“We are missing applications that look, feel and work like TradFi applications - with the crypto properties smuggled in like a Trojan horse. This is where Cartesi comes in. The perfect Trojan horse. Or Trojan penguin.” Catch up on @felipeargento's latest piece, Worth the read. -> https://x.com/felipeargento/status/2072342871047274695 Repost: https://x.com/cartesiproject/status/2072364611681022158?s=20

Another Friday, another Cartesi Weekly. Let's get into it 🐧 A new CLI alpha is out and it's a meaningful step up: configuration problems are caught before startup, so there's no mid-session debugging when something's missing. Swing by our Discord for the command. Withdrawal testing is now available on Devnet, so the full withdrawal flow can be verified before going live and users can recover funds from a foreclosed app without surprises. Config files are now supported for the 'run' command, and a compatibility fix ensures the inspector endpoints keep working with the latest node version. This 2.0.0-alpha.35 release is aimed at core developers and testers, so feedback is welcome. GitHub release here: → https://github.com/cartesi/cli/releases/tag/%40cartesi%2Fcli%402.0.0-alpha.35 The Rollups Explorer is also updated to v2.0.0-alpha.3. It now warns before sending transactions to foreclosed apps and adds status indicators showing the state of any application at a glance. Small UX change, real difference when testing in the wild: → https://github.com/cartesi/rollups-explorer/releases/tag/v2.0.0-alpha.3 Recently, contributors also deployed fresh alphas of the rollups contracts and the PRT dispute system to the Sepolia test networks, with everything now verified on Etherscan for full transparency on what's being interacted with. Contract addresses are published and ready to use. One note for builders: the ‘DaveAppFactory’ address varies by network, but everything else is deployed to the same address across all supported chains. Grab the deployment addresses from the rollups channel in our Discord: → discord.gg/cartesi Also making the rounds this week: contributors shipped a Combinatorial Information Market demo built on Cartesi. Real-world forecasts don't exist in isolation. Inflation affects interest rates. Elections shape policy. A team winning its group reshapes the bracket. The demo models these connected variables as a single probabilistic system using deterministic, reproducible inference on Cartesi. Conditional forecasting. Exact probabilities. Junction trees. This is what serious onchain computation looks like: → https://x.com/cartesiproject/status/2069410399909564883 In ecosystem news, two Cartesi Foundation board members, Felipe Argento and Brandon Isaacson, stepped down this week to start building on Cartesi. Both shared their reflections publicly, and they're worth reading. Felipe Argento put it plainly: nobody is going to grasp what this stack makes possible from a diagram. They'll understand it through a product that's actually great. → https://x.com/felipeargento/status/2069783313204547736 Brandon Isaacson pointed to the same opportunity from a financial perspective: the math, the risk models, and the complex logic TradFi runs every day are all possible on Cartesi, which means all of it is now possible on Ethereum. → https://x.com/nodnarb/status/2069783696803070050 The people who know this stack best chose to build on it. See what our co-founder Erick de Moura had to say: → https://x.com/erickdemoura/status/2070161005032915355 ICYMI, we also put together a proper reintroduction this week in a quick infographic. Save it. Share it: → https://x.com/cartesiproject/status/2070130652620693820 And on the media side, Joao Garcia joined Web3CMOStories to talk about what DeFi's next infrastructure layer looks like. Linux onchain. Real computation. App-specific rollups. Give it a listen: → https://x.com/joeribillast/status/2070119110906663127 That's all for now. Have a great weekend and keep building! Repost: https://x.com/cartesiproject/status/2070495690011095406

Real-world forecasts don't exist in isolation. Inflation affects interest rates. Elections affect policy. A team winning its group reshapes the bracket. This is a combinatorial information market demo built with deterministic, reproducible probabilistic inference on Cartesi. ↑ A Combinatorial Information Market represents connected variables as a single probabilistic system. Instead of treating forecasts as isolated markets, it captures the relationships between them. That unlocks conditional forecasting too: "What if inflation stays above 4%?" Under the hood, CIM uses a junction tree to perform exact probabilistic inference efficiently. Related variables are grouped into cliques connected by shared variables. Belief propagation computes exact probabilities by passing information between these local clusters rather than operating on one massive joint table. Explore the docs and build with Cartesi: https://docs.cartesi.io/get-started Repost: https://x.com/cartesiproject/status/2069410399909564883

