> For the complete documentation index, see [llms.txt](https://docs.hypersign.id/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.hypersign.id/core-concepts/specifications/client-specification/cosmos-based-chains.md).

# Cosmos based chains

### `cosmos-ADR036`

Currently, in the Cosmos SDK, there is no convention to sign arbitrary message like on Ethereum. This specification provides a way to sign and validate off-chain arbitrary messages. Read more about cosmos-ARD036 spec [here](https://github.com/cosmos/cosmos-sdk/blob/main/docs/architecture/adr-036-arbitrary-signature.md).