> For the complete documentation index, see [llms.txt](https://docs.fetcch.xyz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.fetcch.xyz/how-to-integrate/guides/utility.md).

# Utility

- [How to sign messages?](https://docs.fetcch.xyz/how-to-integrate/guides/utility/how-to-sign-messages.md)
- [EVM](https://docs.fetcch.xyz/how-to-integrate/guides/utility/how-to-sign-messages/evm.md)
- [Solana](https://docs.fetcch.xyz/how-to-integrate/guides/utility/how-to-sign-messages/solana.md)
- [Aptos](https://docs.fetcch.xyz/how-to-integrate/guides/utility/how-to-sign-messages/aptos.md)
- [EIP-6492 Compatible Signatures](https://docs.fetcch.xyz/how-to-integrate/guides/utility/how-to-sign-messages/eip-6492-compatible-signatures.md): Fetcch supports EIP-6492 for pre-deployed smart accounts
- [How to generate & verify proofs for identity?](https://docs.fetcch.xyz/how-to-integrate/guides/utility/how-to-generate-and-verify-proofs-for-identity.md)