GM. Welcome to a new week where Linux runs the world. And now it runs onchain. Repost: https://x.com/cartesiproject/status/2069042988534436079

Our technical milestones are making it into L2BEAT monthly recaps, the go-to source for onchain transparency across the ecosystem. Worth reading through. ↓ https://l2beat.com/publications/monthly-update-2026-05 Repost: https://x.com/cartesiproject/status/2064362640026296577

GM. A reminder that every contribution matters, whether you’re building, researching, testing, creating content, engaging with the community, or simply asking thoughtful questions. Open-source software is built together. So is Cartesi. Repost: https://x.com/cartesiproject/status/2063966773993672844

Name one thing Cartesi can do that EVM can't. Drop your comments in the chat or in the replies to this X post. Go ↓ Repost: https://x.com/cartesiproject/status/2062504137410183587

Looking beyond the 'Crypto Twitter' bubble? Find us on the CoinMarketCap Community feed, too. Follow Cartesi, see updates, tag $CTSI in your posts, join the conversations, and hang with the community. →https://coinmarketcap.com/community/profile/cartesiproject/ Repost: https://x.com/cartesiproject/status/2062156407466831927

Simulating token price mechanics entirely onchain. 🐧 Contributor Shaheen Ahmed just vibe coded a bonding curve inside the Cartesi Machine with a Python backend. This is a real building block for DeFi pricing mechanics or token economics. The secret ingredient is the open cartesi skills file. Plug the Cartesi workflow into Cursor or Claude and you can build complex logic just like this. Check out the demo on X too and and share the wisdom: https://x.com/riseandshaheen/status/2059219463417766135

You’ve seen contributors vibe coding. You’ve heard about skills. Now get ready to dive into cartesi-skills: specialized capabilities for AI agents building on Cartesi. Because your agent doesn't need better prompts, it needs skills. ↓ Find ready-to-use skills to deploy a Cartesi app to a self-hosted node, scaffold a project, or wire up a frontend. What's in the repo? 10 skills + 1 workflow skill for guidance: → Scaffolding → Backend (JS/TS + Python) → Local development → Debugging → Frontend → Contracts → Rollups Node API (JSON-RPC) → Self-hosted deploy Heads up: it's an early release compatible with Cartesi Rollups v 2.0. Testing and feedback are very welcome. Start vibe-code building now: → Skills: skills.mugen.builders → Repo: github.com/Mugen-Builders/cartesi-skills → See the setup walkthrough above. Repost: https://x.com/cartesiproject/status/2056744453835268563

GM from the compute corner of blockchain where Linux meets Ethereum security. Time to build. Repost: https://x.com/cartesiproject/status/2056359924591198266

Security is foundational, not optional. 🐧 We are locked in with ChainPatrol for 24/7 monitoring to protect the Cartesi community. This ensures cleaner browsing, fewer threats, and safer links across our ecosystem. More trust online and onchain, for everyone. Repost: https://x.com/cartesiproject/status/2054253078807765035

GM from the infra that optimized for the developer. The missing layer between web2 and web3. Week's open. Let's ship. Repost: https://x.com/cartesiproject/status/2053823262422077851

Catch Joao Garcia on Satoshi Sean's show: Linux onchain, Python libraries for DeFi to reach TradFi standards, and execution environments in practice. A convo unpacking why builders need to stop optimizing around gas limits and start building for what DeFi actually needs. Full episode here: https://www.youtube.com/watch?v=fG77I1gXS2E Repost: https://x.com/cartesiproject/status/2052373986777186515

Our ecosystem articles are also live on Paragraph! Monthly news, releases, builder work, technical highlights, community moments, all in one feed. No scroll lottery. Subscribe and catch up on the April ecosystem updates if you haven't yet: https://paragraph.com/@cartesians Repost: https://x.com/cartesiproject/status/2052011057795981343

GM, builder! Run any code onchain, you must. Reinvent the wheel, you must not. May the 4th be with you. And verifiable compute guide you. Repost: https://x.com/cartesiproject/status/2051286495491977342

gm to everyone shipping in the last week of April. The quiet ones building through the noise. The ones pushing commits at 2am. The ones who know what Linux on a rollup actually unlocks. We see you. Keep going. Repost: https://x.com/cartesiproject/status/2048749915006812273

