# Cartesi Ecosystem Updates July, 2026 

> Let’s dive into the latest updates of the Cartesi Ecosystem.

**Published by:** [Cartesi](https://paragraph.com/@cartesians/)
**Published on:** 2026-08-12
**Categories:** linux, cartesi, news, update, blog, tech
**URL:** https://paragraph.com/@cartesians/cartesi-ecosystem-updates-july-2026

## Content

July packed in a lot. Real progress landed on several of the architecture components and the fraud proof system, our developer advocates kept testing and spreading the word on podcasts and Spaces, and the penguin mascot showed up everywhere, from Malaysia Blockchain Week to Ethereum's birthday. Here's your full roundup of what happened across the Cartesi ecosystem this past month. Tech On the tech side, this month's headlines were advancements to several components strengthening the fraud proof system, following the emergency withdrawal mechanism that shipped previously. Rollups Contracts support for deposit refunds is in progress: work is underway to add deposit refunds for foreclosed applications, enabling the system to distinguish between finalized and non-finalized deposit inputs and route refunds accordingly. The proposal also modularizes refund output building into a dedicated contract, simplifies input box handling, and introduces interface improvements to streamline deployment and contract integration. The fraud proof system, our Permissionless Refereed Tournament (PRT), advanced with work on claim staging, adding a safety window before tournament results are finalized. This gives independent sentries time to verify tournament results before claims are finalized, while still allowing fast settlement when all sentries agree. The change strengthens the security of the fraud-proof protocol while preserving fast settlement in the common case. On the developer experience side, Cartesi’s TypeScript tooling has been reorganized to make integrations clearer and easier to maintain. The Rollups Node API client now ships as @cartesi/client, while the React bindings have been renamed to @cartesi/react, accompanied by a new shared codec package for encoding and decoding Rollups data. Alongside the package reorganization, the releases align types with the latest Rollups Node API schema, improve query handling, and streamline how developers build applications that interact with both the Rollups Node API and Rollups smart contracts. For a bird's-eye view, current architecture priorities are tracked and periodically updated on our Technical Evolution Plan (TEP) website page, so that's your go-to source to know where the technical teams are spending their time and effort. Developer Advocacy This past month, our developer advocates have been testing components of the architecture and feeding their feedback straight into what ships next, all in service of the same goal: lowering the barrier to building onchain with Cartesi and expanding what's possible on this compute layer for production-ready DeFi products. That goal is also why Developer Advocacy Lead João Garcia's three-part series, "Three Levels Deep," is worth a watch if you missed it. Each episode breaks down a different Cartesi concept at three levels of depth: simple enough for a child, detailed enough for an engineering student, and rigorous enough for a PhD researcher. So far the series has covered Cartesi's execution environment, app-specific rollups, and DeFi financial modeling. Explaining each concept three ways means builders and researchers get an entry point wherever they're starting from. Catch the full series on X and YouTube, then head to docs.cartesi.io to start building. And as contributor Claudio Silva puts it, that means "no tension in the neck" because it's a stack you already know. Claudio Silva 🐧 @claudioengdist And Cartesi also *massage* web3 so builders can smoothly start building using the stack they are already familiar with. *No tension* in the neck! 1 11:53 AM • Jul 30, 2026 Ecosystem In July, fellow Cartesian Felipe Argento was busy, publishing three articles. For anyone who missed the context, he previously stepped down from the Foundation Board to build the product that makes Cartesi click. He put it plainly on X: nobody is going to grasp what this stack makes possible from a diagram. They'll understand it through a product that's actually great. Read his thread. A huge TVL sitting exposed to hacks is a problem. One party holding the power to walk off with it is another. In his latest piece, Felipe breaks down why Cartesi's Emergency Withdrawal mechanism solves both, and why it beats a security council model. Felipe Argento 🐝🐧 @felipeargento x.com/i/article/2080… 17 2:38 PM • Jul 23, 2026 And here's why it's important, as a tl;dr: Guilherme Dantas 🐧 @guidanoli Great writeup, as always, Felipe! :-) I, too, am SUPER excited for the new emergency-withdrawal feature. Users (and devs) can now sleep with one thing in mind: If the app ever breaks, funds will be recoverable from the last-finalized app state. 10 5:51 PM • Jul 23, 2026 Decentralization alone doesn't attract users or institutions. What moves things forward is fast, unapologetic, centralized actors building on top of decentralized infrastructure. Applied to Cartesi: the tech stack stays decentralized, but growth comes from intentional builders at the edges, each with their own reasons, collectively strengthening the shared infra. Felipe Argento 🐝🐧 @felipeargento x.com/i/article/2074… 21 2:02 PM • Jul 8, 2026 Crypto's real-world impact has mostly come from pressuring TradFi to improve, not from decentralizing finance itself. That's not enough. Without real decentralization and accessibility, crypto loses its edge. The fix: apps that feel like TradFi but run decentralized under the hood, exactly what Cartesi's appchain rollups enable. In a nutshell, said in a more marketable way: DeFi needs Cartesi. Cynthia 🐧 @CryptoCyn It had to be said: DeFi needs @cartesiproject Felipe Argento 🐝🐧 @felipeargento x.com/i/article/2072… 26 4:56 PM • Jul 2, 2026 And implicitly, that's basically a shoutout to Linux onchain: Erick de Moura @erickdemoura Linux: freedom to write anything Ethereum: freedom to run without trust Cartesi: both at once Cartesi @cartesiproject With free software, you have freedom. With Cartesi, you have the freedom to build onchain using the programming languages and software stack of your choice. 