# Cartesi Ecosystem Updates #11, 2025 By [Cartesi](https://paragraph.com/@cartesians) · 2025-12-08 --- ![](https://storage.googleapis.com/papyrus_images/0fd7760defc7fa39a384326c4f9522c0ba907b94fb4d7af3f04f23d4a7b1dba2.png) November vanished in a blink, launching us straight into the final month of the quarter and the year. But before it flew by, it delivered a power-packed period of activity! Tech advancements, major Dev Advocacy and Ecosystem Growth wins, the highly-anticipated launch of PRT Honeypot v2 (now featuring bonds and improved security - [**hello again Stage 2**](https://l2beat.com/scaling/summary?filters=%7B%22stage%22%3A%7B%22values%22%3A%5B%22Stage+2%22%5D%7D%7D)), and the show-stealing momentum from Devconnect Argentina after an eventful weekend at ETHLatam in Brazil, all made headlines. The excitement didn't stop there: CTSI stakers are set to be rewarded by Espresso's airdrop, and podcasts, media features, and community threads have been well served! Let’s dive into the ecosystem highlights from last month. **Tech** ======== November has brought us an upgrade to the fraud proof system with stronger security and smoother developer experience. The features we introduced in the last monthly updates have now moved from sneak-peek to a public release, delivering the [**Permissionless Refereed Tournament(PRT) v2.0.0**](https://github.com/cartesi/dave/releases/tag/v2.0.0) system. The new version brings major on-chain improvements - including revertible advance requests, a Sybil-resistant bond mechanism, reduced deployment transactions, and improved interfaces and events, while also resolving a fail-stop bug. Off-chain, reliability is boosted through safer snapshot cleanup, fixes for empty-epoch panics and sentinel errors, and a leaner node client. With artifacts now published directly via GitHub releases and improved devnet builds, PRT 2.0 is now more secure, polished, and developer-friendly. With the old Honeypot gone, the new Honeypot was poised to resurface. Secured by Cartesi's PRT fraud-proof system, [**Honeypot**](https://honeypot.cartesi.io/) is our bug-bounty rollup application designed to test the security of Cartesi's appchain framework. Anyone can put it to test by hacking the application and draining the funds locked in the rollup contract.  After PRT-Honeypot v1 surfaced a liveness bug, a new [**version**](https://github.com/cartesi/honeypot/releases/tag/v3.0.0) has now been deployed on Ethereum mainnet, complete with the upgraded PRT v2 algorithm discussed above, which brings Honeypot back to the L2BEAT dashboard as a [**Stage 2 rollup**](https://l2beat.com/scaling/summary?filters=%7B%22stage%22%3A%7B%22values%22%3A%5B%22Stage+2%22%5D%7D%7D). [![User Avatar](https://storage.googleapis.com/papyrus_images/4291fff2c5ccf866a9925c2e233752b1782f4d05f857cf466d6379b32f250ae3.jpg)](https://twitter.com/cartesiproject) [Cartesi](https://twitter.com/cartesiproject) [@cartesiproject](https://twitter.com/cartesiproject) [![Twitter Logo](https://paragraph.com/editor/twitter/logo.png)](https://twitter.com/cartesiproject/status/1988970199794741582) 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 ↓ ![](https://pbs.twimg.com/amplify_video_thumb/1988970148078972928/img/gBAyTEe1EmptYMSq.jpg) [![Like Icon](https://paragraph.com/editor/twitter/heart.png) 30](https://twitter.com/cartesiproject/status/1988970199794741582)[ 3:00 PM • Nov 13, 2025 ](https://twitter.com/cartesiproject/status/1988970199794741582) The onchain Cartesi machine has also seen progress. And Cartesi RISC-V Solidity Emulator - the onchain host implementation of the Cartesi Machine Specification - has advanced with a new PR that introduces enhanced memory translation capabilities. The update adds support for Translation Lookaside Buffer (TLB) management through new ECALL functions and a dedicated shadow TLB region in memory, improving the fidelity and precision of the Cartesi Machine’s low-level execution model. Read more details on the PR [**here**](https://github.com/cartesi/machine-solidity-step/pull/83). **Developer Tooling** ===================== On Developer Experience, our dev advocates have been busy shipping explainer threads and doubling down on X posting. [**João Garcia**](https://x.com/joaopdgarcia) shared insights on fraud proofs and ZK proofs, and why both still matter as core validation mechanisms for rollups in a ZK-leaning world. Check out this overview of the trade-offs, and intuitions about a future where hybrid models emerge, with fraud proofs as fallback and ZK amplifying verification: [![User Avatar](https://storage.googleapis.com/papyrus_images/6cc8173bf161dba1a7a2d0fd62aecb4820fa8422fc067a9d97d6a2677f45a84b.jpg)](https://twitter.com/joaopdgarcia) [Joao Garcia](https://twitter.com/joaopdgarcia) [@joaopdgarcia](https://twitter.com/joaopdgarcia) [![Twitter Logo](https://paragraph.com/editor/twitter/logo.png)](https://twitter.com/joaopdgarcia/status/1993323797190259030) The role of fraud-proofs in a ZK World Throughout [@EFDevcon](https://twitter.com/EFDevcon), the Stage 2 Rollups stand kept the [@cartesiproject](https://twitter.com/cartesiproject) team busy, walking builders through fraud proofs and zk proofs. Let’s talk about validation mechanisms in Web3 and why fraud proofs still matter. [![Like Icon](https://paragraph.com/editor/twitter/heart.png) 34](https://twitter.com/joaopdgarcia/status/1993323797190259030)[ 3:20 PM • Nov 25, 2025 ](https://twitter.com/joaopdgarcia/status/1993323797190259030) On another topic, contributor [**Shaheen Admed**](https://x.com/riseandshaheen) shared an overview breaking down the developer experience across [**Aztec**](https://aztec.network/), [**Risc Zero**](https://risczero.com/), [**Arbitrum**](https://arbitrum.io/) Stylus, and Cartesi, four protocols that broaden Ethereum’s execution options and enable development beyond Solidity through Noir, RISC-V, and WASM. Make sure you don’t miss these key takeaways from the comparison, and drop a follow to stay connected: [![User Avatar](https://storage.googleapis.com/papyrus_images/0223e8fc65accdf246638cea3b14a2b6357ad42981a5cb3e9f16584f8020fb47.jpg)](https://twitter.com/riseandshaheen) [Shaheen Ahmed 🐧](https://twitter.com/riseandshaheen) [@riseandshaheen](https://twitter.com/riseandshaheen) [![Twitter Logo](https://paragraph.com/editor/twitter/logo.png)](https://twitter.com/riseandshaheen/status/1993968058952778133) How is the DevEx evolving in Web3? I've been thinking about this a lot lately and did some experiments with my homies [@joaopdgarcia](https://twitter.com/joaopdgarcia) & [@fergo617](https://twitter.com/fergo617) Here are some insights we gathered on [@aztecnetwork](https://twitter.com/aztecnetwork) [@RiscZero](https://twitter.com/RiscZero) [@arbitrum](https://twitter.com/arbitrum) Stylus, and of course [@cartesiproject](https://twitter.com/cartesiproject) ![🐧](https://abs-0.twimg.com/emoji/v2/72x72/1f427.png) ![](https://storage.googleapis.com/papyrus_images/00d1190452052f3dd73b6977be70cdb8e848738496811f7de902c8b60725aeca.jpg) [![Like Icon](https://paragraph.com/editor/twitter/heart.png) 36](https://twitter.com/riseandshaheen/status/1993968058952778133)[ 10:00 AM • Nov 27, 2025 ](https://twitter.com/riseandshaheen/status/1993968058952778133) And that’s not all. If you thought you couldn’t vibe with coding a Cartesi application, think again. Shaheen walks you through a quick voting application built with Cursor in this tutorial [**here**](https://x.com/riseandshaheen/status/1986313297755578424). **Ecosystem** ============= Cartesi