What happens when you combine AI assisted coding with a full Linux runtime on Ethereum? 🐧 Our DevAd Shaheen Ahmed asked Cursor AI to build a complete Cartesi application, this time integrating a Chainlink price feed. It all started with a simple prompt: “Build me a Cartesi app. Make no mistakes.” The results are seriously impressive. It shows how quickly you can build complex Web3 logic with AI, while leveraging the flexibility of a full Linux runtime. Watch the build and share the wisdom: https://x.com/riseandshaheen/status/2047247344828395616

Friday's here and so is your Cartesi Weekly 🐧 On the contracts side, Cartesi Machine Solidity Step v0.14.0 is now live. This release updates the machine-related onchain smart contracts to be compatible with Cartesi Machine Emulator v0.20.0, keeping the full stack aligned as infrastructure matures. → https://github.com/cartesi/machine-solidity-step/releases/tag/v0.14.0 Speaking of the emulator, we put together a deep dive into what shipped with Machine Emulator v0.20.0. Months of engineering work went into how proofs, performance, and security are handled. The thread breaks down every change and why it matters: → https://x.com/cartesiproject/status/2044038802151485454 Building DeFi apps that handle real data on the EVM is hard. Luckily, with Cartesi, builders can use the libraries they already know. The latest tutorial shows how to leverage Pandas to bring Python's data manipulation power onchain. Bookmark it: → https://x.com/cartesiproject/status/2044763094363386215 The execution layer conversation keeps getting louder. Cypher amplified our article breaking down how protocols are forced into compromises, what changes when you remove those limits, and why Cartesi's approach speaks for itself: → https://x.com/NxtCypher/status/2043728740870418599 World Art Day passed this week and we couldn't fail to mark it with some original digital art complementing the ultimate form of art: code. See here: → https://x.com/cartesiproject/status/2044450277760041254 Cashtags took the X feed by storm and $CTSI was right in the mix. We always love to see you tagging us. For more of that energy, take a stroll on CoinMarketCap community and show us some love there too: → https://coinmarketcap.com/community/profile/cartesiproject/ That is all for this week. It's build time everyday though, the penguin said so. Watch him close it out in style: → https://x.com/cartesiproject/status/2043676245544845464 Have a great weekend. Repost: https://x.com/cartesiproject/status/2045125694997647424

Another week of heads down building brings us to your Cartesi Weekly. Let's look at what happened across the ecosystem this week🐧 On the development front, contributors have been busy. The core team pushed Rollups Node v2.0.0 alpha.11. This release is entirely focused on throughput, operational tooling, and stability. By introducing round robin scheduling, the node now ensures fair processing across all applications, preventing any single heavy dApp from starving others. It also ships with a brand new CLI diagnostic tool for direct onchain inspection. → https://github.com/cartesi/rollups-node/releases/tag/v2.0.0-alpha.11 Alongside the node update, Rollups Contracts 3.0.0 alpha.3 went live. The major addition here is preliminary support for emergency withdrawals, plus important refinements to machine Merkle roots for claim events. → https://github.com/cartesi/rollups-contracts/releases/tag/v3.0.0-alpha.3 To tie the new node infrastructure together, a fresh alpha for the Cartesi CLI was also released. It integrates the updated rollups explorer and is ready for core developers to test. Grab the alpha, run the flow, and drop your feedback in our Discord so we can refine the production release. → https://discord.gg/cartesi We wrapped up Q1 by asking you which Cartesi capability matters most to your builds. The results are in, and the Full Linux environment took the clear lead with over half the votes. → https://x.com/cartesiproject/status/2038965085939605533 We also kicked off April and Q2 with a clear reminder of our fundamentals. Linux execution. Ethereum settlement. No jokes, just shipping. Catch up with the explainer thread to brush up on the architecture here: → https://x.com/cartesiproject/status/2039327737253634458 Zooming out to the broader landscape, L2BEAT published their March ecosystem update. They highlighted our recent infrastructure upgrades, improved developer tooling, and the ongoing educational push surrounding Linux based execution. → https://x.com/l2beat/status/2039719948667293879 As a reminder, we are consistently expanding our content reach. You can always catch our latest updates and articles on CoinMarketCap, welcoming developers to the Linux era of Web3. Join the conversation and follow our page there: → https://coinmarketcap.com/community/profile/cartesiproject/ That is all for this week. Have a great Friday & weekend, we will be back to building. Repost: https://x.com/cartesiproject/status/2040053011549143463

