cid a9e19a753fe2f265d27d736f3b351d7cf11c3150dfb4009884dbe2b1fb728ef8 · original · open access · via openalex
Title: Accountable Safety for Rollups Authors: Ertem Nusret Tas; Adler, John; Mustafa Al-Bassam; Ismail Khoffi; David N. C. Tse; Vaziri, Nima Venue: arXiv (Cornell University) Year: 2022 Canonical: doi:10.48550/arxiv.2210.15017 URL: https://doi.org/10.48550/arxiv.2210.15017 Collector: openalex OA: true ABSTRACT Accountability, the ability to provably identify protocol violators, gained prominence as the main economic argument for the security of proof-of-stake (PoS) protocols. Rollups, the most popular scaling solution for blockchains, typically use PoS protocols as their parent chain. We define accountability for rollups, and present an attack that shows the absence of accountability on existing designs. We provide an accountable rollup design and prove its security, both for the traditional `enshrined' rollups and for sovereign rollups, an emergent alternative built on lazy blockchains, tasked only with ordering and availability of the rollup data.