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Auditability in Blockchain Systems Using Cryptographic Protocols

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dc.contributor.advisor Baldimtsi, Foteini
dc.creator Chatzigiannis, Panagiotis 2023-03-17T19:05:58Z 2023-03-17T19:05:58Z 2022
dc.description.abstract Enforcement of policy regulations and availability of auditing mechanisms are crucial building blocks for the adoption of distributed payment systems. In this thesis we provide a series of proposals towards implementing such systems (usually based on a blockchain), augmented with such functionalities. We first propose MiniLedger, a new standalone system that provides both auditability and privacy for its users, while achieving near-constant storage requirements by all participants who maintain it. We then propose add-on protocols for the Diem blockchain, a recently developed permissioned payment system, which enables proving assets held by custodial wallets in that system. Then we propose gOTzilla, which enables proving assets owned by organizations or exchanges in permissionless blockchain systems (such as Bitcoin), while remaining efficient even in the case such systems scale to millions of unspent transaction outputs. Finally, we describe BBox-IoT, which provides a way for resource-constrained devices (typically encountered in an Industrial IoT setting) to efficiently sign data, therefore enabling auditing data provenance in a blockchain-based Industrial IoT system.
dc.format.extent 214 pages
dc.format.medium doctoral dissertations
dc.language.iso en
dc.rights Copyright 2022 Panagiotis Chatzigiannis
dc.subject auditability
dc.subject blockchain
dc.subject cryptography
dc.title Auditability in Blockchain Systems Using Cryptographic Protocols
dc.type Text Ph.D. in Computer Science Doctoral Computer Science George Mason University
dc.subject.keywords Computer science

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