> 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/reference/index.md).

# Glossary

- [Attestations](https://docs.sign.global/reference/index/attestations.md)
- [Schema](https://docs.sign.global/reference/index/schema.md)
- [Schema Registry](https://docs.sign.global/reference/index/schema-registry.md)
- [Attestation Repository](https://docs.sign.global/reference/index/attestation-repository.md)