Paper: arXiv 2604.17579

Authors: Anastasiia Zbandut, Carolina Goldstein

Abstract

We derive five tractable credit risk metrics for DeFi lending vault depositors, grounded in a formal three level decomposition of vault risk into mechanical loss channels (Level 1), governance quality (Level 2) and smart contract code integrity (Level 3). For Level 1, we show that six structural features of onchain execution (oracle execution divergence, endogenous recovery, full information run dynamics, timelock constrained governance, oracle manipulation and congestion driven liquidation failure) break canonical TradFi analogies and generate depositor loss channels absent from standard credit frameworks. Vault credit risk metrics translate these channels into measurable risk components which are aggregated into a vault credit score. The empirical contribution is an implementable estimation architecture for credit risk metrics, including required onchain data, identification strategies for core parameters, partial identification bounds and a coherent stress scenario methodology. The results have direct implications for vault risk management and for minimum transparency standards necessary for depositor risk assessment.

Complexity vs Empirical Score

  • Math Complexity: 6.5/10
  • Empirical Rigor: 7.0/10
  • Quadrant: Holy Grail — high math complexity, high empirical rigor

Why this score: The paper presents a highly original theoretical framework that adapts traditional credit risk modeling to the unique mechanics of DeFi lending vaults. It provides strong structural modeling supported by a feasible empirical architecture and parameter identification strategy for on-chain data.

Research Flowchart

  flowchart TD
    A["Research Goal:<br>Measure DeFi Vault Credit Risk"] --> B["3-Level Risk Decomposition:<br>Mechanical, Governance & Code Integrity"]
    C["Inputs: Onchain Data &<br>6 Structural Execution Features"] --> D["Methodology: Parameter Identification<br>& Partial Bounds Estimation"]
    B --> D
    D --> E["Computational Process:<br>Derive 5 Metrics & Stress Scenarios"]
    E --> F["Outcomes: Vault Credit Score &<br>Transparency Standards"]