Cartesi

November flew by, but Cartesi left its mark with PRT Honeypot v2 with bonds implementation, plus standout appearances at ETH Latam and Devconnect ARG.

Let’s catch up on last month’s tech progress, ecosystem achievements, media highlights, events, and more:
→ https://cartesi.io/blog/ecosystem_updates_11/

Repost: https://x.com/cartesiproject/status/1996942696817332280

Catch DL Research’s interview with Co-Founder Felipe Argento at Devconnect ARG on Cartesi’s journey from an AI marketplace to a RISC-V-based execution layer, Stage 2 secured by the PRT fraud-proof system, and Ethereum-first, trustless approach to building systems no one controls. ↓

Repost: https://x.com/dl_research/status/1995572745598550081

New spot, same energy. Cartesians are in Pavilion 8 at Devconnect ARG today.

Come for a Trustless t-shirt, stay for the trustless rollups with permissionless fraud proofs and Linux execution.

Repost: https://x.com/carlofragni/status/1991510137761091922

Stage 2 Rollups here. May we meet you?

But what’s the buzz, and what do Stage 2 Rollups mean, and why do they matter? 👇🧵

Stage 2 is about full decentralization for real-world deployment, user safety, and minimal trusted intervention. With verifiable computation and strong security, the system relies on code itself as the ultimate authority, enabling applications to fulfill the promises of Web3.

So, rollups with no 'training wheels' and a permissionless fraud-proof system where anyone can submit a proof. And voilà: Cartesi Rollups + the PRT fraud-proof implementation in Honeypot, the first Stage 2 app on Ethereum mainnet, tackling all L2BEAT’s L2 risk rosette slices ↓

Cartesi’s PRT Honeypot showcases these features in action while testing the full architecture. Moreover, v2 introduces a bond-and-refund mechanism that strengthens protection against delay attacks while providing partial refunds for honest validators. Get to know all about it:

Dive into the research papers to learn more about the PRT algorithm here https://arxiv.org/abs/2212.12439 and here https://arxiv.org/abs/2411.05463, or if you’re on the ground at Devconnect ARG, swing by the L2 District to get the breakdown first-hand from our contributors and L2BEAT:

Repost: https://fxtwitter.com/cartesiproject/status/1991144494373487088

Already day two of Devconnect ARG. Swing by our Stage 2 Rollups stand in the L2 District at Ethereum’s World Fair to chat with co-hosts Cartesians and L2BEAT team members. Share what you learn or your vibe check on X, tag us both, and take home a Trustless t-shirt and stickers.

Repost: https://x.com/cartesiproject/status/1990782078431203527

GM Devconnect ARG and GM to everyone at Devconnect!

Our contributors are on site, so here’s who you can meet IRL to talk all things Cartesi: Felipe Argento, Bruno Maia, Gabriel Coutinho, Carlo Fragni, Guilherme Dantas, Henrique Marlon, Milton Jonathan, Pedro Argento, Danilo Tuler🫡

Repost: https://x.com/cartesiproject/status/1990419732751941903

Road to Devconnect ARG! Our contributors are heading from Brazil to Argentina for a week full of knowledge and networking. Find us in the L2 District at Ethereum’s World Fair, where we’ll be cohosting a stand with L2BEAT to explore all things Stage 2 Rollups. Excited to meet y'all!

Repost: https://x.com/efdevcon/status/1988728547461197946

PRT Honeypot v2 is live on mainnet, now protected by the PRT fraud-proof system with a bond and refund mechanism.

The new design strengthens protection against delay attacks while introducing partial refunds for honest validators. Read more about it ↓

In this version, only the “advance match” step in disputes is refundable. Ultimately, the aim is to make altruistic validation as close to free as possible.

How bonds work: Validators post bonds when claiming, deterring spam and Sybil attacks while allowing honest participants to recover gas from the permissionless advance match.

If a claim is invalid, part of the slashed bond refunds those contributors, and part rewards the first validator who posted the correct claim.

The bond system is designed to be compatible with MEV-Share–style incentives, which have yet to become active in the node implementation.

Developers can explore the details here: github.com/cartesi/dave/tree/main/prt

Ready to challenge the architecture and try to crack PRT Honeypot v2?

20,000 CTSI are in the pot, and the bounty will keep growing. Hack it and claim the reward by draining the contract: honeypot.cartesi.io

Repost: https://fxtwitter.com/cartesiproject/status/1988970199794741582

we're sorry

Repost: https://x.com/cartesiproject/status/1988638003141771540

While events in Brazil might have wrapped up, Cartesians are still on the ground, spreading the word! Excited to see Joao Garcia at Lunar Strategy’s event today, this time in Portugal, mingling with the local Lisbon community. If you’re around, be sure to say hi and snap a pic!

Repost: https://x.com/lunarstrategy/status/1988252921239400923?s=46&t=tt0vf2syxA00nU3tvp5kFQ

GM after a busy weekend at ETHLatam!
Our contributors Carlo Fragni, Bruno Maia, and Henrique Marlon were on a roll, representing Cartesi across panels, interviews, demos, and presentations. Loved reconnecting with the Brazilian community!

Next stop: Devconnect ARG🇦🇷 Who’s ready?

