Cartesi

Staying informed on protocol developments and technical releases!

Quick reminder: the Cartesi blog is the best place to keep up with our monthly ecosystem updates, covering the latest tech progress, releases, and developments across the ecosystem.

Bookmark our blog at https://cartesi.io/blog/ or subscribe to the newsletter to get updates straight to your inbox: https://mailchi.mp/cartesi/email-newsletter https://x.com/cartesiproject/status/2071942390550802894

Repost: https://x.com/cartesiproject/status/2097678146627912145

The start of the month brought a new release: Dave 3.0.0-alpha.4. Let's unpack what's under the hood.

But first, in case you don't know what Dave is and by now you're afraid to ask, here's the tl;dr. ↓🧵

1/ The fraud proof system, our Permissionless Refereed Tournament (PRT), is the mechanism that lets anyone challenge a dishonest computation onchain without trusting a single validator.

Optimistic rollups assume computations are correct by default, so there's a dispute period, and PRT is what resolves it.

2/ What's new in 3.0.0-alpha.4: PRT settlement is now two-phase, staged then accepted, giving the network a window to catch errors before they're final.

That window disappears if every sentry agrees with the staged result, skipping straight to faster finality.

3/ The prototype node has a name now: Sling, with persistent storage and event tracking.

PRT's ad-hoc tournament views were replaced by typed projections that expose the actual phase instead of reverting.

Also shipped: fairer payouts for tournament winners, deployment files moving to plain text, upgrades to the Cartesi Machine and Rollups Contracts, a newer Foundry, and stronger test coverage.

4/ Kudos to our contributors for the work on this. Full changelog here: https://github.com/cartesi/dave/releases/tag/v3.0.0-alpha.4

Come catch up on Discord if you have any questions or feedback: https://discord.gg/cartesi

Repost: https://x.com/cartesiproject/status/2097309810396164306

GM to a new week. To Linux execution. To Ethereum security. To Cartesi infrastructure.

GM Cartesians.

Repost: https://x.com/cartesiproject/status/2096947613652451371

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 ↓
https://cartesi.io/blog/ecosystem-updates-august-2026/

Repost: https://x.com/cartesiproject/status/2095912523837133180

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 ↓
https://cartesi.io/blog/ecosystem-updates-august-2026/

Repost: https://x.com/cartesiproject/status/2095912523837133180

Excited to see the Cartesi community growing on CoinMarketCap! We just officially crossed 90,200 followers, and we want to thank every one of you who's part of it.

If you haven't joined us on CMC yet, it is a great place to step outside the usual CT bubble, catch official updates, tag $CTSI, and connect with fellow builders and supporters.

Come say gm in there: https://coinmarketcap.com/community/profile/cartesiproject/

Repost: https://x.com/cartesiproject/status/2095496533634646341

Contributors shipped a new alpha for the Cartesi Machine bindings, libraries that make it easier to run a machine in the browser 🐧

Try it on its dedicated playground: configure, create, and run a machine right there, terminal included, without installing: https://cartesi-playground.vercel.app/

As Danilo highlighted, the emulator is versatile and runs on WASM with browser supported TypeScript bindings. Also in this alpha release: the machine can connect to a network, be run and controlled from a remote server, and show live terminal output, all straight from your browser tab.
Plus, full docs on browser support are live at https://cartesi.github.io/rollups-ts/machine/

Come drop any questions or feedback on Discord: https://discord.gg/cartesi

Repost: https://x.com/cartesiproject/status/2095135408409784799

Happy September to those who believe in Linux supremacy!

Spread the word, Cartesian: https://x.com/cartesiproject/status/2094787246511567067

We are once again asking you to keep the world computer vision alive with us and to build on Linux, onchain, on Ethereum.

August is wrapping up, but the shipping isn't. GM!

