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2 papersLast indexed Aug 31, 2026
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Aug 19, 2024·2024 IEEE International Conference on Blockchain (Blockchain)
5 cites
zkSSI: A Zero-Knowledge-Based Self-Sovereign Identity Framework

Anh-Tu Hoang, Can Umut Ileri, William B. Sanders, Stefan Schulte

Self-Sovereign Identity (SSI) empowers holders to control their Verifiable Credentials (VCs) and demonstrate their compliance with verifiers' conditions by sending VCs to the verifiers. State-of-the-art SSI solutions from both industry (e.g., Polygon ID) and academia (e.g., zk-creds) protect holders' privacy by reducing the necessity to transmit these VCs which contain personal data. However, the solutions limit verifiers from expressing and verifying multiple conditions efficiently. This paper introduces zkSSI, which enables verifiers to ex-press complex requirements by combining multiple conditions using logical predicates and nested conditions. zkSSI utilizes zk-SNARKs to generate single or multiple zero-knowledge proofs, validating compliance with verifiers' requirements both on-chain and off-chain. Formal proofs are provided to show the privacy and security guarantees of zkSSI, and experimental results demonstrate its efficiency for both holders and verifiers, even when using consumer-grade hardware.

Political Theology and Sovereignty
Korean Peninsula Historical and Political Studies
Memory, History, Trauma, Identity
Original source
Jan 1, 2023·Nomos Verlagsgesellschaft mbH & Co. KG eBooks
0 cites
Transparenz(alp)traum DeFi?

Christopher Rennig

Berhrungsangst mit Superlativen existiert in der Kryptoszene nur selten. Deshalb verwundert es nicht, wenn Decentralized Finance (DeFi) -ein auf der Blockchain-Technologie basierendes Finanzsystem, das ohne zentrale Intermedire auskommen soll -als "the most automated and transparent financial system in human history" 1 bezeichnet wird -nicht mehr, aber auch nicht weniger! Das berthema der Konferenz 2 gibt Anlass fr eine eingehendere Auseinandersetzung mit dieser Aussage: Geht es bei DeFi tatschlich transparenter zu als in traditionellen, zentralisierten Finanzsys temen? Dem soll vorliegend nach einer Einfhrung in DeFi (B.) sowohl aus technischer (C.) als auch aus rechtlicher Sicht (D.) nachgegangen wer den.

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Nietzsche, Schopenhauer, and Hegel
Memory, History, Trauma, Identity
Art, Aesthetics, and Perception
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