The IBC protocol enables secure and reliable communication between independent blockchains in the Cosmos ecosystem. Build truly interoperable applications across multiple ecosystems, not just blockchains.

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Developers

Get started building with IBC:

IBC Protocol Specification

Technical specification and implementation details of the IBC protocol for developers. View Specification →

Cross-Chain Development

Build applications that leverage IBC for cross-chain functionality with practical guides. Start Building →

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IBC with Smart Contracts

Use IBC functionality directly from Solidity contracts on any chain using the Cosmos-EVM SDK module:

IBC Precompile Guide

Learn how to use IBC functionality directly from Solidity smart contracts with the IBC precompile module. Explore IBC Precompile →