has launched a “time to deploy” [**challenge**](https://github.com/Mugen-Builders/cartesi-challenge) with students from the Cartesi-based course at [**Fluminense Federal University**](https://www.uff.br/) (UFF in Brazil), aimed at better understanding and improving the developer journey. Students will build a simple Beacon crowdfunding app to help measure how efficiently newcomers navigate Cartesi’s documentation, tooling, and asset workflows. By implementing the backend logic, testing deposits, and emitting the final output when the goal is reached, they will generate valuable metrics for refining resources and onboarding, directly contributing to Cartesi’s continuous improvement efforts. **Events** ========== November kicked off with [**ETHLatam**](https://ethlatam.org/) in São Paulo, Brazil, and progressed strongly with [**Devconnect**](https://devconnect.org/) in Buenos Aires, Argentina.ETHLatam has seen great participation, and [**Vitalik Buterin**](https://x.com/VitalikButerin)’s first visit to Brazil highlighted the region’s growth, with energy doubling when he took the stage. Our contributors didn’t hold back either. Cartesi was represented at the main event by [**Carlo Fragni**](https://x.com/carlofragni), who presented on [**RIVES**](https://x.com/rives_io), and [**Henrique Marlon**](https://x.com/henrimarlon_), who spoke about zk proofs and fraud proofs, highlighting that there is no silver bullet and that both solutions have their matching use cases: [![User Avatar](https://storage.googleapis.com/papyrus_images/2cb519559408358d06a5bf313c30964303b8928822c76d23b2df97f23667629c.jpg)](https://twitter.com/henrimarlon_) [Henrique Marlon 🐝🐧](https://twitter.com/henrimarlon_) [@henrimarlon\_](https://twitter.com/henrimarlon_) [![Twitter Logo](https://paragraph.com/editor/twitter/logo.png)](https://twitter.com/henrimarlon_/status/1987558100526620676) It was a pleasure to be a speaker at [@ethlatam](https://twitter.com/ethlatam) this year. A historic milestone for me, considering I began developing in blockchain at events like these. I joined a panel on “Fraud-Proofs in a ZK World” and shared a bit about the research that [@cartesiproject](https://twitter.com/cartesiproject) has been doing. ![](https://storage.googleapis.com/papyrus_images/bd40e57dcc4407aa74c671a9c798df6fcd82c8c737e76e6ee08d45301bad1272.jpg) [![Like Icon](https://paragraph.com/editor/twitter/heart.png) 26](https://twitter.com/henrimarlon_/status/1987558100526620676)[ 5:29 PM • Nov 9, 2025 ](https://twitter.com/henrimarlon_/status/1987558100526620676) And a sneak peek at their proof of presence during Vitalik’s visit: [![User Avatar](https://storage.googleapis.com/papyrus_images/14aa9f303d8cb40166bcd0d5b30b974931e4daeb3f66f9e1e2d50fb75ffb3896.jpg)](https://twitter.com/carlofragni) [Carlo Fragni 🐧🐝](https://twitter.com/carlofragni) [@carlofragni](https://twitter.com/carlofragni) [![Twitter Logo](https://paragraph.com/editor/twitter/logo.png)](https://twitter.com/carlofragni/status/1987895247175614672) Proof of presence with [@VitalikButerin](https://twitter.com/VitalikButerin) along with my amazing pal [@henrimarlon\_](https://twitter.com/henrimarlon_) from [@cartesiproject](https://twitter.com/cartesiproject) and the incredible local community at [@ethlatam](https://twitter.com/ethlatam) . Epic! P.S.: Couldn't find us? Bottom right ![😊](https://abs-0.twimg.com/emoji/v2/72x72/1f60a.png) ![](https://storage.googleapis.com/papyrus_images/403d55a4373b4956ea47e3883d918941f3a7c03715af650fc939064a2b4768f6.jpg) [![Like Icon](https://paragraph.com/editor/twitter/heart.png) 26](https://twitter.com/carlofragni/status/1987895247175614672)[ 3:48 PM • Nov 10, 2025 ](https://twitter.com/carlofragni/status/1987895247175614672) At the side events, our