Title
MeritRank: Sybil Tolerant Reputation for Merit-based Tokenomics
Author
Nasrulin, B. (TU Delft Distributed Systems)
Ishmaev, G. (TU Delft Distributed Systems)
Pouwelse, J.A. (TU Delft Distributed Systems)
Date
2022
Abstract
Decentralized reputation schemes present a promising area of experimentation in blockchain applications. These solutions aim to overcome the shortcomings of simple monetary incentive mechanisms of naive tokenomics. However, there is a significant research gap regarding the limitations and benefits of such solutions. We formulate these trade-offs as a conjecture on the irreconcilability of three desirable properties of the reputation system in this context. Such a system can not be simultaneously generalizable, trustless, and Sybil resistant. To handle the limitations of this trilemma, we propose MeritRank: Sybil tolerant feedback aggregation mechanism for reputation. Instead of preventing Sybil attacks, our approach successfully bounds the benefits of these attacks. Using a dataset of participants’ interactions in MakerDAO, we run experiments to demonstrate Sybil tolerance of MeritRank. Decay parameters of reputation in MeritRank: transitivity decay and connectivity decay, allow for a fine-tuning of desirable levels of reputation utility and Sybil tolerance in different use contexts.
Subject
Reputation
Sybil attack
Tokenomics
Feedback Aggregation
To reference this document use:
http://resolver.tudelft.nl/uuid:bd3dabd8-07a3-48c8-99ba-145373ae47ec
DOI
https://doi.org/10.1109/BRAINS55737.2022.9908685
Publisher
IEEE, Danvers
Embargo date
2023-07-01
ISBN
978-1-6654-7159-6
Source
Proceedings of the 2022 4th Conference on Blockchain Research & Applications for Innovative Networks and Services (BRAINS)
Event
2022 4th Conference on Blockchain Research & Applications for Innovative Networks and Services (BRAINS), 2022-09-27 → 2022-09-30, Paris, France
Series
2022 4th Conference on Blockchain Research and Applications for Innovative Networks and Services, BRAINS 2022
Bibliographical note
Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.
Part of collection
Institutional Repository
Document type
conference paper
Rights
© 2022 B. Nasrulin, G. Ishmaev, J.A. Pouwelse