Rehypothecation in cryptocurrency refers to when centralized platforms reuse their customers' deposited crypto assets as collateral for other financial activities. This practice occurs when users deposit their crypto into a platform (like an exchange or lending service), and the platform then uses those same assets for their own borrowing needs, trading activities, or to facilitate additional loans to other users.
While rehypothecation helps platforms enhance liquidity and operational efficiency by amplifying the utility of deposited assets, it introduces significant risks for users. The main concern is the security of customer assets – if the platform engages in risky trading or faces financial difficulties, users could lose their deposits. This risk becomes particularly acute during market stress, as multiple claims on the same assets can create complex chains of obligations.
Most Decentralized Finance (DeFi) protocols avoid rehypothecation by using smart contracts that lock collateral transparently on the blockchain. This allows users to verify the status of their assets at any time.
Additionally, automated liquidation mechanisms in DeFi reduce systemic risk by promptly addressing margin calls without the need for asset reuse.
To mitigate the risks associated with rehypothecation, several strategies can be employed: