EIP-7841: Hoskinson Accuses Ethereum of Plagiarizing Cardano and Calls It a Crime

Charles Hoskinson is not one to mince words. The founder of Cardano has fired back at Ethereum’s latest protocol improvement proposal, EIP-7841, which introduces mechanics inspired by the UTXO model — an architecture that Cardano has used since day one.

For Hoskinson, this is neither a coincidence nor a tribute: it is unacknowledged borrowing. And he has not hesitated to describe the situation as a “crime”, reigniting a deep technical and philosophical rivalry between two of the most closely watched blockchains in the market.

Beyond the controversy, a fundamental question emerges: who is truly innovating in the blockchain ecosystem, and who is following?

EIP-7841: When Ethereum Draws Inspiration from Cardano’s UTXO Model

EIP-7841 is an Ethereum protocol improvement proposal that aims to integrate elements of the UTXO (Unspent Transaction Output) model — an architecture popularized by Bitcoin and natively adopted by Cardano. Unlike the account-based model used by Ethereum, the UTXO model offers greater transaction predictability and more efficient parallel computation.

Cardano has made this architecture one of its core technical pillars since launch. Its extended implementation, eUTXO (Extended UTXO), enables smart contract execution while preserving the advantages of the original model. This is precisely what Hoskinson is calling out: Ethereum is now attempting to replicate what Cardano built and documented years ago.

On social media, Hoskinson responded with sharp irony, describing the situation as “literally a crime” — in the symbolic sense of intellectual appropriation without credit. The comment immediately set both blockchain communities ablaze.

A Technical Rivalry That Goes Beyond Mere Controversy

The debate between Ethereum and Cardano is nothing new. The two ecosystems have clashed for years over fundamental questions: speed of development versus academic rigor, rapid adoption versus formal robustness. Hoskinson, a former co-founder of Ethereum, understands the strengths and limitations of both protocols better than almost anyone.

What is particularly notable here is the dynamic this proposal reveals. Ethereum, the undisputed leader in smart contracts, is now turning to mechanics that its competitors developed first. This speaks to a broader maturity within the sector, where the best ideas eventually make their way across ecosystems — but it also highlights growing tension around the recognition of innovation.

Within the Cardano community, reactions are mixed. Some see this as a validation of IOHK‘s technical approach, while others are frustrated that Ethereum benefits from far greater liquidity and adoption to deploy concepts that Cardano has struggled to get traction with. The question of execution remains central: even the best architecture means little if the ecosystem does not follow.

What This Controversy Reveals About the State of Blockchain Innovation

Beyond the founder ego wars, EIP-7841 raises a structural question: is blockchain innovation still proprietary? In an ecosystem that is open source by nature, ideas flow freely. Bitcoin inspired Cardano on UTXO, Cardano extended it, and Ethereum may now be poised to adopt it in turn.

This cycle of mutual inspiration is, in reality, healthy for the industry. But it creates legitimate friction when credit is not explicitly given. The Ethereum community, for its part, has not yet officially responded to Hoskinson‘s accusations, and EIP-7841 remains at this stage a proposal under active discussion — far from being approved or deployed on mainnet.

For investors and developers tracking both ecosystems, this controversy is a reminder that the blockchain wars are fought just as much on the narrative front as on the technical one. And in this battle, Hoskinson has clearly chosen not to let the moment pass without repositioning Cardano as the original pioneer — a communication strategy that is as calculated as it is effective.