Death to Liquidations: Vitalik Pitches Options-Based DeFi

Ethereum co-founder Vitalik Buterin has proposed a radical architectural change for decentralized finance (DeFi). He has suggested that the ecosystem move away from debt-based models like Collateralized Debt Positions (CDPs) in favor of options-based synthetic assets.

The proposal, published on the Ethereum Research forum, aims to eliminate the catastrophic "flash liquidation" events that have historically plagued DeFi users during high-volatility market crashes.

The flaw of real-time oracles

In current DeFi protocols, synthetic assets, such as algorithmic stablecoins, rely heavily on debt and automated liquidations. If the value of a user's collateral drops below a specific threshold, the system force-liquidates the position to prevent protocol insolvency.

According to Buterin, this mechanic creates a dangerous dependency on real-time price oracles, which are highly vulnerable to manipulation and flash loan attacks:

"Real-time oracles are very hard to make safe... You cannot use what is by far the most effective technique to make a safe and cheap oracle: put a prediction market in front of a safe but expensive oracle, and only use that oracle in case of serious disagreement."

How options-based DeFi works

Buterin’s new design completely removes the concept of liquidation. Instead of borrowing against debt, users mint token pairs by locking up a trustless asset like ETH. These tokens act exactly like traditional financial options with a set strike price (S) and a maturity date (M).

Instead of a sudden, global "you get liquidated" shock during sharp market moves, a user’s financial exposure changes smoothly and predictably.

Buterin suggests building specialized, one-sided market-making structures tailored for users with low time preference, allowing them to rebalance slowly over days rather than seconds.

A trade-off worth making?

This design might not serve well as a precise "accounting stablecoin" due to minor annual deviations (1−4%), but Buterin argues that the security trade-off is highly favorable for users prioritizing long-term capital preservation over absolute, real-time stability.

"I would feel much safer holding algostables inside something like this," Buterin concluded, "than in something that depends on an oracle that has to give real-time answers."