If you're new to Cartesi, ask a question. If you've been here for a while, answer a question. Let's see if we can grow the Cartesians crew and help each other out in the chat today. ↓ Repost: https://x.com/cartesiproject/status/2039689876988424636

DeFi is everywhere, from lending and perpetuals to prediction markets, and they all depend on one thing: reliable price oracles. Adding that to your Cartesi app is simple. Check out this video to see what the architecture looks like when you integrate a Chainlink oracle. See it in practice here; deploy the Oracle Reader contract, connect it to your Cartesi app, and with a single click the full flow kicks in: Chainlink fetches the ETH price, attaches a timestamp, and forwards everything to your Cartesi app. One interaction. Endless possibilities. Resources: https://github.com/Mugen-Builders/cartesi-oracles-integration Props to Idogwu Chinonso and the DevAdvocacy crew for putting this together. Want to explore the tech further or ask them questions? Head to Discord: https://discord.gg/cartesi Repost: https://x.com/cartesiproject/status/2027020985531301888

No Real Math, No Real Finance. Our DevAd Lead Joao Garcia hits the nail on the head: imagine a bank that rounds everything to the nearest dollar. Unfortunately, that is often the reality of DeFi today due to computational limitations. But there is a fix. A performant execution layer like Cartesi brings the processing power needed for complex math, unlocking the true potential of onchain finance. Without floating-point math, models must be simplified or approximated, which affects pricing, volatility, and risk calculations. With Cartesi, models can more closely reflect real financial behavior. Come down the rabbit hole with Joao: https://x.com/joaopdgarcia/status/2023761869606187248

GM from the L2 that did “something that actually brought something new to the table”: full Linux OS programmability and expressivity for developers, leveraging 30+ years of mainstream software progress, all while inheriting Ethereum’s security and decentralization. Repost: https://x.com/cartesiproject/status/2020860354721636795

Once again, if it’s Friday, it’s Cartesi Weekly with your latest ecosystem updates 🐧 New Cartesi CLI alpha for Node v2 is out, bringing improvements that make development smoother, safer, and more reliable. It adds better encoding for easier smart contract interactions, fixes template creation to reduce friction, updates Docker requirements for consistent builds, and provides ready-to-use application templates to help devs quickly start experiments. This release is for core devs and testers only, but if you want to dive in, find it here: → https://github.com/cartesi/application-templates/tree/prerelease/sdk-12 10 reasons why DeFi can benefit from a better execution environment. Learn what Cartesi brings to the table and why it matters in the quest to bring more complex financial systems onchain, on par with TradFi. Article written by our DevAdvocacy Lead, Joao Garcia: → https://x.com/joaopdgarcia/status/2018688089258865078 Explore all contributor writings in our blog’s dedicated space: → https://cartesi.io/contributor-hub/ Speaking of articles, Cartesi also got a nice feature in Datawallet, covering everything about the architecture, with build examples (including Locale Network), token utility, and more. Check it out here: → https://www.datawallet.com/crypto/cartesi-explained As with every beginning of the month, the L2BEAT recap is out, collecting the latest news from partners over the past month. See our section here: → https://x.com/l2beat/status/2018361886069121117 On the community side, don’t forget you can also find us on CoinMarketCap, where Cartesi has its own Community Feed and dedicated content: → https://x.com/cartesiproject/status/2019048631815508094 Markets will test us. But building is our answer. We'll keep shipping through it all. Repost: https://x.com/cartesiproject/status/2019773192722841728

Cartesi CLI v2.0.0-alpha.26 is live with DevEX improvements: - Faster startup times: less waiting - Reduced external dependencies: simpler setup - PRT by default: permissionless fraud proof system enabled - Rollups Node v2 preview: upcoming workflow enhancements - Streamlined workflow: a smoother path from idea to deployment - Alternative Bun-based distribution: no need for a global Node.js install This alpha is intended for core developers and early testers. If that's you and you want to help with our tooling and CLI refinements, the GitHub release is available below ↓ https://github.com/cartesi/cli/releases/tag/%40cartesi/cli%402.0.0-alpha.26 Repost: https://x.com/cartesiproject/status/2016511615328469413

