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arXiv 1502.04015cs.CR
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使用加密货币比特币的分散可信时间戳

Decentralized Trusted Timestamping using the Crypto Currency Bitcoin

Bela Gipp, Norman Meuschke, André Gernandt

摘要:

可信时间戳是一个证明某些信息在给定时间点存在的过程。本文提出了一个可信的时间戳的概念,并以基于Web的服务的形式实现,该服务使用去中心化的比特币区块链来存储数字内容的匿名、防篡改的时间戳。该服务允许用户对文本、照片或视频等文件进行散列,并将创建的散列存储在比特币区块链中。然后,用户可以检索并验证已提交给区块链的时间戳。非商业服务使任何人,例如,研究人员、作家、记者、学生或艺术家,以证明他们在特定时间点拥有某些信息。常见的用例包括证明合同已经签署,拍摄照片,录制视频或在某个日期之前完成任务。所有程序都保持用户数据的完全隐私。

英文摘要:

Trusted timestamping is a process for proving that certain information existed at a given point in time. This paper presents a trusted timestamping concept and its implementation in form of a web-based service that uses the decentralized Bitcoin block chain to store anonymous, tamper-proof timestamps for digital content. The service allows users to hash files, such as text, photos or videos, and store the created hashes in the Bitcoin block chain. Users can then retrieve and verify the timestamps that have been committed to the block chain. The non-commercial service enables anyone, e.g., researchers, authors, journalists, students, or artists, to prove that they were in possession of certain information at a given point in time. Common use cases include proving that a contract has been signed, a photo taken, a video recorded, or a task completed prior to a certain date. All procedures maintain complete privacy of the user's data.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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