> For the complete documentation index, see [llms.txt](https://docs.sign.global/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.sign.global/for-builders/advanced-topics/zk-attestations.md).

# ZK Attestations

Steps to integrate ZK verifiers into Sign Protocol's Schema Hooks.

This tutorial will guide you in integrating a ZK Solidity verifier into a Sign Protocol [Schema Hook](/for-builders/advanced-topics/schema-hooks.md). This tutorial assumes you already know ZK basics and terminology, such as circuit, proof, and verifier. When you are ready to begin, continue to the next page.