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Validate a contract locally.
Download an exact reviewed version from a product profile, then check the metadata, declared JSON schemas and immutable content digests here. This client supports 2026-10-05.catalog. Unknown schema dialects and unfrozen external references remain unsupported; legacy manifests keep their existing format.
Validation happens in this browser. The file is not uploaded. A downloaded copy can outlive access revocation; retrieve it again to check current publication and deprecation state.