Vitalik Buterin proposes options-based synthetic assets to avoid liquidations

Ethereum co-founder Vitalik Buterin has proposed a new framework for building synthetic assets and algorithmic stablecoins that replaces forced liquidations with options as the foundational primitive, instead of debt-based positions. In a post published Monday to the Ethereum research forum, Buterin argued that the core vulnerability of existing algorithmic stablecoin designs is their dependence on real-time oracles — price feeds that must provide binding, instantaneous valuations to trigger liquidations when collateral falls short. That dependence, he wrote, creates a single point of failure that is both technically difficult to secure and practically impossible to protect against oracle manipulation with any meaningful recourse window.

Buterin's solution strips out liquidations altogether. The system splits one unit of ETH into two assets — a protected position and a leveraged position — tied to a given strike price and maturity date. At maturity, an oracle resolves the index value and distributes ETH between the two holders according to a fixed formula. Because the two positions always sum to exactly one ETH, the design eliminates the insolvency risk associated with undercollateralized debt positions.

The practical consequence is that instead of sharp, binary liquidation events, a user's exposure to the underlying index drifts quadratically as prices move toward the strike price. Buterin acknowledged this is a meaningful tradeoff, since the user must actively rebalance positions before maturity to maintain their desired exposure. However, he argued the drift is more manageable than it appears, and that tolerating a standard deviation of roughly one to four percent per year is underrated given that fiat currencies themselves move by more against each other. Somewhere, a central banker is mildly offended.

A key structural advantage of the design is that it can run on "slow oracles" of the type prediction markets use, which allow for extended dispute windows and human recourse in the event of manipulation. In his view, it's a better option than the real-time price feeds that current liquidation-based protocols require. Buterin wrote that he would feel significantly safer holding algorithmic stablecoins within this architecture than in anything that depends on an oracle that must provide real-time answers.

The open question he flagged is whether rebalancing can be made sufficiently slippage-resistant to remain competitive. He suggested the solution lies in treating rebalancing as one-sided market making rather than instant execution, exploiting the fact that users typically have very low time preference for the exact timing of a rebalance. Patience, in other words, is a feature.

The proposal connects directly to a broader thesis Buterin has been developing. In February, The Block reported that he had called for prediction markets to shift from speculative bets toward AI-powered hedging tools and personalized price-index baskets — an architecture he tied to the possibility of entirely replacing fiat-pegged stablecoins. The new research post introduces the onchain mechanics that could underpin that vision.

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