Ethereum’s State-Cutting Proposal Reopens UTXO Design Dispute With Cardano

An Ethereum Foundation researcher has proposed a mechanism that could cut the network’s permanent state storage requirements for simple payments by roughly 99.8%, a design change that has drawn a public accusation of intellectual borrowing from Cardano founder Charles Hoskinson. The dispute, playing out largely on social media, underscores the absence of a formal standards process governing how large blockchains borrow architectural ideas from one another.

The proposal, put forward by researcher Toni Wahrstätter, introduces native unspent transaction outputs (UTXOs) as temporary, one-shot payment objects on Ethereum, rather than the permanent account entries the network currently creates. Under Ethereum’s existing account-based model, the first transaction sent to a new address permanently adds a state entry that the network must store indefinitely.

A technical fix aimed at state bloat

Wahrstätter’s argument is that many straightforward payments do not require this permanent storage and can instead be verified from historical transaction data, leaving only a minimal “spent” marker on-chain. According to the proposal, a new Ethereum account typically consumes between 100 and 150 bytes of state, whereas a native UTXO would leave behind approximately 0.3 bytes — a reduction of around 99.8%.

The concept draws directly on Bitcoin’s UTXO model, in which each transaction output is created once, spent once, and then removed from the network’s active state. Wahrstätter’s proposal builds on the forthcoming Frame Transactions standard, EIP-8141, and is positioned as consistent with Ethereum co-founder Vitalik Buterin’s “Lean Ethereum” roadmap, which seeks to simplify the protocol and slow the growth of on-chain state. Wahrstätter credited Buterin with encouraging discussion of the idea. The proposal remains at the research stage; no formal Ethereum Improvement Proposal has been submitted, and any adoption would require extensive community review and, ultimately, a hard fork.

Hoskinson claims Cardano precedent

Hoskinson responded on X, arguing that Ethereum developers are effectively replicating Cardano’s Extended Unspent Transaction Output (EUTXO) architecture without acknowledging its origins. He characterised EUTXO as one of the most significant innovations in smart contract technology and said Ethereum has repeatedly failed to credit Cardano’s contributions to the field. He also noted that Cardano once ranked third by market capitalisation and served millions of users.

The exchange highlights a recurring friction point in blockchain development: there is no binding intellectual-property or attribution framework governing how open-source protocols adopt one another’s design patterns, leaving such disputes to play out publicly between founders and researchers rather than through any formal standards body.

Markets show little reaction

Despite the public disagreement, price action in both assets was largely unaffected. Cardano’s ADA traded near $0.17, having gained 12.5% over the preceding week, while Ethereum changed hands around $1,754, with a market capitalisation of roughly $211 billion.

For institutional observers, the proposal’s practical significance lies less in the attribution dispute than in what it signals about Ethereum’s longer-term infrastructure priorities. A meaningful reduction in state growth would lower the cost of running full nodes and could ease concerns among validators and enterprise users about the network’s long-term storage and hardware requirements — factors that feed directly into assessments of Ethereum’s scalability as institutional activity on the network expands.

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