Browsing by Subject "blockchain"

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    Conference Paper
    1st Workshop on Exploring Disruptive Technologies from the Local Community Perspective
    (Proceedings of the 11th International Conference on Communities and Technologies, 2023) Musto, Jiri; Heikkinen, Kari; Martin, Nicholas; Auvray, Bertille; Bakhaev, Stepan
    The use of disruptive technologies by the private and public sectors is increasing. With the release of new systems, many have wondered how artificial intelligence may change the world for better or worse. For this, European Commission has created instructions on how artificial intelligence and blockchain should and should not be used in the public sector. On the other hand, private companies are free to utilise these technologies. Many challenges and barriers must be overcome to have the public adopt these technologies. This one-day workshop will explore disruptive technologies from a local community perspective. We will use a case of artificial intelligence and blockchain-enabled electronic ID (eID) for the initial framing and exploration of this problem and compare the differences when the software solution is deployed locally, nationally or internationally. These differences and issues can be looked at, for example, through the lens of trust, usability, security, and privacy.
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    Conference Paper
    Blockchain and CSCW – Shall we care?
    (Proceedings of 16th European Conference on Computer-Supported Cooperative Work - Exploratory Papers, 2018) Prinz, Wolfgang
    This exploratory paper examines the relationship between CSCW and emerging blockchain technologies. Although the blockchain technology is at first sight not directly related to CSCW, this paper will identify a number of CSCW research areas that are relevant and that can either profit or contribute to blockchain research. To open CSCW research to new areas and to stipulate a discussion between the disciplines, the paper will start with a brief introduction to basic blockchain concepts followed by an exploration of the relationships between the two research areas. It concludes with an initial proposal on how CSCW research results and concepts can inform blockchain design.
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    Conference Paper
    Infrastructural Grind: Introducing Blockchain Technology in the Shipping Domain
    (Proceedings of the 2018 ACM International Conference on Supporting Group Work, 2018) Jabbar, Karim; Bjørn, Pernille
    In this paper, we present ethnographic data unpacking three different accounts of how Blockchain technology gets introduced into the shipping domain. The results demonstrate that the shipping industry is based upon an information infrastructure with a socio-technical kernel comprising transaction practices between shippers, freight forwarders, ports, shipping lines, and other actors in the shipping industry. These practices are based upon standards, which have evolved over time and are embedded within the installed base of the infrastructure. We find that because of the inertia of the shipping infrastructure, Blockchain technology cannot be seamlessly introduced directly into the shipping domain. Instead, we introduce Infrastructural Grind as the activity by which domains (e.g. shipping) intersect with new technological infrastructures (e.g. Blockchain). Infrastructural grind occurs as a result of various infrastructuring activities taking place at different intersections between the two infrastructures, and is constituted of the sum of these manifestations. We propose that infrastructural grind is enacted through activities expressing elements of consolidation, permeability, and velocity.
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    Conference Paper
    On Immutability of Blockchains
    (Proceedings of 1st ERCIM Blockchain Workshop 2018, 2018) Landerreche, Esteban; Stevens, Marc
    Recently we presented a single-party cryptographic timestamping mechanism based on proof-of-sequential-work, which we proved secure in the universal composability framework [16]. This paper describes this construction and its security claims and uses it to construct a multi-party permissioned blockchain protocol and show that it achieves an immutability notion. Finally we discuss applications of this protocol, including unpermissioned blockchains, and how these may benefit.
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    Conference Paper
    Privacy-preserving KYC on Ethereum
    (Proceedings of 1st ERCIM Blockchain Workshop 2018, 2018) Biryukov, Alex; Khovratovich, Dmitry; Tikhomirov, Sergei
    Identity is a fundamental concept for the financial industry. In order to comply with regulation, financial institutions must verify the identity of their customers. Identities are currently handled in a centralized way, which diminishes users' control over their personal information and threats their privacy. Blockchain systems, especially those with support for smart contracts (e.g., Ethereum), are expected to serve as a basis of more decentralized systems for digital identity management. We propose a design of a privacy-preserving KYC scheme on top of Ethereum. It would let providers of financial services leverage the potential of blockchain technology to increase effciency of customer onboarding while complying with regulation and protecting users' privacy.