IPFS and Friends: A Qualitative Comparison of Next Generation Peer-to-Peer Data Networks

TL;DR

This paper provides a comprehensive qualitative comparison of next-generation peer-to-peer data networks like IPFS, Swarm, Hypercore, SAFE, Storj, and Arweave, highlighting their features, commonalities, and future research challenges.

Contribution

It offers a detailed technical overview and comparison of emerging decentralized data networks, emphasizing new developments and identifying future research directions.

Findings

Identification of common building blocks among data networks

Qualitative comparison highlighting strengths and weaknesses

Future challenges and research goals outlined

Abstract

Decentralized, distributed storage offers a way to reduce the impact of data silos as often fostered by centralized cloud storage. While the intentions of this trend are not new, the topic gained traction due to technological advancements, most notably blockchain networks. As a consequence, we observe that a new generation of peer-to-peer data networks emerges. In this survey paper, we therefore provide a technical overview of the next generation data networks. We use select data networks to introduce general concepts and to emphasize new developments. Specifically, we provide a deeper outline of the Interplanetary File System and a general overview of Swarm, the Hypercore Protocol, SAFE, Storj, and Arweave. We identify common building blocks and provide a qualitative comparison. From the overview, we derive future challenges and research goals concerning data networks.