Ecosystem Growth Lead, [**Bruno Maia**](https://x.com/bmaia_expat), spoke at [**Arbilink**](https://x.com/ModularCrypto/status/1986915343605113245?s=20), Arbitrum’s Portuguese community event organized by [**Modular Crypto**](https://x.com/ModularCrypto), on a panel about the future of payments and stablecoins in LATAM. And he also fit in an in-person interview on [**Exame**](https://x.com/exame)’s Future of Monday podcast, Brazil’s top financial media outlet, that you can watch [**here**](https://www.youtube.com/watch?v=j7l15KwVslw) if you speak Portuguese. Later in the month, it was time for the most awaited event of the year, [**Devconnect Argentina**](https://x.com/EFDevcon), and it did not disappoint. Cartesi marked its presence in the L2District and cohosted a dedicated Stage 2 rollups stand with [**L2BEAT**](https://l2beat.com/scaling/summary) [![User Avatar](https://storage.googleapis.com/papyrus_images/01f8ebae61b74d056de772e17ba8645b4f20ae2e451a02472f7cdedff66142e0.jpg)](https://twitter.com/jesuviloria_) [Jesus Viloria](https://twitter.com/jesuviloria_) [@jesuviloria\_](https://twitter.com/jesuviloria_) [![Twitter Logo](https://paragraph.com/editor/twitter/logo.png)](https://twitter.com/jesuviloria_/status/1990843843554537557) On [@EFDevcon](https://twitter.com/EFDevcon) with [@cartesiproject](https://twitter.com/cartesiproject) , [@l2beat](https://twitter.com/l2beat) learning about L2 ![](https://storage.googleapis.com/papyrus_images/d3ad9acb0bc6209c7114d7a8c3465cb39e3f1273faec949d968ef4828d653c6d.jpg) [![Like Icon](https://paragraph.com/editor/twitter/heart.png) 17](https://twitter.com/jesuviloria_/status/1990843843554537557)[ 7:05 PM • Nov 18, 2025 ](https://twitter.com/jesuviloria_/status/1990843843554537557) [**Swag**](https://x.com/cartesiproject/status/1990782078431203527?s=20) was on point, [**photos**](https://x.com/GeeAkpan/status/1990472386991567003?s=20) on the ground were snapped, the [**venue**](https://x.com/carlofragni/status/1990839120994668719?s=20) was captured, and [**Stage 2 glasses**](https://x.com/0xbalala/status/1990822293430280466?s=20) made history: [![User Avatar](https://storage.googleapis.com/papyrus_images/14aa9f303d8cb40166bcd0d5b30b974931e4daeb3f66f9e1e2d50fb75ffb3896.jpg)](https://twitter.com/carlofragni) [Carlo Fragni 🐧🐝](https://twitter.com/carlofragni) [@carlofragni](https://twitter.com/carlofragni) [![Twitter Logo](https://paragraph.com/editor/twitter/logo.png)](https://twitter.com/carlofragni/status/1990520330650333200) Proud to be stage 2! Want to know more? Come talk to the [@cartesiproject](https://twitter.com/cartesiproject) and [@l2beat](https://twitter.com/l2beat) team right by the L2 District at [@EFDevcon](https://twitter.com/EFDevcon) ![](https://storage.googleapis.com/papyrus_images/073322cd5680a2cbfeebfe440f81367bef959383d4359393ae81e57892c8de58.jpg) [![Like Icon](https://paragraph.com/editor/twitter/heart.png) 33](https://twitter.com/carlofragni/status/1990520330650333200)[ 9:40 PM • Nov 17, 2025 ](https://twitter.com/carlofragni/status/1990520330650333200) Throughout the week, contributors engaged participants on rollup decentralization and security, the need for more Stage 2 rollups, and the L2 risk rosette features essential to strengthening the Ethereum ecosystem. And in case you’re wondering what the fuss is about Cartesi being Stage 2 and why it matters, get up to speed with this thread [**here**](https://x.com/cartesiproject/status/1991144494373487088?s=20) and check out the trustless t-shirts that got everyone hyped, through the lens of a local participant: [![User Avatar](https://storage.googleapis.com/papyrus_images/ee1566434ec54cde03b3db0f2f5f98a2649ee9c433b575b75695baa882f28e89.jpg)](https://twitter.com/Demian_C1998) [Demián](https://twitter.com/Demian_C1998) [@Demian\_C1998](https://twitter.com/Demian_C1998) [![Twitter