Colin 🐝🐧

It’s Friday, so here comes your Cartesi Weekly 🐧 Your AI agent already knows Linux. That’s familiar ground for building with Cartesi too: a full Linux environment, with the languages, libraries, and tools developers already use. Worth the reminder: → teapaw.org/cartesiproject/status/… On the governance side, the Cartesi Foundation’s proposal to permanently renounce the MinterRole on the $CTSI token contract is open for discussion before the vote. If approved, no new CTSI could be minted, fixing supply at 1B tokens. Any future CTSI-funded initiatives would use existing tokens. Community feedback is requested, so read the proposal and weigh in: → governance.cartesi.io/t/new-… Thursday took us back to the Cartesi Machine through a thread of threads by @felipeargento, longtime contributor and now @knoss_xyz cofounder. A look under the hood at the research and engineering behind running a full Linux computer verifiably onchain. ICYMI, here’s your way in: → teapaw.org/cartesiproject/status/… Beyond the timeline, @riseandshaheen was in Mumbai for Devcon, representing @knoss_xyz, the options and derivatives exchange being built on Cartesi Rollups. He put out a call to market makers, DeFi builders, and traders to connect, with early Knoss invites on offer: → teapaw.org/riseandshaheen/status/… And Monday’s gm set the tone for November: developers shouldn’t have to leave their favorite tools behind to build onchain. Keep your Linux stack. Bring it to Ethereum. → teapaw.org/cartesiproject/status/… That’s the week! Building something with Cartesi, or looking for a place to start? Come find us on Discord: discord.gg/cartesi. Have a great weekend!

ICYMI: The Cartesi Foundation proposes permanently renouncing the MinterRole on the $CTSI token contract. If approved, no new CTSI can be minted, fixing supply at 1B. Any future CTSI-funded initiatives would use existing tokens. Weigh in before the vote: governance.cartesi.io/t/new-…

October brought a lot to catch up on: a $CTSI MinterRole consultation as staking rewards end ~July 2027, new Node, CLI, Sequencer, and Machine releases, the Q3 Engineering Report, the Foundation backing @knoss_xyz, and more. All treats, no tricks ↓ blog.cartesi.io/ecosystem-up…

Have you explored the new Cartesi website? Well, you should.

Two Cartesi Foundation updates for stakers and $CTSI holders: → a notice on the Mine Reserve’s remaining lifecycle (staking rewards) → a proposal to permanently renounce the MinterRole on the CTSI token The first is a notice, the second a 21-day consultation before a vote 🧵↓

It’s Friday, so here comes your Cartesi Weekly 🐧 Work has progressed on our PRT fraud-proof system, and Dave v3.0.0-alpha.6 is out as a new deployment generation. An honest player’s clock now refills (up to a cap) each time they win a sub-dispute. That means attackers can’t use a flood of fake identities to run out the clock on a correct claim. The release also fixes a finding from the latest PRT verification review and works with Cartesi Machine v0.22. As always, props to @GCdePaula_ for shipping it: → github.com/cartesi/dave/rele… Over on the staking side, Explorer v3.13.0 went live. It moves to a new wallet library and adds transaction receipts for anyone using Explorer as a Safe App, which helps if your stake sits in a multisig. Kudos to @brunolmenezes: → github.com/cartesi/explorer/… Short on time for the full Q3 Engineering Report? The tl;dr thread walks through 130 merged PRs, 673 commits, and 58 releases across 13 repos, sorted by the three technical pillars. Two highlights: deposit refunds close the last gap in emergency withdrawals, and Cartesi Machine v0.21.0 makes every input end in a provable outcome, even when the app crashes. Summary here: → teapaw.org/cartesiproject/status/… This week was Open Access Week. Research should be free to read, share, and build on, and so should code. Cartesi is open source and brings Linux onchain with Ethereum settlement, so anyone can check the results for themselves. → teapaw.org/cartesiproject/status/… The timeline had opinions this week too. If your stack won’t let you build with Linux onchain, it ain’t the one: → teapaw.org/cartesiproject/status/… And a reminder to stop designing around an L1 EVM’s single block of compute, shared by every app. Switch to Cartesi for orders of magnitude more compute, a full Linux stack, and a dedicated VM for each app: → teapaw.org/cartesiproject/status/… That’s the week. Building something with Linux onchain, or just want to say hi? Come find us on Discord: discord.gg/cartesi. Enjoy the weekend!

