If you’ve ever watched your DeFi position get liquidated during a flash crash, Vitalik Buterin has been thinking about you. The Ethereum co-founder published a proposal on EthResearch on June 1 that would fundamentally rearchitect how decentralized lending works, swapping out the collateralized debt positions that power most of DeFi today for an options-based system designed to absorb market shocks instead of amplifying them.

The core idea: instead of borrowers posting collateral that gets forcibly sold the moment prices dip below a threshold, users would hold options contracts tied to asset indices. In English: rather than a hair-trigger liquidation mechanism that punishes you for temporary volatility, the system would give positions room to breathe.

How the options model actually works

Buterin’s proposal replaces the traditional CDP mechanism with options contracts. Instead of maintaining a real-time collateral ratio monitored by oracles, users would gain exposure through options tied to broader asset indices. The architecture shifts the risk model from “sell now or the protocol breaks” to something closer to how traditional options markets handle downside exposure, with defined risk parameters built into the contract itself.

One of the more notable design choices is a reduced reliance on real-time oracles. Buterin’s model would instead use slower, more stable price feeds, trading speed for security. The logic is straightforward: if your system doesn’t need to react in milliseconds to price changes, it’s much harder for someone to trick it with a flash loan attack.

The proposal also extends beyond lending into algorithmic stablecoins. Buterin envisions stable-value instruments that aren’t pegged to a single fiat currency like the US dollar but instead track personalized baskets of value, allowing users to theoretically hold a token that maintains purchasing power relative to a custom mix of goods, services, or assets.

The catch: rebalancing slippage

Buterin isn’t pretending this is a solved problem. The proposal explicitly flags rebalancing slippage as a significant practical challenge. Options-based positions tied to indices need periodic rebalancing, and every time you rebalance, you’re executing trades. Those trades incur slippage, especially during the exact volatile conditions this system is designed to handle.

Why this matters for the broader DeFi ecosystem

Buterin has been increasingly vocal about what he calls “low-risk DeFi.” In a September 2025 blog post, he argued that low-risk DeFi frameworks are crucial for the sustainable economic backbone of Ethereum’s ecosystem, comparing this necessity to how advertising revenue supports Google’s broader portfolio of initiatives.

Buterin’s proposal is more ambitious than existing patches on CDP architecture such as gradual liquidations, dynamic collateral ratios, and insurance funds. It suggests the architecture itself needs to change.