IBC Eureka is live — enabling fast, secure Ethereum ↔ Cosmos bridging. IBC Eureka offers fast, affordable, 1-click transactions between Ethereum and Cosmos chains. It's also the canonical usage of the v2 of @ibcprotocol. Key product info🧵.

3️⃣ Get Started. Now, teams can have complete ownership and control over the ERC20 contract representing their token on Ethereum. 📂 ERC20 deployment documentation. ∟ 📂 Comsmos/ solidity-ibc-eureka. ∟

2️⃣ Benefits to Developers. ✦ Custom metadata and token naming on deployment.✦ Easier contract verification on Etherscan.✦ Increased trust in the bridged asset.✦ Complete ownership and control over the ERC20 asset. These changes may make it easier to list custom ERC20 assets.

1️⃣ What problem does this update address?. In short, more control for builders:. Many teams that bridge assets over IBC Eureka through @cosmoshub want ownership and control over their ERC20 contracts on Ethereum. The Solidity v2 upgrade allows teams to deploy custom ERC20.

Here’s what’s changed:. ✦ imp: enable use of custom ERC20s as IBCERC20.✦ feat: allow the relayer to update client without relaying packets.✦ imp: simplified migrateClient. And here's why 👇.

The IBC team has updated the IBC Solidity contracts to v2. This release simplifies client upgrades and significantly improves the developer experience for teams deploying custom ERC20 tokens. Learn more 🧵

9/ As part of our commitment to open source, the IBC blog features guest posts from contributing teams. This post by TOKI and Datachain covers how the OP Client works, its security model, and how to use it with IBC Classic. Read the full post:.

8/ IBC keeps evolving because of the people behind it. Huge credit to the teams pushing boundaries and to every contributor expanding what’s possible cross-chain. The IBC community has the best builders in the world.

7/ On May 23, the TOKI and Datachain teams completed the first transaction between ✅ OP-Sepolia ↔ Ethereum Sepolia. Coming next:.⌛ A full audit. ⌛ Support for other OP-stack chains such as @base. ⌛ Mainnet rollout after audit.

6/ To reconstruct Optimism’s L2 state, the client takes in:. → Finalized Ethereum L1 head.→ L2 block hash/number.→ A pre-image oracle for calldata. It tracks the canonical L2 chain without running a node, using the same ≥1 honest validator assumption as Optimism.

5/ To handle the compute demands of stateless verification, the OP Client runs the full L2 derivation process—as defined in Optimism’s Fault Proof Program—inside a Trusted Execution Environment (TEE). It uses finalized Ethereum L1 data as input and deterministically reconstructs.

4/ How does the OP Client work?. It follows IBC's client specification and differs from a typical light client that only verifies headers. Instead, it’s stateless—verifying full block execution, including transactions, with no local state. This design is required because L2.

3/ What is the OP Client?. It’s a stateless ICS-02 client built to verify Optimism L2 state using only finalized Ethereum L1 data. No full node required.

2/ @tokifinance & @datachain_en are long-time IBC contributors. Their team led work to bring the first bank-backed RWAs for Japan onto IBC, as well as other contributions. Now they’re building a new implementation to use IBC on OP Stack.

IBC has been enabled on @Optimism for the first time ⚛️. The first IBC transfer between OP-Sepolia and Ethereum Sepolia has been completed. It's a new implementation built by @tokifinance & @datachain_en, aiming to unlock IBC for OP Stack chains🧵

3/ What is the OP Client?. It’s a stateless ICS-02 client built to verify Optimism L2 state using only finalized Ethereum L1 data. No full node required.

2/ @tokifinance & @datachain_en are long-time IBC contributors. Their team led work to bring the first bank-backed RWAs for Japan onto IBC, as well as other contributions. Now they’re building new implementation to use IBC on OP Stack.

6/ Cosmos Hub @cosmoshub.The Cosmos ecosystem's heart and home of the ATOM token. → $89.9M IBC volume.→ 156K transfers.→ 876K total txs. These are the top IBC volume leaders of the month, as tracked by @MapOfZones ⬇️🧵

5/ dYdX @dYdX.→ $175M IBC volume.→ 18K transfers.→ 12.2M total txs. dYdX delivers high-speed trading on-chain, and traders bring their assets to dYdX over IBC.

4/ Osmosis @osmosiszone.→ $290M IBC volume.→ 549K IBC transfers.→ 5.1M total txs. The liquidity hub of Cosmos zones. Osmosis is a major player in IBC volume and transfer numbers, powering DeFi on Cosmos.

3/ Sei @SeiNetwork.→ $296M IBC volume.→ 11K transfers.→ 103M total txs. It's the power of parallel EVM and IBC.