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IBC Eureka: Fast, Cheap, and Seamless Interoperability between Cosmos and Ethereum

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What is IBC Eureka?

IBC Eureka is the canonical implementation of IBC v2 that enables seamless interoperability between Cosmos and Ethereum ecosystem. As a subset of the proven Inter-Blockchain Communication (IBC) protocol, Eureka extends the reach of 115+ Cosmos chains to Ethereum (Q1 2025) with support for Layer 2 networks such as Base and Arbitrum or Solana to be added soon.

Connect Your Chain

Connect your Cosmos chain to Ethereum and other EVM chains with minimal cost and battle-tested security.

Instant Compatibility

If your chain already uses IBC, is connected to the Cosmos Hub and has been onboarded to the Skip API, you can immediately connect to Ethereum through Eureka with no new dependencies.

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Integration Options

There are multiple ways to integrate with Eureka, depending on your requirements:

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1. Chain-to-Eureka Integration

If you’re running a Cosmos-based blockchain, you can connect directly to Eureka through the Cosmos Hub:

  • Requires an IBC connection to the Cosmos Hub and onboarding to the Skip API
  • No chain upgrade needed if you’re already using IBC
  • Enables your users to transfer assets to and from Ethereum

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2. Frontend-to-Eureka Integration

For application developers looking to enable cross-chain functionality in their applications:

  • Leverage the Skip Widget for a simplified integration
  • Integrate with 50+ wallets and frontends on day one
  • Enable seamless asset transfers without handling complex relayer infrastructure

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3. User-to-Eureka Use

For end-users who need to use the interoperability functionality of Eureka:

  • Implement the Skip Go widget in your application
  • Provide one-click experience for users to transfer assets
  • Access all IBC-connected chains and Ethereum from a single integration

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4. Frontend/Custodian-to-Eureka

For custodial applications and exchanges:

  • Implement direct API access to Eureka’s functionality
  • Enable high-volume, automated cross-chain operations

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Getting Started

To start using Eureka, you have several options:

1

Understand the Tech

Read the Technical Overview to see how Eureka works.

2

Explore the Devnet

Follow our Devnet Testing Guide to test Eureka’s functionality using our CLI tool.

3

Integrate with Skip Go

If you’re building a frontend application, consider using the Skip Go API for a simplified integration.

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Connect Your Chain

If you’re running a Cosmos chain, consider setting up an IBC connection to the Cosmos Hub and reach out to our team below for configuration assistance.

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Coming Soon

  • Testnet Launch: March, 2025
  • Ethereum Mainnet Integration: End of Q1 2025
  • Additional EVM Chain Support: Base, Arbitrum, and Optimism in Q2 2025

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Support and Resources

Need help with your Eureka integration? Our team is ready to assist:

For technical specifications, visit the IBC v2 Specification.

Swap Venue RequirementsTechnical Overview