Computer Science

Poster: Timestamp Verifiability in Proof-of-Work

Document Type

Conference Paper

Abstract

2023 International Symposium on Theory, Algorithmic Foundations, and Protocol Design for Mobile Networks and Mobile Computing

Various blockchain systems have been designed for dynamic networked systems. Due to the nature of the systems, the notion of "time"in such systems is somewhat subjective; hence, it is important to understand how the notion of time may impact these systems. This work focuses on an adversary who attacks a Proof-of-Work (POW) blockchain by selfishly constructing an alternative longest chain. We characterize optimal strategies employed by the adversary when a difficulty adjustment rule alà Bitcoin applies. © 2023 Owner/Author(s).

Publication Title

Proceedings of the International Symposium on Mobile Ad Hoc Networking and Computing (MobiHoc)

Publication Date

10-23-2023

First Page

304

Last Page

205

ISBN

9781450399265

DOI

10.1145/3565287.3617934

Keywords

blockchain, difficulty adjustment, longest chain attack

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