Protocol Berg v2

Non-local redundancy: Erasure coding and dispersed replicas for robust retrieval in the Swarm peer-to-peer network
2025-06-12 , Main Stage - Cinema 10

In this presentation, we describe in detail how non-local redundancy is implemented in the Swarm peer-to-peer network. Among other things, we show how to apply classic Reed-Solomon erasure codes to files in Swarm, discuss security levels of data availability and derive their respective parameterisations, describe a construct that enables cross-neighbourhood redundancy for singleton chunks to complete erasure coding, and explore alternative retrieval strategies applicable to erasure-coded files and their impact on latency as well as price of retrieval.

As one of the first employees of the Ethereum Foundation, V is one of the founding figures in the Web3 movement. Founder and architect of Ethereum Swarm, he leads the mission to build a serverless, decentralized web, the blueprint of which is published as The Book of Swarm.

Crypto OG, self-described “code artist”, blending deep technical expertise with an uncompromising passion for freedom and self-sovereignty, he embodies the ethos of freedom and decentralization, both in technology and life.```````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````