OS Pengu reveals the Builder 👷 challenge today: add assets to your app built with Linux OS on Cartesi. Devs already know the basics from the previous quests, so now it’s time for tokens. One hoodie awaits a winner who submits. Details below ↓ Head over to quests3.mugen.builders for the final and most important challenge. Add assets to your app using our portals mechanism and unlock many new features and possibilities. Make sure to submit a transaction to be eligible. Good luck. Repost: https://x.com/cartesiproject/status/2003435538649612729

Another day, another challenge. Icepaper Maxi Penguin has a hoodie to give away to a dev who cooks one of the most classic apps with Cartesi: a counter app. 👨‍🍳 Submit your entry and the winner’s wallet will be announced in the comments. Details below ↓ Head to https://quests2.mugen.builders/ to complete the quest and get hands-on with building on Cartesi. This challenge helps builders understand how state works, how values are updated in memory, and how they can be read at any time. Good luck! Repost: https://x.com/cartesiproject/status/2001623613926158412

GM November and GM to everyone gearing up for ETH Latam this week. Excited to reconnect with the Brazilian community and happy to share that we'll have not one, but two Cartesi speakers on stage. Props to Carlo Fragni & Henrique Marlon for representing. Quick roll call: who’s in? Repost: https://fxtwitter.com/cartesiproject/status/1985348079973752833

Hear Carlo Fragni on ETHGAS’s X Space explain how Cartesi appchains scale Ethereum while inheriting its full security guarantees and decentralization properties, and why UX remains the ultimate challenge for mainstream onboarding. ↓ Shoutout to Kevin Lepsoe and JackGK for hosting, and RobAnon from infiniFi for joining the panel. Great insights on gas fees, block space, UX, security, and scaling Ethereum to drive retail adoption. ICYMI, catch the full episode here: https://x.com/i/spaces/1LyxBXZWXrjGN Repost: https://x.com/cartesiproject/status/1978808248112419108

Turn notis on! Our beloved contributor Carlo Fragni returns to ETHGasOfficial’s X Space today at 1 PM UTC to continue the chat on Ethereum’s next chapter. Catch insights on infra and UX from him and the rest of the panelists. → https://x.com/i/spaces/1LyxBXZWXrjGN Repost: https://x.com/cartesiproject/status/1975516473742565831

GM Cartesians, and GM to this new series kicking off soon featuring our Ecosystem Growth Lead, Bruno Maia. What's in store for you this week? Repost: https://fxtwitter.com/cartesiproject/status/1970110873529401674

gCartesi Repost: https://x.com/cartesiproject/status/1957427419998261311

Since our fraud-proof system PRT takes its name from the Permissionless Refereed Tournaments paper, let's explore how these tournaments work, the mechanism that elevated PRT Honeypot to L2Beat’s Stage 2. Watch above how PRT settles off-chain disputes and pinpoints the honest proof. Repost: https://x.com/cartesiproject/status/1956030562692685938

GM from deep inside a Linux VM. Powering verifiable appchains secured by Cartesi’s PRT fraud-proof system. Build smarter. Scale securely. Repost: https://x.com/cartesiproject/status/1954890662744367211

With a decade of Ethereum, over a month of our Stage 2 appchain PRT Honeypot, and July behind us, it’s time for a new Ecosystem Updates blog. Dive in for the latest on tech progress, developer tools, ecosystem milestones, community highlights, and more ↓ https://cartesi.io/blog/ecosystem_updates_7/ Repost: https://fxtwitter.com/cartesiproject/status/1953803428628770940

New pod alert: Check out Sam Kamani's latest episode with our contributor Bruno Maia to hear more about Cartesi's Verifiable Rollup Infrastructure! Check out his thread here and listen in: https://open.spotify.com/episode/1LxcVIFMEKhtTcK6JPIpgq

