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SoK: Decentralized Finance (DeFi)

Author

Listed:
  • Sam M. Werner
  • Daniel Perez
  • Lewis Gudgeon
  • Ariah Klages-Mundt
  • Dominik Harz
  • William J. Knottenbelt

Abstract

Decentralized Finance (DeFi), a blockchain powered peer-to-peer financial system, is mushrooming. Two years ago the total value locked in DeFi systems was approximately 700m USD, now, as of April 2022, it stands at around 150bn USD. The frenetic evolution of the ecosystem has created challenges in understanding the basic principles of these systems and their security risks. In this Systematization of Knowledge (SoK) we delineate the DeFi ecosystem along the following axes: its primitives, its operational protocol types and its security. We provide a distinction between technical security, which has a healthy literature, and economic security, which is largely unexplored, connecting the latter with new models and thereby synthesizing insights from computer science, economics and finance. Finally, we outline the open research challenges in the ecosystem across these security types.

Suggested Citation

  • Sam M. Werner & Daniel Perez & Lewis Gudgeon & Ariah Klages-Mundt & Dominik Harz & William J. Knottenbelt, 2021. "SoK: Decentralized Finance (DeFi)," Papers 2101.08778, arXiv.org, revised Sep 2022.
    • Handle: RePEc:arx:papers:2101.08778
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    References listed on IDEAS

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    1. Tim Roughgarden, 2020. "Transaction Fee Mechanism Design for the Ethereum Blockchain: An Economic Analysis of EIP-1559," Papers 2012.00854, arXiv.org.
    2. Michel Rauchs & Garrick Hileman, 2017. "Global Cryptocurrency Benchmarking Study," Cambridge Centre for Alternative Finance Reports 201704-gcbs, Cambridge Centre for Alternative Finance, Cambridge Judge Business School, University of Cambridge.
    3. Ariah Klages-Mundt & Andreea Minca, 2020. "While Stability Lasts: A Stochastic Model of Non-Custodial Stablecoins," Papers 2004.01304, arXiv.org, revised Jul 2022.
    4. Sam M. Werner & Paul J. Pritz & Daniel Perez, 2020. "Step on the Gas? A Better Approach for Recommending the Ethereum Gas Price," Springer Proceedings in Business and Economics, in: Panos Pardalos & Ilias Kotsireas & Yike Guo & William Knottenbelt (ed.), Mathematical Research for Blockchain Economy, pages 161-177, Springer.
    5. Wang, Yunsen & Kogan, Alexander, 2018. "Designing confidentiality-preserving Blockchain-based transaction processing systems," International Journal of Accounting Information Systems, Elsevier, vol. 30(C), pages 1-18.
    6. Massimo Bartoletti & James Hsin-yu Chiang & Alberto Lluch-Lafuente, 2020. "SoK: Lending Pools in Decentralized Finance," Papers 2012.13230, arXiv.org.
    7. Guillermo Angeris & Tarun Chitra, 2020. "Improved Price Oracles: Constant Function Market Makers," Papers 2003.10001, arXiv.org, revised Jun 2020.
    8. John C. Harsanyi, 1967. "Games with Incomplete Information Played by "Bayesian" Players, I-III Part I. The Basic Model," Management Science, INFORMS, vol. 14(3), pages 159-182, November.
    9. Sam M. Werner & Daniel Perez, 2020. "PoolSim: A Discrete-Event Mining Pool Simulation Framework," Springer Proceedings in Business and Economics, in: Panos Pardalos & Ilias Kotsireas & Yike Guo & William Knottenbelt (ed.), Mathematical Research for Blockchain Economy, pages 167-182, Springer.
    10. Robin Hanson, 2003. "Combinatorial Information Market Design," Information Systems Frontiers, Springer, vol. 5(1), pages 107-119, January.
    11. Alex Evans, 2020. "Liquidity Provider Returns in Geometric Mean Markets," Papers 2006.08806, arXiv.org, revised Jul 2020.
    12. Guillermo Angeris & Alex Evans & Tarun Chitra, 2020. "When does the tail wag the dog? Curvature and market making," Papers 2012.08040, arXiv.org.
    13. Lewis Gudgeon & Sam M. Werner & Daniel Perez & William J. Knottenbelt, 2020. "DeFi Protocols for Loanable Funds: Interest Rates, Liquidity and Market Efficiency," Papers 2006.13922, arXiv.org, revised Oct 2020.
    14. Matthias Nadler & Fabian Schar, 2020. "Decentralized Finance, Centralized Ownership? An Iterative Mapping Process to Measure Protocol Token Distribution," Papers 2012.09306, arXiv.org.
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    Citations

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    Cited by:

    1. Jiahua Xu & Nikhil Vadgama, 2021. "From banks to DeFi: the evolution of the lending market," Papers 2104.00970, arXiv.org, revised Dec 2022.
    2. Robin Fritsch & Samuel Kaser & Roger Wattenhofer, 2022. "The Economics of Automated Market Makers," Papers 2206.04634, arXiv.org.
    3. Bruno Mazorra & Victor Adan & Vanesa Daza, 2022. "Do Not Rug on Me: Leveraging Machine Learning Techniques for Automated Scam Detection," Mathematics, MDPI, vol. 10(6), pages 1-24, March.
    4. Teng Andrea Xu & Jiahua Xu, 2022. "A Short Survey on Business Models of Decentralized Finance (DeFi) Protocols," Papers 2202.07742, arXiv.org, revised Jul 2023.
    5. Lucy Huo & Ariah Klages-Mundt & Andreea Minca & Frederik Christian Munter & Mads Rude Wind, 2021. "Decentralized Governance of Stablecoins with Closed Form Valuation," Papers 2109.08939, arXiv.org, revised Jul 2022.
    6. Castro-Iragorri, C & Ramírez, J & Vélez, S, 2021. "Financial intermediation and risk in decentralized lending protocols," Documentos de Trabajo 19420, Universidad del Rosario.
    7. Bruno Mazorra & Victor Adan & Vanesa Daza, 2022. "Do not rug on me: Zero-dimensional Scam Detection," Papers 2201.07220, arXiv.org.
    8. Simon Cousaert & Jiahua Xu & Toshiko Matsui, 2021. "SoK: Yield Aggregators in DeFi," Papers 2105.13891, arXiv.org, revised Mar 2022.
    9. Yixin Cao & Chuanwei Zou & Xianfeng Cheng, 2021. "Flashot: A Snapshot of Flash Loan Attack on DeFi Ecosystem," Papers 2102.00626, arXiv.org.
    10. Şoiman, Florentina & Dumas, Jean-Guillaume & Jimenez-Garces, Sonia, 2023. "What drives DeFi market returns?," Journal of International Financial Markets, Institutions and Money, Elsevier, vol. 85(C).
    11. Carlos Castro-Iragorri & Julian Ramirez & Sebastian Velez, 2021. "Financial intermediation and risk in decentralized lending protocols," Papers 2107.14678, arXiv.org.

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