Repost: https://x.com/cartesiproject/status/1987884249731784927

GM after a busy weekend at ETHLatam!
Our contributors Carlo Fragni, Bruno Maia, and Henrique Marlon were on a roll, representing Cartesi across panels, interviews, demos, and presentations. Loved reconnecting with the Brazilian community!

Next stop: Devconnect ARG🇦🇷 Who’s ready?

Repost: https://x.com/cartesiproject/status/1987884249731784927?s=20

GM after a busy weekend at ETHLatam!
Our contributors Carlo Fragni, Bruno Maia, and Henrique Marlon were on a roll, representing Cartesi across panels, interviews, demos, and presentations. Loved reconnecting with the Brazilian community!

Next stop: Devconnect ARG🇦🇷 Who’s ready?

Repost: https://x.com/cartesiproject/status/1987884249731784927?s=20

Stay connected and never miss a moment of the journey to bring verifiable Linux infra onchain! Catch the latest announcements, chat with fellow Cartesians, and hang out with our AI companion in the Telegram group. Join the official Cartesi community here: https://t.me/cartesiproject

Repost: https://x.com/cartesiproject/status/1986071140134232312

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

The latest Cartesi Ecosystem Updates blog is out! Dive into the progress across our ecosystem, from tech and dev tooling, community and events highlights, to key developments in our fraud proofs and infra. See how October continued to shape the project.
↓
https://cartesi.io/blog/ecosystem_updates_10/

Repost: https://x.com/cartesiproject/status/1984259092526092496

Linux does the work, Ethereum keeps it honest.

That’s Stage 2 Rollups on Cartesi.

Repost: https://x.com/cartesiproject/status/1983896812420579500

Time flew by, and students wrapped up their Cartesi Rollups course. Guided by Prof Antonio Rocha, their drive to solve real-world problems led them to explore new use cases. Let’s take a closer look at EpiScope, a project for verifiable health data analytics by Henrique Bisneto. ↓

EpiScope aims to process and analyze arbovirus diagnostics in a verifiable, transparent, and secure way. Built in Python, its backend uses machine learning with Google Gemini and is served via Flask and GraphQL, powered by Cartesi’s Linux environment.
https://github.com/bisnet0/EpiScope-dapp

User data is processed and analyzed transparently via smart contracts. Since Cartesi runs computations off-chain for efficiency and records only results onchain, this provides a scalable and trustworthy approach to healthcare data management. Read more: https://www.linkedin.com/posts/bisnet0_blockchain-web3-cartesi-activity-7385053163080286208-5Pac/

Exciting to see our tech in students’ final projects!

Ready to build with Cartesi as well? All the documentation you need is at your fingertips: https://docs.cartesi.io/get-started, and our tech contributors are just a click away on Discord to help you get started: http://discord.gg/cartesi

Repost: https://fxtwitter.com/cartesiproject/status/1983534447216759166

Friday is here, and with it comes a new edition of Cartesi Weekly, packed with the latest from the ecosystem 🐧

On the tech side, Rollups Contracts 2.1.0-alpha.1 is out. This alpha release adds new view functions to help the reference node sync faster and updates key dependencies. For the curious devs, check out the full GitHub release:
→ https://github.com/cartesi/rollups-contracts/releases/tag/v2.1.0-alpha.1

The Machine Guest Tools v0.17.2 has rolled out. This update fixes the image non-determinism issue and improves request handling for apps without outputs. These changes will support the upcoming Honeypot release:
→ https://github.com/cartesi/machine-guest-tools/releases/tag/v0.17.2

Ecosystem news comes from Brazil once again, where Prof. Rocha is in full swing teaching Web3, Blockchain, and Cartesi Rollups at UFBA, powered by the university branch TomorrowUFBA. Beyond that, the results are already showing from the previous course hosted for RedeRNP and partners with hands-on Cartesi practice. If you speak Portuguese, take a stroll on LinkedIn to see what the students have been building:
→ https://www.linkedin.com/posts/antonio-rocha-02754099_o-que-fazer-com-o-excedente-de-energia-para-activity-7384952813472100352-5_SX/
→ https://www.linkedin.com/posts/antonio-rocha-02754099_blockchain-web3-cartesi-activity-7385029688710041600-2K6J

On the PR and media front, we’ve reached a Dutch audience thanks to Bitcoin Magazine NL. They hosted our ecosystem growth contributor Carlo Fragni and put together both a Dutch article and a podcast episode. ICYMI, catch up here:
→ https://bitcoinmagazine.nl/nieuws/cartesis-carlo-fragni-deelt-inzichten-over-cartesi-app-rollups-en-blockchainontwikkeling
→ https://www.youtube.com/watch?v=rW7phSKejRs

That’s all for now. For any questions, find us on Discord or Telegram:
→ https://discord.gg/cartesi
→ https://t.me/cartesiproject
Have a great weekend!

Repost: https://fxtwitter.com/cartesiproject/status/1981707380883866054

Stay updated on everything happening in the Cartesi ecosystem. Subscribe to the newsletter for monthly insights and development highlights delivered straight to your inbox, plus a few surprise merch drops you won’t want to miss:
https://mailchi.mp/cartesi/email-newsletter

Repost: https://x.com/cartesiproject/status/1980982565554270605