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A Moderation Framework for the Swift and Transparent Removal of Illicit Blockchain Content
Blockchains gained tremendous attention for their capability to provide immutable and decentralized event ledgers that can facilitate …
Roman Matzutt, Vincent Ahlrichs, Jan Pennekamp, Roman Karwacik, Klaus Wehrle
PDF Cite DOI GitHub
CoinPrune: Shrinking Bitcoin's Blockchain Retrospectively
Popular cryptocurrencies continue to face serious scalability issues due to their ever-growing blockchains. Thus, modern blockchain …
Roman Matzutt, Benedikt Kalde, Jan Pennekamp, Arthur Drichel, Martin Henze, Klaus Wehrle
PDF Cite DOI GitHub coinprune.comsys.rwth-aachen.de arXiv
Putting Privacy into Perspective -- Comparing Technical, Legal, and Users' View of Information Sensitivity
Social media, cloud computing, and the Internet of Things connect people around the globe, offering manifold benefits. However, the …
Eva-Maria Schomakers, Chantal Lidynia, Dirk Müllmann, Roman Matzutt, Klaus Wehrle, Indra Spiecker Gen. Döhmann, Martina Ziefle
PDF Cite DOI dl.gi.de arXiv
How to Securely Prune Bitcoin’s Blockchain
Bitcoin was the first successful decentralized cryptocurrency and remains the most popular of its kind to this day. Despite the …
Roman Matzutt, Benedikt Kalde, Jan Pennekamp, Arthur Drichel, Martin Henze, Klaus Wehrle
PDF Cite GitHub coinprune.comsys.rwth-aachen.de arXiv
Dispute Resolution for Smart Contract-based Two Party Protocols
Blockchain systems promise to mediate interactions of mutually distrusting parties without a trusted third party. However, protocols …
Eric Wagner, Achim Völker, Frederik Fuhrmann, Roman Matzutt, Klaus Wehrle
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SHIELD: A Framework for Efficient and Secure Machine Learning Classification in Constrained Environments
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Smart Contract-based Car Insurance Policies
Lennart Bader, Jens Christoph Bürger, Roman Matzutt, Klaus Wehrle
PDF Cite DOI IEEE Xplore
Thwarting Unwanted Blockchain Content Insertion
Since the introduction of Bitcoin in 2008, blockchain systems have seen an enormous increase in adoption. By providing a persistent, …
PDF Cite DOI IEEE Xplore
A Quantitative Analysis of the Impact of Arbitrary Blockchain Content on Bitcoin
Blockchains primarily enable credible accounting of digital events, e.g., money transfers in cryptocurrencies. However, beyond this …
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BLOOM: BLoom filter based Oblivious Outsourced Matchings
Whole genome sequencing has become fast, accurate, and cheap, paving the way towards the large-scale collection and processing of human …
PDF Cite DOI GitHub