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SPDX 3.1 Ontology and Schema Available for Review

By January 26, 2026No Comments

The first release candidate for SPDX specification version 3.1 is now available.

The SPDX 3.1 model expands beyond software to include safety, service, hardware, supply chain, and operations.

Please note that this release candidate is intended for testing and validation.

Some features may be modified or reverted before the final stable release.

SPDX specification v3.1-RC1

https://spdx.github.io/spdx-spec/v3.1-RC1/

Model changelog & deprecation info

https://github.com/spdx/spdx-3-model/blob/develop/CHANGELOG.md

Note that the official URLs for the ontology and the schema at

https://spdx.org are not available yet for SPDX 3.1-RC1.

In the meantime, for testing and validation purposes, these resources

can be used instead:

OWL ontology

https://spdx.github.io/spdx-spec/3.1-RC1/rdf/spdx-model.ttl

JSON-LD context file

https://spdx.github.io/spdx-spec/3.1-RC1/rdf/spdx-context.jsonld

JSON Schema

https://spdx.github.io/spdx-spec/3.1-RC1/rdf/schema.json

We would like to thank all the contributors who made this 3.1-RC1 possible.

Detailed changes, including the list of contributors, can be found in the respective release notes here:

SPDX spec repository:

https://github.com/spdx/spdx-spec/releases/tag/v3.1-RC1

SPDX 3 model repository:

https://github.com/spdx/spdx-3-model/releases/tag/3.1-rc1

If you encounter any issues or have questions, please submit an issue to the relevant GitHub repository.