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URPX v0.5.0 Release Notes

Released: 2026-09-08.
Type: Pre-draft minor release.
Previous release: v0.4.0

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Overview

URPX v0.5.0 moves the vocabulary to its permanent namespace at urpx.org. The terms, the shapes and the semantics are unchanged from v0.4.0. This release changes identifiers only.

The ontology namespace moves from https://urpx-org.github.io/urpx/ontology/ to https://urpx.org/ns/ontology/, and the shapes namespace moves to https://urpx.org/ns/shacl/core/. Every term keeps its local name and changes only its host and path.

This release is not backward-compatible with v0.4.0 at the identifier level. Data or tooling that binds the previous namespace resolves no term until it rebinds.

What changed

  • The ontology base IRI is https://urpx.org/ns/ontology/.
  • The shapes base IRI is https://urpx.org/ns/shacl/core/.
  • The ontology and the shapes identify themselves as version 0.5.0. owl:versionIRI, dcterms:hasVersion, the release node, its distribution and both download URLs name v0.5.0. The ontology states the version literal on owl:versionInfo and the shapes file states it on dcat:version.
  • No term is added, removed or redefined. The vocabulary is identical to v0.4.0 apart from the namespace and the version metadata.

Breaking Changes

  1. The vocabulary namespace changes host and path.
    A document that binds urpx to https://urpx-org.github.io/urpx/ontology/ resolves no term after this release. Rebind it to https://urpx.org/ns/ontology/.

  2. The shapes namespace changes likewise.
    Rebind urpx-shacl to https://urpx.org/ns/shacl/core/.

Migration

  • Rebind the urpx prefix to https://urpx.org/ns/ontology/, and, where it is used, rebind urpx-shacl to https://urpx.org/ns/shacl/core/.
  • Point targetURPXVersion at https://github.com/urpx-org/urpx/raw/v0.5.0/ontology/urpx-ontology.ttl.
  • The local names are unchanged, so no term is renamed. A rebind of the prefix is the whole of the migration.

Notes

  • The example data files under test-cases/ and the published JSON-LD context still reference the previous host. They move to the new namespace in a following release.

References

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