Just a reminder: CosmWasm is the heartbeat of Cosmos! With 100+ chains (over 90% of the ecosystem) using it and 1.77M+ downloads of the standard library, it’s clear: #CosmWasm is THE go-to for smart contracts. When everyone’s using it, you know it’s gotta be next-level.🔥🚀

We're taking over CosmWasm https://t.co/CQgou3xvoG

🚨 Confio ends CosmWasm maintenance after June 30 🚨 After 6 years of building and maintaining the CosmWasm smart contract framework, @confio_tech steps back from official maintenance duties. Here’s what’s happening and what’s next⬇️

/4 ⚙️Other upgrades you'll love: - New cw-schema (cleaner than JSON) - Rust 1.86+ support - Wasmer 5.0.6 - Better error types & testing tools - Storage queries + tx hash in Env

/3 💸 Transfer callbacks that actually help. 3.0 adds a transfer field so you instantly know who sent what over IBC — no more parsing raw packets like it’s 2022.

/2 🌉 IBCv2, fully integrated New entrypoints (ibc2_packet_send, etc.) + support for async acks, callbacks, and metadata. Cross-chain logic just got way easier to build.

CosmWasm 3.0 is here!! The ultimate upgrade for devs building smart contracts in the interchain. Now with full #IBCv2 support, smoother DX, and powerful new tools. Let’s dive in 👇 🧵 https://t.co/yLxjn8MzW1

🎂CosmWasm just turned 6 — that’s like… 42 in #blockchain years. From "hello world" contracts to powering real interchain apps, we’ve come a long way. Still #Wasm. Still spicy. Still cooking. Happy Birthday to the smart contract king of @cosmos.👑

8 We can't wait to see what you build with IBC v2 — from interchain dApps to chain-to-chain vibes we haven’t even imagined yet. This is more than a protocol upgrade. It’s the start of a new dev era. Let’s go #interchain, frens 🫡🚀

/7 🗓️ Mark your calendars: IBC v2 support will officially land with CosmWasm v3.0 in June. It’ll be our last major release from the @confio_tech team — so we’re going out with a bang 💥

/6 🧠 Or dive deep into docs for how to build smart contracts with IBC v2 baked in: 📚

/5 🔥 Wanna test it out? We got you. Check this example contract already cooking with IBC v2 sauce: 🔗

/4 Here’s what you get in the new release: ✅ Send endpoint: Say when/where/why to ship packets ✅ Receive: Accept packets like a digital doorman ✅ Acknowledge: Confirm deliveries ✅ Timeout: Handle lost mail like a champ

/3 With IBC v2, the Cosmos Interchain stack levels up. More modular, more flexible, more omg-it-just-works. #CosmWasm now speaks fluent IBC v2 thanks to our latest pre-release: ➡️ cosmwasm-std v3.0.0-ibc2.0

/2 So like… What even is #IBC? Think of it as the TCP/IP of blockchains. 📦 Packets 📨 Channels ⏱️ Timeouts 📬 Acks And a relayer that moves data between chains like a cosmic FedEx.

🚨New Drop Alert🚨 IBC v2 support is HERE (almost 👀) in CosmWasm. If you’ve ever wanted to talk cross-chain like a pro, now’s your moment. Let’s break it down.👇 https://t.co/GCe06mtttv

/4 📄 Full details in the advisories: • https://t.co/Xob9u0d8GR • https://t.co/je5Wu2pATa • https://t.co/9HcDh9vxdv Stay safe — upgrade now and spread the word. 🔒

/3 🔍 The vulnerabilities were discovered in a Q1 2025 audit of the #CosmWasm stack, performed by Sherlock and funded by ICF/ICL. Big thanks to everyone who contributed to hardening the ecosystem!🙌

/2 ⚠️Following user feedback, we know that upgrading to 0.55+ can be tricky for older 0.5x versions (due to an #ibc-gobump). So we’ve also backported the security fixes to: • 0.54.1 • 0.53.3 Helping older chains stay secure too 🛠️

New #wasmd releases are out! We’ve just published: • 0.60.1 • 0.55.1 • 0.34.2 These patch the security issues disclosed on June 5.👇

#wasmd v0.60.0 is out! Upgraded to Cosmos SDK v0.53.0, sprinkled in some bug fixes + tweaks 🛠️ Check the changelog for the juicy bits👇 https://t.co/UgVzsKfnmu