开发一个系统，用于安全地为在线新闻内容的更改打上时间戳并使其可视化
Developing a system for securely time-stamping and visualizing the changes made to online news content
摘要：
如今，互联网在信息传播方面不可或缺。人们依靠互联网来了解当前的新闻事件，以及核实事实。作为一个社会，我们正在迅速接近一个“电子信息时代”，其中大部分信息将以电子方式分发，保存这些信息的工具将变得至关重要。虽然将在线数字信息存档是为子孙后代保存在线信息的一种好方法，但它也有许多缺点，包括容易被存档机构等操纵。在线信息也很容易被黑客攻击或离线。因此，存档的在线新闻信息必须以无法操纵的方式安全地标记上首次存档的日期和时间。“可信时间戳”的过程是一种既定的方法，用于声称特定的数字信息存在于过去的特定“时间点”。然而，传统的可信时间戳方法依赖于时间戳权威机构的忠诚度。将数字文件的散列直接嵌入到加密货币的区块链中是一种允许安全时间戳的较新方法，因为数字信息作为交易信息的一部分存储在例如比特币的区块链中，而不是存储在集中式时间戳机构中。然而，目前还没有一个系统可以使用这种方法对在线新闻文章进行存档和时间标记。因此，本论文的目的是开发一个系统，1）使分散的可信的时间戳的网络和新闻文章作为一种手段，使未来的在线信息可识别的操纵，和2）允许用户通过检查不同版本的同一篇文章在线确定文章的真实性。
英文摘要：
Nowadays, the Internet is indispensable when it comes to information dissemination. People rely on the Internet to inform themselves on current news events, as well as to verify facts. We, as a community, are quickly approaching an 'electronic information age' where the majority of information will be distributed electronically and tools to preserve this information will become essential. While archiving online digital information is a good way to preserve online information for future generations, it has many disadvantages including the easy manipulation of archived information, e.g. by the archiving authority. Online information is also prone to getting hacked or being taken offline. Therefore, it is necessary that archived online news information is securely time-stamped with the date and time when it was first archived in a way that cannot be manipulated. The process of 'trusted timestamping' is an established approach for claiming that particular digital information existed at a particular 'point in time' in the past. However, traditional approaches for trusted timestamping depend on the time-stamping authority's fidelity. Directly embedding the hash of a digital file into the blockchain of a cryptocurrency is a more recent method that allows for secure time-stamping, since digital information is stored as part of the transaction information in, e.g. Bitcoin's, blockchain, and not stored at a centralized time-stamping authority. However, there is no system yet available, which uses this approach for archiving and time-stamping online news articles. Therefore, the aim of this thesis is to develop a system that 1) enables decentralized trusted time-stamping of web and news articles as a means of making future manipulation of online information identifiable, and 2) allows users to determine the authenticity of articles by checking different versions of the same article online.
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。
