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1 Markets I: The Ecosystem and Exchange-Traded Marketsالأسواق عبر الإنترنت 2 Markets II: Rates, FX and Creditالأسواق عبر الإنترنت 3 Markets III: Commodities, Energy and Cryptoالأسواق عبر الإنترنت 4 Quantitative Methodsالأساليب عبر الإنترنت 5 Derivatives and Volatilityالمشتقات عبر الإنترنت 6 Rates, Credit, XVA and Riskالفائدة والائتمان والمخاطر عبر الإنترنت 7 Research Craft: Predictors, Backtests, Measurement, Portfoliosالبحث عبر الإنترنت 8 Strategies I: Equities and Futuresالاستراتيجيات عبر الإنترنت 9 Strategies II: Volatility, Relative Value, Macro and the Bank Desksالاستراتيجيات عبر الإنترنت 10 Microstructure and Executionالتنفيذ عبر الإنترنت 11 Market Making and High-Frequency Tradingصناعة السوق عبر الإنترنت 12 Machine Learning for Marketsتعلم الآلة عبر الإنترنت 13 Low-Latency Softwareالتكنولوجيا عبر الإنترنت 14 Networks, Hardware and Trading Infrastructureالتكنولوجيا عبر الإنترنت 15 Research, Data and Risk Platformsالتكنولوجيا عبر الإنترنت 16 The Desk and the Firmالشركة عبر الإنترنت 17 The Industry: Firms, Roles and Careersالمسارات المهنية عبر الإنترنت 18 The Interview Bookالمسارات المهنية عبر الإنترنت
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Quantitative Finance · المسرد

ما معنى Oracle manipulation؟

Definition 23.8 Markets III: Commodities, Energy and Crypto · الفصل 23 — DeFi Credit and Leverage

Oracle manipulation is moving the price that an oracle reports to a smart contract, usually by trading in the thin markets it reads, in order to borrow against inflated collateral, avoid a liquidation or trigger one.

The oracle pump of : 5 million tokens at USD 1 as collateral (loan-to-value 60%), a pool of USD 50 million, and a source market holding USD 2 million; tokens bought in the pump are assumed worthless afterwards. The gain turns positive at a pump of less than two times, peaks when the pool is empty, and then falls as further pumping only costs. Illustrative parameters. Data: the chapter’s tutorial.
Figure 23.4. The oracle pump of Proposition 23.9: 5 million tokens at USD 1 as collateral (loan-to-value 60%), a pool of USD 50 million, and a source market holding USD 2 million; tokens bought in the pump are assumed worthless afterwards. The gain turns positive at a pump of less than two times, peaks when the pool is empty, and then falls as further pumping only costs. Illustrative parameters. Data: the chapter’s tutorial.
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