DeFi: Vitalik Buterin Proposes a Debt- and Liquidation-Free Model

The co-founder of Ethereum, Vitalik Buterin, has just formulated a major scientific proposal. It aims to permanently eradicate the forced liquidation mechanism in DeFi. Published on June 1, 2026, on the ETHResearch platform, this conceptual model seeks to replace traditional debt architectures with financial structures based on option contracts.

Buterin’s model: replace debt with options

In a research post published Monday on ethresear.ch, Vitalik Buterin proposes building index-tracking assets. These would rely on option contracts rather than the debt structures that currently underpin much of DeFi.

The goal: allow users to gain exposure to a basket of crypto assets (similar to an index fund) without ever risking a sudden liquidation.

Rather than instantly losing a position when prices move unfavorably, exposure would gradually diverge from a target allocation. This potentially makes the system more resilient during volatility.

Less dependence of DeFi protocols on oracles

Another key advantage concerns price oracles. These are data feeds that indicate to DeFi protocols the real-time value of assets. Most DeFi applications today rely on near real-time oracle updates. These can become targets of manipulation during turbulent periods.

In his note, Buterin states that an option-based system could work with slow oracles, similar to those used by prediction markets. This would reduce the risk that DeFi protocols act on incorrect price data. This would be particularly relevant for algorithmic stablecoins, historically vulnerable to these failures.

Limits not to ignore

Buterin himself acknowledges that this system would require regular portfolio rebalancing. He also specifies that it remains uncertain whether these adjustments can be made economically enough to avoid excessive transaction costs or slippage.

The concept therefore remains theoretical. It has not yet been implemented on Ethereum. However, it illustrates a growing willingness to rethink the foundations of DeFi by prioritizing robustness over leverage.

With this proposal, Vitalik Buterin continues his reflection on the structural weaknesses of DeFi. The question now is whether this vision can be turned into a viable solution for the Ethereum ecosystem. If this system were to emerge, it could redefine how millions of users interact with decentralized finance.