Logo](https://paragraph.com/editor/twitter/logo.png)](https://twitter.com/Demian_C1998/status/1990422579702538653) Acá aprendiendo de Rollups con [@cartesiproject](https://twitter.com/cartesiproject) [@l2beat](https://twitter.com/l2beat) ![](https://storage.googleapis.com/papyrus_images/67625961d28e0a1e6b77fae3654cfe808afdf343e0808fdd2f071646a08240b9.jpg) [![Like Icon](https://paragraph.com/editor/twitter/heart.png) 4](https://twitter.com/Demian_C1998/status/1990422579702538653)[ 3:11 PM • Nov 17, 2025 ](https://twitter.com/Demian_C1998/status/1990422579702538653) A star emerged among our contributors who worked hard on the ground to ensure Cartesi was well-represented, to connect and make the most out of leads and networking opportunities, and even to create content and post updates for the community to get a sneak peek, firsthand, of what was happening there. A much-deserved kudos is due to our Solution Architect and contributor to the Ecosystem Growth Unit, [**Carlo Fragni**](https://x.com/carlofragni). Click that button and offer him your follow on X in appreciation! To wrap up Devconnect, here’s a quick roundup of the week’s top highlights: [![User Avatar](https://storage.googleapis.com/papyrus_images/4291fff2c5ccf866a9925c2e233752b1782f4d05f857cf466d6379b32f250ae3.jpg)](https://twitter.com/cartesiproject) [Cartesi](https://twitter.com/cartesiproject) [@cartesiproject](https://twitter.com/cartesiproject) [![Twitter Logo](https://paragraph.com/editor/twitter/logo.png)](https://twitter.com/cartesiproject/status/1991869330787844285) It’s Friday of the [@EFDevcon](https://twitter.com/EFDevcon) ARG event, so here’s Cartesi Weekly from Devconnect and beyond ![🐧](https://abs-0.twimg.com/emoji/v2/72x72/1f427.png) Contributors have been hard at work on the ground, co-hosting the Stage 2 Rollups stand with [@l2beat](https://twitter.com/l2beat). We loved seeing proofs of presence shared by [@GeeAkpan](https://twitter.com/GeeAkpan) and many others throughout ![](https://pbs.twimg.com/amplify_video_thumb/1991869273770442752/img/dokVXa_Z72pN2BVt.jpg) [![Like Icon](https://paragraph.com/editor/twitter/heart.png) 36](https://twitter.com/cartesiproject/status/1991869330787844285)[ 3:00 PM • Nov 21, 2025 ](https://twitter.com/cartesiproject/status/1991869330787844285) **Community & Media** ===================== The community has had some great news this past month. [**Espresso Foundation**](https://x.com/espressoFNDN) announced rewards for long-term CTSI stakers. Cartesi’s partner for composability and fast finality (remember the three Cartesi dapp prototypes that were first to integrate Espresso? If not, refresh your memory [**here**](https://cartesi.io/blog/cartesi_espresso_integration/)) has included the Cartesi community as one of the paths to receive their airdrop. Anyone who has staked CTSI onchain via Cartesi’s Explorer should verify their wallet address as soon as the claim goes live. Stay tuned for updates as the ESP token launch seems to be approaching fast: [![User Avatar](https://storage.googleapis.com/papyrus_images/11f908465afba48d232e462510a40ea733a453b08e79364517e281fb932b2b81.jpg)](https://twitter.com/espressoFNDN) [Espresso Foundation](https://twitter.com/espressoFNDN) [@espressoFNDN](https://twitter.com/espressoFNDN) [![Twitter Logo](https://paragraph.com/editor/twitter/logo.png)](https://twitter.com/espressoFNDN/status/1986871911025123380) “Name the project whose path we've shown.” CARTESI [@cartesiproject](https://twitter.com/cartesiproject) is developer of a Linux-based VM, enabling developers to build blockchain applications in a familiar environment using their favorite languages and libraries. Cartesi's team shares our