A recent post on the X (formerly Twitter) by Vitalik Buterin (one of the co-founders of Ethereum) includes an unflinching look at the flaws of the current decentralised stablecoin models. Buterin feels that after so many years of effort developing decentralised stablecoins, neither DAI nor Djed has been able to eliminate the fundamental issues which have held back the true decentralised nature of these assets from moving forward into full decentralisation outside of the traditional finance sector. While stablecoins overall have grown significantly since the passing of the Genius Act in 2025 and now exceed $316 billion, most of the expansion has come from large centralized entities backed by fiat currency. Decentralized alternatives, meanwhile, have stagnated.
Breaking the Dollar Chains
Buterin’s primary concern centers on the industry’s addiction to the U.S. dollar. Currently, the vast majority of “decentralized” stablecoins are merely on-chain mirrors of the greenback. While this offers short-term utility, Buterin argues it defeats the core purpose of cryptocurrency: resilience against nation-state failures.
“Tracking USD is fine short term, but imo part of the vision of nation state resilience should be independence even from that price ticker,” Buterin wrote. He posed a provocative question: “On a 20-year timeline, well, what if it hyperinflates, even moderately?”
To solve this “Indexing Problem,” Buterin urged developers to be more ambitious. Instead of simply pegging to fiat currency, he suggested that future stablecoins should track resilient indexes such as a global basket of commodities, energy prices, or a custom Consumer Price Index (CPI). When the value of the U.S. dollar declines, the value of the asset will be able to retain its purchasing power as a result of the asset’s price appreciation.
The Oracle Dilemma
The second structural flaw identified by Buterin is the “Oracle Design Problem.” Decentralized stablecoins rely on oracles—data feeds that bring off-chain information, like prices, onto the blockchain. However, these systems remain a critical vulnerability.
Buterin pointed out that current decentralized oracles are susceptible to “governance attacks.” If a hostile actor acquires enough capital, they can effectively bribe the system or buy enough voting power to manipulate the data feed. Buterin expressed that reliance on a financialized form of governance (where dollar amounts represent the ability to vote) is dangerous because it creates a situation in which security exists only while attack costs are sufficiently high, but this defense may not hold against adversaries with deep pockets.
The Staking Yield Trap
The most pressing economic issue may be the conflict between stablecoin assets for backing collateral against holding Ether and receiving a yield through proof-of-stake (POS) on the blockchain. In the current proof-of-stake environment, the act of holding Ether generates passive income, or staking rewards. This means that stablecoin protocols will face greater competition in attracting user funds as they cannot compete on the staking yield. As a result, users are not incentivized to use ether as collateral when they can earn a guaranteed return of 4-5% on their stake.
When stablecoin protocols try to compensate for this by using liquid staking derivatives (LSDs) as collateral, they introduce “slashing risk”—the possibility that the underlying ETH could be penalized if validators misbehave. Buterin highlighted this as a complex trade-off between safety and attractiveness. He suggested that developers might need to accept lower yields, perhaps as low as 0.2% APY, to ensure the system remains robust and solvent during market volatility.
A Sector Left Behind?
The context for Buterin’s warning is a market that has fundamentally changed over the last year. The introduction of the Guiding and Establishing National Innovation for U.S. Stablecoins Act (GENIUS Act) brought about significant changes in the way regulations for stablecoins were structured as of July 2025. The Genius Act set up the framework for Circle and Paxos, two of the most centralized providers within the emerging industry, to fulfil the strict requirements of the banking-style audits mandated by the Act. Since the passage of this Act, the need for fiat-backed stablecoins has sky-rocketed. On the other hand, many of the decentralized issuers, such as DAI, have yet to get a foothold in this space and have experienced very little growth relative to their competitors within the centralized space. For example, DAI’s market cap has remained near $5.3 billion since around June of 2023, which is significantly less than its all-time high of more than $10 billion set during the bull market of 2021.
The Ghost of Terra Luna
The collapse of UST, an algorithmic stablecoin, lost investors over $34 billion and trails all conversations on the subject like a dark ghost. Buterin discontinues this ghostly imagery to remind us that the terms ‘algorithmic’ and ‘decentralized’ do not make anything inherently secure. In this regard, decentralized finance, or “DeFi,” still has to solve many difficult engineering problems to truly differentiate itself from traditional finance (or “TradFi”) and remains trapped in what Buterin calls a ‘grey zone’ — dependant on the very same traditional banking institutions that it sought to replace while still being less efficient.
