, identification and non-repudiation of information security requirements can be achieved.