Conventional data storage methods like SQL and NoSQL offer a huge amount of possibilities with one major disadvantage, having to use a centralized authority. This authority may be in the form of a centralized or decentralized master server or a permissioned peer-to-peer setting. This paper looks at different technologies on how to persist data without using a central authority, mainly looking at permissionless peer-to-peer networks, primarily Distributed Ledger Technologies (DLTs) and a combination of DLTs with conventional databases. Afterwards it is shown how a system like this might be implemented in two prototypes which are then evaluated against conventional databases.

中文翻译：

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对等系统中的不可变且民主的数据

诸如SQL和NoSQL之类的常规数据存储方法提供了许多可能性，但有一个主要缺点，那就是必须使用集中式授权。该权限可以采用集中式或分散式主服务器或许可的对等设置的形式。本文研究了如何在不使用中央权限的情况下持久化数据的不同技术，主要研究了无许可的对等网络，主要是分布式分类帐技术（DLT）以及DLT与常规数据库的组合。之后，展示了如何在两个原型中实现这样的系统，然后根据常规数据库对其进行评估。