vision of a future in ![](https://pbs.twimg.com/amplify_video_thumb/1986869152724721666/img/2HvfEQ3LIWC-DmjG.jpg) [![User Avatar](https://storage.googleapis.com/papyrus_images/11f908465afba48d232e462510a40ea733a453b08e79364517e281fb932b2b81.jpg)](https://twitter.com/espressoFNDN) [Espresso Foundation](https://twitter.com/espressoFNDN) [@espressoFNDN](https://twitter.com/espressoFNDN) [![Twitter Logo](https://paragraph.com/editor/twitter/logo.png)](https://twitter.com/espressoFNDN/status/1986770357383250397) Path to TGE #8 Penguin-powered VM for appchain code. They sought us out, built their own road. Events co-hosted across years past. Time-traveling partnership built to last. Together we forge the futures we've known. Name the project whose path we've shown. [![Like Icon](https://paragraph.com/editor/twitter/heart.png) 144](https://twitter.com/espressoFNDN/status/1986871911025123380)[ 8:02 PM • Nov 7, 2025 ](https://twitter.com/espressoFNDN/status/1986871911025123380) On the PR front, Devconnect gave our contributors the chance to do in-person interviews with media outlets like [**DL Research**](https://x.com/dl_research) and [**Genzio**](https://x.com/GenzioCo). Right on the ground at the L2District main venue, [**Carlo Fragni**](https://x.com/carlofragni) spoke with Eli from Genzio. Watch the interview here: [![User Avatar](https://storage.googleapis.com/papyrus_images/9217456c3f0fd5345dc58a3b465915f209bd45a7b9d2002458127cb38583f518.jpg)](https://twitter.com/GenzioCo) [Genzio Media & Marketing](https://twitter.com/GenzioCo) [@GenzioCo](https://twitter.com/GenzioCo) [![Twitter Logo](https://paragraph.com/editor/twitter/logo.png)](https://twitter.com/GenzioCo/status/1996472111288696838) Developers want flexibility. Cartesi wants to give it to them. During [@EFDevcon](https://twitter.com/EFDevcon), [@LockFryer](https://twitter.com/LockFryer) joined [@carlofragni](https://twitter.com/carlofragni) from [@cartesiproject](https://twitter.com/cartesiproject) to talk dev trends, real applications being built, and why the Cartesi VM is unlocking new possibilities. 0:24 - Meet Carlo 1:39 - Who’s building ![](https://pbs.twimg.com/amplify_video_thumb/1996467344349044736/img/EIrVstXmUBQ0zXl7.jpg) [![Like Icon](https://paragraph.com/editor/twitter/heart.png) 184](https://twitter.com/GenzioCo/status/1996472111288696838)[ 7:50 AM • Dec 4, 2025 ](https://twitter.com/GenzioCo/status/1996472111288696838) Meanwhile, Co-Founder [**Felipe Argento**](https://x.com/felipeargento) walked the DL Research hosts through Cartesi’s journey from an AI marketplace idea to today’s RISC-V-based execution layer, covering Stage 2 and the PRT fraud-proof system with bonds, as well as our Ethereum-first, trustless approach to building systems no one controls. Give it a read: [![User Avatar](https://storage.googleapis.com/papyrus_images/9c4af7f25f069206a9697aafb679eb218cbe515bde132c688aa52de0351698b3.png)](https://twitter.com/dl_research) [DL Research](https://twitter.com/dl_research) [@dl\_research](https://twitter.com/dl_research) [![Twitter Logo](https://paragraph.com/editor/twitter/logo.png)](https://twitter.com/dl_research/status/1995572745598550081) Honeypots usually spell trouble, but [@cartesiproject](https://twitter.com/cartesiproject) used one to test its rollup security. At DevConnect we spoke with cofounder [@felipeargento](https://twitter.com/felipeargento) about Stage 2 decentralisation, Linux-based execution and the move toward permissionless fraud proofs. [dlnews.com/research/inter…](https://t.co/srLEDYxSdL) [![Like Icon](https://paragraph.com/editor/twitter/heart.png) 16](https://twitter.com/dl_research/status/1995572745598550081)[ 8:16 PM • Dec 1, 2025 ](https://twitter.com/dl_research/status/1995572745598550081) Our Portuguese-speaking