> For the complete documentation index, see [llms.txt](https://docs.orbitchain.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.orbitchain.io/smart-contract-api.md).

# IBC PROCOTOCL GUIDE

- [Ethereum IBC protocol](https://docs.orbitchain.io/smart-contract-api/ethereum-ibc-contract-api.md)
- [Bitcoin IBC protocol](https://docs.orbitchain.io/smart-contract-api/bitcoin-ibc-contract-api.md)
- [Ripple IBC protocol](https://docs.orbitchain.io/smart-contract-api/ripple-contract-api.md)
- [API references](https://docs.orbitchain.io/smart-contract-api/api-references.md)
- [Network information](https://docs.orbitchain.io/smart-contract-api/api-references/testnet-info.md)
- [Chain APIs](https://docs.orbitchain.io/smart-contract-api/api-references/chain-apis.md)