> For the complete documentation index, see [llms.txt](https://docs.clique.tech/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.clique.tech/toolchain/clique-attestation-sdk/what-are-attestors.md).

# What are Attestors ?

Attestors are nodes that put data on-chain in the form of attestations or issue verifiable credentials off-chain. The nodes are modular and can perform various necessary tasks such as data signing, verification and more.