Repost: https://x.com/cartesiproject/status/2058896948762128472

Another week of heads-down building brings us to your Cartesi Weekly, and this one is a little more celebratory 🐧

Linux turned 35 this week, and we couldn't let it pass quietly. We wished a happy birthday to the OS that the Cartesi Machine runs on, and the feed delivered as well. Linus Torvalds launched Linux in 1991 and described it as ‘just a hobby’, but luckily the world disagreed. So many corners of the ecosystem showed up to celebrate, proud to be part of the Linux family:
→ https://x.com/cartesiproject/status/2092292063718973745

On Throwback Thursday: Linux has 35-plus years of battle-tested software behind it, yet DeFi keeps rebuilding what already exists. Our case for why it's time to stop reinventing the wheel and build on Linux instead is worth reading in full on the quoted thread:
→ https://x.com/cartesiproject/status/2092952840671240369

Big credit to Alchemy this week. Cartesian João Garcia put out a shoutout for the report our team submitted on intermittent eth_estimateGas failures on OP Sepolia, repro harness, A/B/C testing, cross-provider comparisons included. Alchemy traced the issue, fixed it, and confirmed the fix was live.
→ https://x.com/joaopdgarcia/status/2092581129765245399

Uttam from Alchemy called their support best-in-class in the industry, and the full thread is a good read on what great developer support actually looks like. And we love to celebrate good practices:
→ https://x.com/uttam_singhk/status/2092653343990857977

That's the week, for which we set the tone from the beginning: Cartesi's infra is built for devs from the ground up, more tools, more libraries, more programmability, more compute, so builders can put it all to work. Short one, worth a look if you scrolled past it:
→ https://x.com/cartesiproject/status/2091874346537251118

Go wish Linux a happy 35th if you haven't, read the full case for why DeFi needs it, and bring your questions to Discord: discord.gg/cartesi.

See you next week directly with the ecosystem updates blog. Have a great weekend.

Repost: https://x.com/cartesiproject/status/2093323347832807597

Throwback Thursday to 'Why DeFi Needs Linux.' Brought onchain by Cartesi. Secured by Ethereum.

Linux now has 35+ years of software development behind it. Yet DeFi keeps rebuilding what already exists.

It’s time to stop reinventing the wheel and start using Linux. Who's with us?

Repost: https://x.com/cartesiproject/status/2067246406763704757

GM from Cartesi, the infra built for devs, from the ground up, with more tools and libraries, more programmability and expressivity, more compute.

Now let's build and put it all to work.

Repost: https://x.com/cartesiproject/status/2091874346537251118

Cartesi Weekly is here, and this week went by fast but was no less eventful 🐧

We got to unpack Cartesi Machine Emulator v0.21.0. The verification game docs got a full rewrite, the CLI can now run entire fraud proof procedures on its own, and the state layer is faster and more durable under the hood. Kudos to Eduardo Bart for shipping it, and if you want to explore in depth, check out the thread we shared:
→ https://x.com/cartesiproject/status/2089698617829597516

And that's not all: Cartesi Rollups Contracts 3.0.0-alpha.9 is out as well. This release includes a fix for the Cartesi Rollups PRT Contracts, improved contract imports, dependency updates, and more reproducible release artifacts. Props to Guilherme Dantas for the work on this! Find the GitHub release here:
→ https://github.com/cartesi/rollups-contracts/releases/tag/v3.0.0-alpha.9

House of Chimera wrote up a deep dive for Cartesi this week, with a Cartesi Machine capabilities showcase, plus DeFi explorations and unique prototypes, a clear walkthrough of how PRT narrows a dispute down to a single RISC-V instruction, honeypot lifecycle and more. Good one to send to anyone to get a glimpse of our tech specs:
→ https://x.com/HouseofChimera/status/2090096426315575745

Also making the rounds: Bhavya on why Linux is beautiful, and if we may add, building with it onchain is even more beautiful. Shoutout for the video:
→ https://x.com/Bhavyaztwt/status/2089733481966559455

Our TikTok is also getting more populated. Check out this throwback, a snippet from Diego Nehab, the creator of Cartesi Machine. And don't be shy about following to help grow the channel:
→ https://www.tiktok.com/@cartesiproject/video/7675021194436955406

We keep building, while our motto from earlier in the week still stands: DeFi is the floor, not the ceiling.
→ https://x.com/cartesiproject/status/2087161705415811160

That's the week. Dig into what's new and bring your questions to Discord: discord.gg/cartesi. Have a great weekend!