audience and Brazilian community got a treat as well: they could watch a podcast hosted in their native language by [**Modular Crypto**](https://www.modularcrypto.xyz/), featuring our contributor Carlo Fragni, who also authored their latest [**newsletter**](https://newsletter.modularcrypto.xyz/p/trump-quer-superpote-ncia-cripto-pump-fun-no-pix) edition at the start of the month. Among the community members, [**Perrie**](https://x.com/PerrieDExplorer) did it again and dropped a new banger explainer in response to our Dev Advocacy Lead’s [**thread**](https://x.com/joaopdgarcia/status/1993323797190259030?s=20) about the role of fraud proofs in a ZK world and the related trade-offs. Santa has already rewarded her with a hoodie for always diving in and unpacking tech threads with ease. Totally well deserved, right? [![User Avatar](https://storage.googleapis.com/papyrus_images/89fdc2b7601014237fdda44ebed49a6d8147b0ccb368747ed9b956ffafc8e9ba.jpg)](https://twitter.com/PerrieDExplorer) [Perrie 🎱](https://twitter.com/PerrieDExplorer) [@PerrieDExplorer](https://twitter.com/PerrieDExplorer) [![Twitter Logo](https://paragraph.com/editor/twitter/logo.png)](https://twitter.com/PerrieDExplorer/status/1993972258277060964) In a recent thread, [@joaopdgarcia](https://twitter.com/joaopdgarcia) a Cartesi developer explained the difference between fraud proofs and ZK proofs in rollups. He described fraud proofs as a way to “reveal lies” by re-executing disputed steps, and ZK proofs as mathematical statements asserting correctness ![](https://storage.googleapis.com/papyrus_images/6f6453ef6272d35d45fe551f4889f8268e8e462fb3bf647d2ee45dfbddb6a869.jpg) [![User Avatar](https://storage.googleapis.com/papyrus_images/6cc8173bf161dba1a7a2d0fd62aecb4820fa8422fc067a9d97d6a2677f45a84b.jpg)](https://twitter.com/joaopdgarcia) [Joao Garcia](https://twitter.com/joaopdgarcia) [@joaopdgarcia](https://twitter.com/joaopdgarcia) [![Twitter Logo](https://paragraph.com/editor/twitter/logo.png)](https://twitter.com/joaopdgarcia/status/1993323797190259030) The role of fraud-proofs in a ZK World Throughout [@EFDevcon](https://twitter.com/EFDevcon), the Stage 2 Rollups stand kept the [@cartesiproject](https://twitter.com/cartesiproject) team busy, walking builders through fraud proofs and zk proofs. Let’s talk about validation mechanisms in Web3 and why fraud proofs still matter. [![Like Icon](https://paragraph.com/editor/twitter/heart.png) 40](https://twitter.com/PerrieDExplorer/status/1993972258277060964)[ 10:16 AM • Nov 27, 2025 ](https://twitter.com/PerrieDExplorer/status/1993972258277060964) Psst: another hoodie hides in this month’s newsletter edition. The fastest reader to claim it will get it delivered to their door. If you are not yet a subscriber, sign up [**here**](https://mailchi.mp/cartesi/email-newsletter). And a heads-up for everyone reading this and willing to score some holiday swag: keep your eyes peeled for a campaign counting down the days to Christmas with daily quests. This December it’s raining, or should we say snowing, Cartesi merch packs and hoodies! **That’s a Wrap** ================= That's all for now after a packed and productive November. From protocol upgrades and developer insights to major conference moments and ecosystem wins, the month pushed Cartesi forward in all the right ways. December is already shaping up to keep that momentum going. Catch you in the next update, and in the meantime keep in touch and follow the latest updates on [**Discord**](https://discord.com/invite/cartesi), [**X**](https://x.com/cartesiproject), [**Telegram**](https://t.me/cartesiproject), and [**beyond**](https://linktr.ee/cartesi). --- *Originally published on [Cartesi](https://paragraph.com/@cartesians/cartesi-ecosystem-updates-11-2025)*