Ethereum researchers have published a paper proposing native UTXO (Unspent Transaction Output) support for the network\u2019s execution layer, and Cardano founder Charles Hoskinson responded on X with a pointed claim: Cardano has been running this model for over a decade, and Ethereum is arriving late without acknowledgment.<\/p>\n
In a July 7 tweet, Hoskinson said: \u201cIt\u2019s not like I\u2019ve been literally working on this topic for over 10 years of my life and launched a cryptocurrency that was number three on CoinMarketCap with millions of users to deploy it.\u201d<\/p>\n
This war of words between Cardano and Ethereum comes as ADA is outperforming ETH on the day, up +0.7% over the past 24 hours, compared to Ethereum\u2019s +0.4% over the same timeframe.<\/p>\n
It’s not like I’ve been literally working on this topic for over 10 years of my life and launched a cryptocurrency that was number three on coinmarketcap with millions of users to deploy it. It’s literally a crime in the Ethereum inner circles to mention Cardano. EUTXO is the\u2026 https:\/\/t.co\/3F3l6cg0JE<\/a><\/p>\n \u2014 Charles Hoskinson (@IOHK_Charles) July 7, 2026<\/a><\/p>\n\n The research document identifies a structural cost in Ethereum\u2019s account model: every time a new address receives ETH or an ERC-20 token for the first time, it generates permanent state storage that accumulates indefinitely as the user base grows.<\/p>\n The paper proposes using native UTXOs specifically for simple payment transactions that do not require persistent account storage, projecting a roughly 99.8% reduction in permanent state for those payments.<\/p>\n The key mechanical distinction is that a UTXO is created once, spent once, and then removed. It leaves no residual footprint on the network\u2019s state. Critically, the proposal does not replace Ethereum\u2019s existing account model; smart contract activity would continue operating exactly as it does today.<\/p>\n This is a targeted patch for a specific scalability problem, not a wholesale architectural shift. The paper has not been formalized as an Ethereum Improvement Proposal (EIP) and carries no confirmed implementation timeline.<\/p>\n Double top or Double bottom<\/p>\n Which one will play out for $ETH<\/a>? pic.twitter.com\/L3arwnGl3I<\/a><\/p>\n \u2014 Ted (@TedPillows) July 9, 2026<\/a><\/p>\n\n Hoskinson stated on X that he has spent over ten years developing Cardano\u2019s eUTXO (Extended Unspent Transaction Output) model, which showcases a scalable proof of concept.<\/p>\n Unlike Bitcoin\u2019s UTXO, Cardano\u2019s design incorporates datums, redeemers, and script context, allowing smart contracts to function as deterministic local state machines without needing to access the global blockchain state.<\/p>\n This determinism is key, as a transaction\u2019s validity relies solely on its inputs, leading to predictable fees and enhanced parallelism across UTXO sets, while minimizing front-running risks.<\/p>\n Hoskinson highlighted that Cardano achieved the third position on CoinMarketCap, with millions of users testing this model\u2019s viability.<\/p>\n It\u2019s important to note that the ten-year timeline pertains to research and design, while Cardano\u2019s smart contract functionality, fully utilizing eUTXO, launched with the Alonzo upgrade in September 2021 and was developed through IOHK\u2019s research pipeline.<\/p>\n\n (SOURCE: DefiLlama<\/a>)<\/p>\n DISCOVER:\u00a0Best Meme Coin ICOs to Invest in 2026<\/a><\/strong><\/p>\n Dori, a figure in the Cardano community, asserted that Ethereum\u2019s permanent state growth creates structural weaknesses by increasing node storage costs and concentrating validation power.<\/p>\n He linked Ethereum\u2019s account model to issues like MEV, reentrancy attacks, and limits on parallel transaction processing, suggesting that eUTXO design effectively addresses these problems.<\/p>\n From a neutral perspective, both Ethereum and Cardano tackle similar challenges of state locality and transaction processing, albeit through different approaches. Other projects, like Ergo and Nervos CKB, have also adopted UTXO-style models.<\/p>\n The debate over blockchain architecture focuses on trade-offs relevant to specific use cases. Meanwhile, Ethereum\u2019s account model offers an advantage in synchronous DeFi composability, which is crucial for complex multi-step financial transactions.<\/p>\n EXCLUSIVE: Earn $10 USDC Via Binance Sign-Up<\/span><\/a>\n<\/p>\n $ADA<\/a> Big rally the past week and the stand-out within the majors.<\/p>\n Usually coins like these moving does tend to be a decent sign for overall altcoin risk appetite, but I’d want to see a follow up leg to properly confirm this.<\/p>\n One leg up is generally met with a decent amount of\u2026 pic.twitter.com\/0iUDYQF0Xt<\/a><\/p>\n \u2014 Daan Crypto Trades (@DaanCrypto) July 6, 2026<\/a><\/p>\n\n The debate lands at a moment when Cardano is pursuing its most significant throughput upgrade yet. Hoskinson has said the planned Leios upgrade could increase Cardano\u2019s transaction throughput by up to 60 times, a level he argues would put the network\u2019s processing speed on par with the XRP Ledger.<\/p>\n He also flagged that progress depends on governance approval from the Cardano community, introducing a procedural dependency that makes the timeline uncertain.<\/p>\n If Leios delivers on that projection, it would substantially close the performance gap that has historically been cited as a constraint on ADA-based DeFi adoption.<\/p>\n Whether Ethereum\u2019s native UTXO research ever moves from paper to protocol, the conversation it has sparked is already doing work, forcing a precise comparison of two mature blockchain architecture philosophies that have been talking past each other for years.<\/p>\n EXPLORE:\u00a0Best Crypto Presales With Asymmetric Upside in the Current Market<\/a><\/strong><\/p>\n The post Cardano\u2019s eUTXO Model Takes Center Stage as Ethereum Eyes UTXO Adoption<\/a> appeared first on 99Bitcoins<\/a>.<\/p>","protected":false},"excerpt":{"rendered":" Ethereum researchers have published a paper proposing native UTXO (Unspent Transaction Output) support for the network\u2019s execution layer, and Cardano founder Charles Hoskinson responded on X with a pointed claim: Cardano has been running this model for over a decade, and Ethereum is arriving late without acknowledgment. In a July 7 tweet, Hoskinson said: \u201cIt\u2019s […]<\/p>\n","protected":false},"author":0,"featured_media":195128,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-195127","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-discovery"],"_links":{"self":[{"href":"https:\/\/mycryptomania.com\/index.php?rest_route=\/wp\/v2\/posts\/195127"}],"collection":[{"href":"https:\/\/mycryptomania.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mycryptomania.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/mycryptomania.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=195127"}],"version-history":[{"count":0,"href":"https:\/\/mycryptomania.com\/index.php?rest_route=\/wp\/v2\/posts\/195127\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mycryptomania.com\/index.php?rest_route=\/wp\/v2\/media\/195128"}],"wp:attachment":[{"href":"https:\/\/mycryptomania.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=195127"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mycryptomania.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=195127"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mycryptomania.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=195127"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}What the Ethereum Paper Actually Proposes<\/h2>\n
Hoskinson\u2019s Prior Art Argument<\/h2>\n
Cardano Community Reaction and the Convergence Argument<\/h2>\n
Leios and What Comes Next for Cardano<\/h2>\n