Repost: https://x.com/cartesiproject/status/2090786513579913225

Linux is beautiful.
From sleek custom environments to massive computational power, Cartesi brings this full Linux runtime directly onchain for Web3 developers.

Props to Bhavya for the video.

Repost: https://x.com/cartesiproject/status/2090060465745674403

gm.
DeFi is the floor, not the ceiling.
We keep building.

Repost: https://x.com/cartesiproject/status/2089335971733246404

Somewhere on Reddit, someone is arguing about rollup architecture at 2am.
They don’t have to do it alone.
Find Cartesi on Reddit at r/cartesi for tech deep dives, release breakdowns, Q&As, and everything happening across the ecosystem.
And if you spot a conversation we should be part of, tag u/cartesi.

Last week brought us Cartesi Rollups Contracts 3.0.0-alpha.7. Safer deposits, stricter claims, and a lighter toolchain.
Let’s dive into what’s new under the hood in this latest release and why it matters. 🧵↓

1/ Deposit refunds are here. If an app is foreclosed, eligible deposits that haven’t been finalized can now be returned to the sender. This now covers ETH, ERC-20, ERC-721 and ERC-1155 deposits. One less way to lose money by accident.

2/ Deposit finalization is now tracked more explicitly, while fee-on-transfer ERC-20s are rejected. Together, these changes improve accounting around deposits and refunds, helping prevent mismatches that could leave apps underfunded or insolvent.

3/ Claim submissions now run through extra machine checks. That tightens security around the exact step where correctness matters most, catching invalid claims earlier instead of later.

4/ The toolchain just got lighter. We sunset Cannon in alpha.5, and now we've sunset the cartesi/rollups npm package too. rollups-contracts depends on Foundry and POSIX utilities only. Fewer dependencies for integrators to manage, less to break.

5/ Compiled artifacts and deployment addresses are still published on GitHub releases, so you can still grab everything easily. Source still ships through Soldeer: forge soldeer install 'cartesi-rollups-contracts~3.0.0-alpha.7'

6/ Also in this release: type-checked deployment scripts (catch deploy bugs before they hit chain), a smaller curated set of published artifacts (less clutter to sift through), foreclosure now emitted as a single event (easier to track onchain), and a bump to Foundry 1.5.1.

7/ Full changelog: https://github.com/cartesi/rollups-contracts/releases/tag/v3.0.0-alpha.7

So devs, dive into the release on the Rollups channel on Discord, test the changes, and drop any feedback: https://discord.gg/cartesi

Repost: https://x.com/cartesiproject/status/2087161705415811160

Ethereum keeps it secure. Fraud proofs keep it verifiable. Cartesi keeps it possible.

Monday, let's build the part that used to be impossible. GM!

Repost: https://x.com/cartesiproject/status/2086799493459230844

It's a wrap on July, and Cartesi kept building in the open.

The fraud proof system picked up a safety upgrade with PRT claim staging, dev tooling got reorganized, media appearances continued, and our penguin ventured from Kuala Lumpur to ETH birthday.

→ https://cartesi.io/blog/ecosystem-updates-july-2026

Repost: https://x.com/cartesiproject/status/2085711559528157397

What's a DeFi idea you scrapped since it needed real compute, not just more gas?

Complex risk models, ML-driven strategies, oracle-heavy logic: the EVM makes them expensive or nearly impossible. A Linux runtime doesn't.

Tell us what you scrapped. We might already be running it.

Repost: https://x.com/cartesiproject/status/2084988310288826861