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.

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