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.🔥🚀

RT @neutron_org: We're taking over CosmWasm.

🚨 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 👇.🧵.

🎂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.👇.

/4.📄 Full details in the advisories:.• • • 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👇.