For years, Ethereum's scaling narrative has been dominated
by Layer 2 rollups. The base layer was supposed to stay simple while L2s
handled the heavy lifting.
Vitalik Buterin is now challenging that assumption.
In a series of posts and updated roadmap documents this
month, Ethereum's co-founder outlined a new vision that borrows a page from
Bitcoin's playbook — literally. The proposal: introduce a native UTXO-style
system alongside Ethereum's existing account-based model.
The Problem: Ethereum Is Getting Too Heavy
Here's the issue Ethereum has been carrying for years. Every
new account created on the network makes it a little heavier to run. Thousands
of computers worldwide hold a full copy of Ethereum, and each one stores the
growing state of accounts and storage entries. That record doesn't shrink.
Ethereum's account-based
state can grow as new accounts and storage entries are created, increasing the
amount of persistent state that nodes must manage. Buterin has spent much of
2026 arguing that Ethereum's deepest bottlenecks aren't in execution speed or
transaction fees. They're in how the network stores data. The side networks
built on top — the rollups — are not the main problem.
The Solution: Bitcoin's UTXO Model
So how could Ethereum reduce the amount of permanent state
created by simple payments? One proposal looks to a design concept that Bitcoin
has used since 2009.
Bitcoin doesn't use accounts. Instead, it tracks unspent
transaction outputs, or UTXOs. Think of them like physical coins. Once someone
spends one, almost nothing stays behind. Under the proposed design, spent
payment objects would leave only a minimal amount of persistent state,
dramatically reducing the storage burden compared with Ethereum's account-based
model.
The proposal illustrates the difference at large scale,
showing how persistent account-based state can become substantially heavier
than a UTXO-style payment model.
A Hybrid Approach, Not a Replacement
Ethereum isn't abandoning its account model. Instead,
researchers are proposing a hybrid system.
Under the proposal, Ethereum could support both models side
by side. Simple payments would move into a lightweight UTXO-style state class,
effectively vanishing after they're spent. Smart contracts and complex
applications would stay in the traditional account system where they need
persistent storage.
Ethereum Foundation researcher Toni Wahrstätter published
the Native UTXOs proposal in July, and Buterin has subsequently highlighted the
UTXO and Utreexo ideas as part of Ethereum's evolving scaling research.
Why This Is Different From Previous Scaling Plans
Buterin's latest vision goes well beyond "make blocks
bigger."
The Ethereum Foundation's Strawmap, published earlier in
2026, outlines a much broader shift. The network would eventually move toward:
- Native
rollups — ZK-proof technology built directly into the base
protocol, not just as L2s
- Specialized
state structures — Different types of data get different storage
mechanisms
- Quantum-safe cryptography — Preparing for the
eventual arrival of powerful quantum computers
- Formal
verification — Mathematical proofs of security for critical
components
The broader roadmap envisions a dramatic increase in
Ethereum's base-layer and Layer-2 capacity while preserving decentralization.
Not Everyone Is Happy
The borrowing from Bitcoin hasn't gone unnoticed. Cardano
founder Charles Hoskinson argued that the proposal resembles ideas already used
in Cardano's EUTXO architecture.
Ethereum's research, however, explicitly draws on Bitcoin's
UTXO model and Utreexo research, making the comparison more nuanced than a
simple claim of copying Cardano.
But Buterin has been publicly gracious about the source of
the ideas, specifically crediting Bitcoin developer Tadge Dryja and the Utreexo
project. "Utreexo" lets computers verify coins without keeping the
full list, and Buterin said it directly influenced Ethereum's thinking.
In his August 16 post on X, he acknowledged Bitcoin
developers for pioneering concepts now shaping Ethereum's research, saying the
ecosystem could benefit from adopting the model.
What This Means for Ethereum Users
The proposed storage design could make simple payment use
cases substantially cheaper by reducing the amount of permanent state they
create.
But the timeline is long. None of these proposals have
launch dates. The architecture remains experimental, and some of it depends on
EIPs that are still in draft.
The bigger picture is that Ethereum's scaling strategy is
broadening. Instead of just layering more tech on top, the network is
rethinking its foundations. A Bitcoin-inspired UTXO approach could therefore
become one part of Ethereum's answer to a state-growth problem that is becoming
more important as the network scales.
CoinaiNews provides independent market analysis and
coverage of cryptocurrency, technology, and financial markets. The information
presented does not constitute financial advice.
0 Comments