Blockchain-enabled Decentralized Anonymous Crowdsourcing Based on Anonymous Payments

Hanwei Zhu, Nan Wang, Sid Chi Kin Chau, Majid Khonji

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    3 Scopus citations

    Abstract

    Decentralizing crowdsourcing using blockchain removes the trusted mediator who may cause social biases in data aggregation and uncertainties in ensuring proper rewards to workers. Permissionless blockchain discloses all data on public ledgers, which compromises the privacy and anonymity of workers and induces free-riders. State-of-the-art anonymous crowdsourcing systems enable anonymity through identity registration of workers and a trusted setup for key generation. However, these systems fail to support anonymous payments to workers, which may compromise the identities of workers. In this paper, we incorporate anonymous payments in crowdsourcing and dispense with identity registration and trusted setup to support open anonymous participation from any worker. Our solution is based on the decentralized anonymous payment systems (e.g., Zerocoin), commitment schemes, and efficient non-interactive zero-knowledge proofs.

    Original languageBritish English
    Title of host publication2023 IEEE International Conference on Blockchain and Cryptocurrency, ICBC 2023
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    ISBN (Electronic)9798350310191
    DOIs
    StatePublished - 2023
    Event5th IEEE International Conference on Blockchain and Cryptocurrency, ICBC 2023 - Dubai, United Arab Emirates
    Duration: 1 May 20235 May 2023

    Publication series

    Name2023 IEEE International Conference on Blockchain and Cryptocurrency, ICBC 2023

    Conference

    Conference5th IEEE International Conference on Blockchain and Cryptocurrency, ICBC 2023
    Country/TerritoryUnited Arab Emirates
    CityDubai
    Period1/05/235/05/23

    Keywords

    • Anonymous crowdsourcing
    • Blockchain
    • Smart contract
    • Zero-knowledge proofs
    • Zerocoin

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