Cardano founder Charles Hoskinson has attacked Ethereum’s latest storage proposal, saying the network is now exploring UTXO-style ideas that Cardano adopted years ago. The criticism followed the release of EIP-8141, or Frame Transactions, introduced by Ethereum researcher Toni Wahrstätter.
The proposal targets Ethereum’s expanding database footprint. Under the design, simple one-off Layer 1 transfers would no longer require full account information to remain permanently in active storage. Instead, those transactions could lean on historical blockchain records, while active storage keeps only a spent marker. Wahrstätter said this approach could cut unnecessary storage growth from basic L1 transfers by 99.8%.
A hybrid model is at the center of the debate
Ethereum has long used an account-based model, where the balance and state of each active wallet are stored directly. That structure works well for smart contracts, but storage demands rise as network activity grows. Cardano took a different route from launch, building on the Extended Unspent Transaction Output, or eUTXO, model. That framework extends Bitcoin’s UTXO architecture while supporting more advanced smart contract behavior.
Ethereum developers are not proposing a full migration to UTXO. The idea under discussion is narrower: apply UTXO-like mechanics to straightforward transfers while keeping the account system in place for decentralized applications. That boundary matters. Ethereum’s ecosystem includes thousands of DeFi protocols built around the current architecture, so any storage change has to avoid breaking existing applications or creating compatibility problems.
Old rivalries return as the proposal gains attention
Hoskinson wrote on X that Ethereum is examining concepts Cardano embraced years earlier. He also argued that there is an unspoken reluctance inside the Ethereum community to acknowledge Cardano’s technical contributions. His comments pushed the discussion beyond storage efficiency and back toward the long-running comparison between the two smart contract networks.
The exchange also revived attention on Hoskinson’s earlier history with Ethereum. He was one of the project’s co-founders before leaving in 2014 after disagreements with Vitalik Buterin over Ethereum’s long-term commercial direction. Now, with EIP-8141 in the Strawman discussion stage and Buterin watching its progress, the debate around account models, UTXO mechanics, and scaling design has sharpened again.
The proposal remains early and there is no decision on adoption. Even so, EIP-8141 has already turned into a broader argument over how Ethereum can control long-term growth without abandoning the infrastructure its current ecosystem depends on, while also reopening comparisons with the design choices Cardano made from the start.