Ethereum co-founder Vitalik Buterin proposes replacing CDP-based lending with options contracts to eliminate liquidation cascades in DeFi.
If you have ever watched a 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. It swaps out the collateralized debt positions (CDPs) 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 practical terms, rather than a hair-trigger liquidation mechanism that punishes temporary volatility, the system would give positions room to breathe.
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 design choice 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 does not need to react in milliseconds to price changes, it is 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 are not pegged to a single fiat currency like the US dollar. They would instead track personalized baskets of value. This would allow users to theoretically hold a token that maintains purchasing power relative to a custom mix of goods, services, or assets.
The DeFi lending market has been plagued by liquidation cascades during volatile periods. In March 2020, MakerDAO saw $4 million in collateral auctioned at zero bids during the COVID crash. More recently, the LUNA collapse triggered $60 billion in losses partly because of rigid CDP mechanics. Buterin’s proposal directly addresses the structural fragility that these events exposed.
Buterin is not 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 are executing trades. Those trades incur slippage, especially during the exact volatile conditions this system is designed to handle.
Key insight: The solution to liquidation risk introduces a new form of execution risk. The question is whether the trade-off is worth it.
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. He compared 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.
The proposal creates a concrete question for anyone building or trading in DeFi: do you bet on incremental improvements to existing CDP systems, or do you prepare for a structural shift toward options-based lending?
For now, the proposal remains a theoretical framework. Given Buterin’s influence on Ethereum development and the growing frustration with liquidation mechanics, this is not a paper to ignore. The DeFi lending market processes over $20 billion in total value locked across major protocols. A structural change to how that value is secured would ripple through every layer of the ecosystem.
Practical rule: Watch for protocol teams that begin citing this proposal in their own research. That is the signal that the idea is moving from theory toward implementation.
Prepared with AlphaScala research tooling and grounded in primary market data: live prices, fundamentals, SEC filings, hedge-fund holdings, and insider activity. Each story is checked against AlphaScala publishing rules before release. Educational coverage, not personalized advice.