12 3:19 PM • Jul 22, 2026 Community On the community front, July brought us two big events. The obvious one: the World Cup final, where Spain became world champion, and we had plenty of happy contributors cheering. But the one that matters most to us: Ethereum's 11th birthday. Both times, our penguin celebrated cheerfully. See for yourself the tribute paid to Ethereum. We're proud to keep building in this ecosystem, complementing Ethereum with more compute power and more design space while building on the security and decentralization it provides: Cartesi @cartesiproject Happy birthday, @ethereum! Proud to be building for the long haul in this ecosystem. More compute power and more design space, thanks to a full Linux OS onchain, all while inheriting Ethereum's security and decentralization. Perfect match. Here's to many more years together. 33 1:02 PM • Jul 30, 2026 And what's more, we even got to mint CTSI on the infinite pixel canvas started by Ethlabs for the occasion. Check it out here. This month also saw everyone gathering in Kuala Lumpur for Malaysia Blockchain Week, a two-day event connecting Southeast Asia's Web3 builders, investors, and projects. Our contributor Cynthia Gliga was on the ground, and shared a quick clip touring the venue: Cynthia 🐧 @CryptoCyn Walk with me through the @MalaysiaBCW venue, live from Kuala Lumpur The Web3 ecosystem is still very much alive, and it’s exciting to experience the energy in person. Come say hi to chat about @cartesiproject, Linux-powered rollups, penguins , and everything in between. 19 6:17 AM • Jul 29, 2026 Media On the media front, Developer Advocate Shaheen Ahmed responded to Dar Blockchain's invitation and joined their X Space to unpack why battle-tested software could prevent many of the exploits we're seeing, what it's like to build onchain with a Linux execution layer, and how DeFi could benefit from what Cartesi has to offer. Catch up on the recording, or read the full recap by host Youssef Seghaier: Youssef Seghaier @YoussefS721 Billions lost to reentrancy attacks, oracle failures, flash loan exploits. But what if the real problem isn't the developers, it's the EVM itself? We just wrapped a Space with @cartesiproject and @riseandshaheen on this exact question. 10 2:04 AM • Jul 31, 2026 And Dev Advocacy Lead João Garcia continued to make headlines with the podcast Web3 CMO Stories, hosted by Joeri Billast. Make sure to watch the full episode on YouTube, but in the meantime, here's a throwback to one meaningful clip on why Linux onchain matters: Cartesi @cartesiproject Why Linux onchain matters? It already runs underneath most of what's built. That's likely how blockchains get integrated going forward too: invisibly, as infra we don't realize we're using. Plus, it gives all devs access to blockchain capabilities they couldn't tap into before. 21 1:03 PM • Jul 21, 2026 Cartesi also joined TikTok this month. The channel is live and content is dropping regularly. Hit follow, and ask your TikToker frens to do the same to help us grow. Cartesi @cartesiproject It's official: we're now on TikTok. Bite-sized videos from our contributors, quick explainers on the tech, podcast moments with the team, and some fun in between. Go explore, hit follow, and tell us what you want to see next: tiktok.com/@cartesiprojec… 19 1:01 PM • Jul 23, 2026 Cartesi's CoinMarketCap community keeps expanding, and this month we’re celebrating having crossed 90,000 followers. The platform also periodically generates AI-powered articles covering our updates, breaking down what it means to build with Linux onchain, backed by Ethereum's security. Follow our profile to be part of it. Another place we're showing up: our tech updates also receive a monthly spotlight in L2BEAT's recap, more eyeballs on a respected outlet. Read this month's article here and browse previous editions to catch up on everything. L2BEAT 💗 @l2beat News from @cartesiproject Deposit refunds for foreclosed Rollups applications move forward. The Fraud Proof System advances with claim staging. Rollups developer tooling is reorganized with new client packages. Felipe Argento publishes new research on emergency l2beat.com Monthly Updates - July 2026 Update - L2BEAT L2BEAT's monthly overview of the Ethereum scaling ecosystem: key news, protocol updates, and metrics. 11 3:23 PM • Aug 3, 2026 And if you haven't already, hit subscribe on the Cartesi YouTube channel. Shorts, demos, and new tutorials drop there constantly. As tradition goes, these ecosystem updates also get included in the Cartesians' monthly newsletter, and once again, the fastest reader is rewarded with another merch pack. Subscribe if you haven't already, and keep an eye out for the drop. That’s a Wrap This was July: quiet wins on the architecture, loud wins across podcasts, Spaces, and the world stage, with a community penguin that never sat still. Now, Cartesi enters August with the foundation in place, working hard toward the same mission: becoming the verifiable compute layer DeFi has been waiting for. DeFi is the floor, not the ceiling, as co-founder Erick de Moura has put it. We look forward to also covering what's getting built on that floor over the next few months. As always, for live updates, join us on Discord, make sure you're following us on X, and come chat and hang out with the community on Telegram.

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