Friday today, and here’s your Cartesi Weekly once again 🐧 Cartesi CLI 2.0.0-alpha.39 is out for core developers and testers, supporting the latest Rollups Node release. Emergency withdrawals now configure straight from the machine, so there’s no separate config to keep in sync and fewer ways to get the safety net wrong. Breaking changes included, so check the release notes before upgrading. Kudos to our contributor @brunolmenezes for shipping it: → github.com/cartesi/cli/relea… As the SDK matures, there’s a new way to track progress: Quarterly Engineering Reports, covering every tech workstream, achievement, and milestone. Q3 2026 by the numbers: 130 merged PRs, 673 commits, 58 releases. Months of engineering work, all in one place on our blog, curated by @riseandshaheen and the rest of the DevAdvocacy team: → teapaw.org/cartesiproject/status/… First time on your feed this week: the Cartesi sequencer. It soft-confirms user ops instantly and posts them to Ethereum in batches, so interactive apps feel fast while Ethereum stays the source of truth. It can’t steal funds or forge state, fraud proofs enforce the result, and deposits skip it entirely. Still alpha, with v0.1.0-alpha.10 shipping the sequencer, machine images, and watchdog together. Shoutout to @GCdePaula_ and the other contributors behind it. Check more here: → teapaw.org/cartesiproject/status/… Zooming out, the Technical Plan lays out the three pillars guiding the roadmap: safe infrastructure for real money, economical computation at scale, and an easy stack for shipping onchain in a day. Plus, if you didn’t yet check our new website, now it’s the moment to do it. → cartesi.io/technical-evoluti… Monday’s gm put it plainly: if your code or library already runs on Linux, it runs onchain too. Same tools, Cartesi infra, Ethereum security. → teapaw.org/cartesiproject/status/… That’s the pitch, and that’s the week! As always, keep in touch on Discord: discord.gg/cartesi, and let’s all slide into the weekend. Have a good one!

As the SDK matures, there’s a new way to track Cartesi’s progress. Introducing the Quarterly Engineering Reports, covering every tech workstream, achievement, and milestone. 130 merged PRs. 673 commits. 58 releases. Get the full Q3 2026 breakdown ↓ blog.cartesi.io/engineering-…

Friday is here, and three releases plus a new DeFi build make up your Cartesi Weekly once again 🐧 Rollups Node v2.0.0-alpha.13 is out, and the headline is deposit refunds. If an app gets foreclosed before consensus finalizes a deposit, the new refund command sends the funds back to the original depositor, so users don’t lose access to their money when an app stops. It also brings staged settlement from PRT, our fraud proof system, into the node, moves to Cartesi Machine Emulator v0.21.0, and is compatible with the latest Rollups Contracts 3.0.0-alpha.10 and PRT 3.0.0-alpha.5. Testing only for now, and it needs a fresh database plus app redeployment, so read the upgrade notes first: → github.com/cartesi/rollups-n… Cartesi CLI 2.0.0-alpha.38 is out too, for core developers and testers. New commands let you foreclose an app and recover its funds on devnet, so you can test the whole emergency withdrawal flow end to end. Explorer and rollups-ts were updated alongside it, keeping the toolchain in sync. Come to Discord to get the install command and dive into the changelog on GitHub: → github.com/cartesi/cli/relea… And that’s not all. Sequencer v0.1.0-alpha.10 also shipped this week. We’ll unpack it properly soon, but here’s a sneak peek at the work: → github.com/cartesi/sequencer… When @felipeargento and @nodnarb stepped down from the Cartesi Foundation board to build something on the stack that finally makes the tech click, this is what they had in mind. @knoss_xyz is an exchange for options and perps, and our thread breaks down why options barely exist onchain: the math behind them is hard to run trustlessly, so builders simplify it and overcollateralize. Knoss will run that math on Cartesi, reproducibly and provably on Ethereum. Read more in the thread: → teapaw.org/cartesiproject/status/… Everyone on X is writing a letter to everyone this week, so we joined in. The trend is fun, but the strategic shift behind it for Cartesi is real: → teapaw.org/cartesiproject/status/… ICYMI, the article detailing the next stage for Cartesi is here: → teapaw.org/cartesiproject/status/… Monday’s gm went out to builders, @knoss_xyz, and @Linux, all three at home on Cartesi Rollups: → teapaw.org/cartesiproject/status/… And if you haven’t explored our new website yet, or didn’t even know it was new, click here: → cartesi.io/ That’s the week! Now that @token2049 is over, we can all get back to locking in and keep building. As always, the meeting point for any questions is Discord: discord.gg/cartesi Have a great weekend!

