Cross-Protocol Collateral Rehypothecation
Cross-protocol collateral rehypothecation occurs when assets deposited as collateral in one decentralized finance protocol are simultaneously utilized or pledged as collateral in another. This practice effectively creates a chain of leverage where a single asset supports multiple debt positions across different platforms.
While this enhances capital efficiency, it creates significant systemic risk because the insolvency of one protocol can trigger automatic liquidations in others. If the underlying asset price drops, the interconnected debt positions may face simultaneous margin calls, creating a rapid, uncontrollable feedback loop.
Contagion mapping relies on identifying these hidden chains to assess how a failure in one venue affects the solvency of others. This mechanism is a primary driver of systemic risk in highly composable DeFi environments.