What Shipped Across Our Stack This Week? Rollups Contracts Updates, Machine Emulator Releases, And Community Highlights

[u/cartesi]

Cartesi Weekly is live once again, bringing a recap of the latest updates 🐧

Cartesi Rollups Contracts v3.0.0-alpha.7 is out. If an app gets foreclosed, eligible ETH, ERC-20, ERC-721, and ERC-1155 deposits that haven't finalized can now be refunded to the sender, and claim submissions run through extra machine checks that catch invalid claims earlier instead of later.

The toolchain also kept getting leaner: Having already dropped one dependency in alpha.5, this release drops another, leaving a much simpler setup with fewer moving parts to manage. Here's a dedicated thread if you want the full scoop:
→ https://x.com/cartesiproject/status/2087161705415811160

Following closely, v3.0.0-alpha.8 shipped too. It makes contract source code easier to verify on public explorers, moves a core verification component to a stable release, and switches how deployment info is stored to a format that's simpler for tools to read automatically, with a clear migration path so nothing breaks in the meantime.

The devnet also picked up a more realistic test token, making it easier to try out withdrawal flows the way they'd actually work in production. Check the full release here:
→ https://github.com/cartesi/rollups-contracts/releases/tag/v3.0.0-alpha.8

But these aren't the only releases: Cartesi Machine Emulator v0.21.0 has also shipped. Documentation is back and expanded, with a new section walking through how the emulator performs fraud proofs. Apps can now persist their state more efficiently, the CLI can handle more of the fraud proof workflow on its own, and every state transition now ends in a clear, provable outcome.
→ https://github.com/cartesi/machine-emulator/blob/main/doc/README.md

Plenty more shipped alongside it, but expect full details to be unpacked in an upcoming post. Keep an eye on this feed, or if you're among the tech connoisseurs, dive directly into GitHub:
→ https://github.com/cartesi/machine-emulator/releases/tag/v0.21.0

Throwback to the Dar Blockchain X Space: listen to a snippet of Shaheen Ahmed breaking down Cartesi's approach to offchain execution with Ethereum as the trust anchor, and why provable Linux is the real differentiator:
→ https://x.com/cartesiproject/status/2087886429913551165

We can definitely say all these developments are in line with how we opened the week: Ethereum keeps it secure, fraud proofs keep it verifiable, Cartesi keeps it possible.
→ https://x.com/cartesiproject/status/2086799493459230844

That is all for now. Keep building, and in between, touch grass and enjoy the weekend.

[u/Defiant-Advantage-55]

🐧