# Smart Contract

- [EVM](/for-builders/index-1/index/index.md)
- [Interfaces](/for-builders/index-1/index/index/index.md)
- [ISP](/for-builders/index-1/index/index/index/isp.md): Version 1.0.0-beta18
- [ISPHook](/for-builders/index-1/index/index/index/isphook.md): The hook is called for every attestation or revocation if the schema used specifies a hook.
- [IVersionable](/for-builders/index-1/index/index/index/iversionable.md): This interface helps contracts to keep track of their versioning.
- [Data Models](/for-builders/index-1/index/index/index-1.md)
- [Schema](/for-builders/index-1/index/index/index-1/schema.md)
- [Attestation](/for-builders/index-1/index/index/index-1/attestation.md)
- [DataLocation](/for-builders/index-1/index/index/index-1/datalocation.md)