# Metadata Schema

- [Startrail Registry (SRR)](/metadata-schema/startrail-registry-srr.md)
- [Version 2.2](/metadata-schema/startrail-registry-srr/version-2.2.md)
- [Version 2.1](/metadata-schema/startrail-registry-srr/version-2.1.md)
- [Version 2.0](/metadata-schema/startrail-registry-srr/version-2.0.md)
- [Transfer](/metadata-schema/transfer.md)
- [Version 1.2](/metadata-schema/transfer/version-1.2.md)
- [Version 1.1](/metadata-schema/transfer/version-1.1.md)
- [Version 1.0](/metadata-schema/transfer/version-1.0.md)
- [Custom History](/metadata-schema/custom-history.md)
- [Custom History of Exhibition](/metadata-schema/custom-history/custom-history-of-exhibition.md)
- [Version 1.2](/metadata-schema/custom-history/custom-history-of-exhibition/version-1.2.md)
- [Custom History of Auction](/metadata-schema/custom-history/custom-history-of-auction.md)
- [Version 1.3](/metadata-schema/custom-history/custom-history-of-auction/version-1.3.md)
- [Custom History of Appraisal](/metadata-schema/custom-history/custom-history-of-appraisal.md)
- [Version 1.1](/metadata-schema/custom-history/custom-history-of-appraisal/version-1.1.md)
- [Custom History of Restoration](/metadata-schema/custom-history/custom-history-of-restoration.md)
- [Version 1.0](/metadata-schema/custom-history/custom-history-of-restoration/version-1.0.md)
- [Custom History of Offchain](/metadata-schema/custom-history/custom-history-of-offchain.md)
- [Version 1.1](/metadata-schema/custom-history/custom-history-of-offchain/version-1.1.md)