Deep dive moment: @felipeargento, co-founder of @knoss_xyz, breaks down why options are still so hard to build in DeFi. For years, he's given friends the same answer about crypto: "ETH to a million or zero." Problem is, there's no trustless way to place that bet onchain. 🧵↓

September was a big one. Dive into the latest ecosystem updates, from our website's refreshed look and feel to @knoss_xyz, a derivatives exchange built on Cartesi. Plus tech progress, media highlights, and community moments. There's a lot to catch up on ↓ blog.cartesi.io/ecosystem-up…

New month, new website? Starting today, cartesi.io/ has a fresh look, rebuilt around what matters right now: a cleaner layout, simpler navigation, and a direct answer to what Cartesi is and where it's headed in tech and strategy. What you'll find ↓

Another week of heads down building is in the books and here's your Cartesi Weekly 🐧 Dave v3.0.0-alpha.5 just rolled out. This node-only release fixes stuck bond refunds across epochs: the node now finishes each epoch, waits for final settlement, and recovers its bonds before moving on. If restarted, it picks up right where it left off. Contracts and the Cartesi Machine remain unchanged. Upgrading from alpha.4 requires a fresh state directory, with one per signer. Kudos to our contributor @GCdePaula_ for the work on it. See GitHub for the full details: → github.com/cartesi/dave/rele… Don’t remember what Dave is? Quick refresher: it’s our fraud-proof system, with the repo tracking advancements to the Permissionless Refereed Tournament (PRT). Check out this short recap: → teapaw.org/cartesiproject/status/… Why does DeFi need Cartesi? Most DeFi runs a simplified version of finance, because builders design around what the chain can run instead of what they actually need. Revisiting an article from contributor @joaopdgarcia, our thread highlights what changes when each app gets its own Linux rollup settled on Ethereum: collateral that moves with volatility, prediction markets with a real matching engine, continuous DCA, and credit scores anyone can rerun. Give it a read: → teapaw.org/cartesiproject/status/… Spotted in the wild on Instagram: community-made Cartesi NFC keychains that take you to our website with a single scan. We love seeing this. Give the creator a follow, and make sure you're following us there too: → instagram.com/cartesiproject… Our gm this week kept it simple: every day is a good day to build with Cartesi and that’s what we did throughout the week: → teapaw.org/cartesiproject/status/… That's all for now. Come to Discord: discord.gg/cartesi or Telegram t.me/cartesiproject if you want to keep the conversation going. Have a great weekend.

Last month packed in new alphas for Rollups Contracts, the Sequencer, and Machine browser bindings, an update to the Machine Emulator to v0.21.0, and 35 years of the software stack powering it all: Linux. Read the full updates for all the highlights ↓ cartesi.io/blog/ecosystem-up…