GM Brazil! If you’re attending Blockchain.Rio, make sure to connect with our Cartesian on the ground, Carlo Fragni. He’s one of Cartesi’s earliest contributors and always up for a chat about what we’re building and why it matters for the future of expressive dApps. Repost: https://x.com/cartesiproject/status/1953410823579468188

Catch co-founder Felipe Argento on Blockster’s podcast to hear all about Cartesi’s expressive execution environment and how bridging web2 to web3 and leveraging existing legacy software allow developers to build more efficiently. Full episode here: https://www.youtube.com/watch?v=2q2yyTtABfk Repost: https://x.com/cartesiproject/status/1950987401930875306

Starting the week with gm and a nod to appchains carving their own lane after CryptoKitties’ lessons. Did you catch our latest podcast episode? Thanks to L2BEAT founder Bartek Kiepuszwski and researcher Luca Donno for joining IBTIA to share their views on Ethereum’s future, the long game of decentralization and security, how we’ve come full circle back to appchains, and much more. Watch the full episode here: https://www.youtube.com/watch?v=6N0361jBHBY Repost: https://x.com/cartesiproject/status/1949817325513064477

Another way to run your very own PRT Honeypot node, this time with a cloud-hosted setup. With Fly.io, spinning up a validator is easier than ever: 5 simple steps and you're helping secure the app yourself. All shown in this video tutorial to make it easy. ↑ Repost: https://x.com/cartesiproject/status/1948405406646292586

GM in Python? GM in JavaScript? GM in Rust? GM in Go? Whatever your language, Cartesi speaks it. Build in the language you love! Repost: https://x.com/cartesiproject/status/1942207072898306235

Opportunity for devs and researchers in Brazil: Rede Nacional de Ensino e Pesquisa (RNP) & Escola Superior de Redes (ESR) launch “Intro to Blockchain, Web3, and Rollups” with CPQD via ILIADA project. Focused on Cartesi, cited as one of the most promising solutions for dApp scalability, the course will boost Brazil’s blockchain ecosystem. Apply here: https://www.rnp.br/pesquisa-e-desenvolvimento/rnp-e-esr-lancam-curso-sobre-blockchain-web-3-e-rollups-no-ambito-do-projeto-iliada/ Repost: https://x.com/cartesiproject/status/1941490000241230316

Catch João Garcia and Jagdeep Sidhu live in 30 minutes here on TG, X or YouTube as they dive into Syscoin architecture and what it takes to build in Web3 today. → https://www.youtube.com/watch?v=wWDzGBfcN50 Retweet: https://x.com/cartesiproject/status/1932762246440210916

What’s humming? Running the Cartesi Machine natively just got simpler—and now it's 2x faster, thanks to the latest optimizations! On the Node side, the stable V2 release is here. With support from Espresso, it's ready to power Drawing Canvas’ testnet. Retweet: https://x.com/cartesiproject/status/1887456890264953340

There’s no Cartesi Weekly this time—just a little reminder that Cartesi loves you 🫶 And since today’s the final day of the Holiday Hunt, we’re wrapping it up with a Friday Frenzy! Find 10 codes scattered across all of our socials to claim your cap and join the Simple Minded gang 🧢

An astronaut with a floating orb A ‘start building’ button, right in the middle On that exact same page, you will find The code to the first Holiday Hunt Riddle 🎁

gm and Happy Holidays! It’s been an incredible year for Cartesi, and we couldn’t have done it without your support. To celebrate, we’re hosting a special Holiday Hunt! Each day, discover a code hidden on our socials to claim your hoodie & cap. Stay tuned for the first clue 👀 Retweet: https://x.com/cartesiproject/status/1871224246699221081

Based in Rio and looking for plans tonight? Join us at the Mantle LATAM Tour in Rio de Janeiro and catch Bruno Maia on a panel discussing the importance of investing in and growing the crypto ecosystem across LATAM. RSVP now ➡️ https://lu.ma/pspb5z1c Retweet: https://x.com/cartesiproject/status/1868717733665554561

A speedrun pitch of the abilities of Cartesi as a Linux coprocessor? Say less. Couldn’t make it to AVS Day in Bangkok? No worries—relive Carsten Munk’s insightful talk, hosted by Eigenlayer, Consensys, and AltLayer. Dive in and see how Cartesi is reshaping the future of Web3! ⬆️