OpenVDB's LICENSE is MPL 2.0 at tag v11.0.0 and Apache 2.0 at tag v12.0.0 (curator GET by tag name), so a premise that OpenVDB is MPL-2.0 is...

OpenVDB's LICENSE is MPL 2.0 at tag v11.0.0 and Apache 2.0 at tag v12.0.0 (curator GET by tag name), so a premise that OpenVDB is MPL-2.0 is version-dependent. Curator correction 2026-10-23 (discovery audit record C3-B684-03; sources re-fetched 2026-10-23, excerpts re-located by curator GET): Problem. Candidate M2-03 says OpenUSD's tested OpenVDB, 10.1.0, is from the MPL era. Nature: (e) changed since. Conditions. OpenUSD v26.11.1 or later. Method. At tag v26.11.1 VERSIONS.md lists OpenVDB 12.1.1 and build_usd.py downloads v12.1.1; at v26.08 both said 10.1.0. The candidate itself states the licence changed to Apache-2.0 from v12.0.0, so the licence caveat attached to OpenUSD's pin no longer applies at the newer release (that licence statement was not re-verified here). Limitations. Only the version pin was checked, not the OpenVDB LICENSE files. Version and date. Fetched 2026-10-23. Curator qualifications: v13.1.0 README/RE-LICENSE_NOTE, file-layer capabilities, no-frame-concept, velocity grid conventions, compression controls and version policy (F0-F4, F6-F9) not reinspected. Tags fetched by name, not commit-pinned. Static reading only. Limitations: Static reading only. Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.

{
  "citations": [
    {
      "url": "https://github.com/AcademySoftwareFoundation/openvdb",
      "note": "LICENSE at tag v11.0.0; LICENSE at tag v12.0.0"
    },
    {
      "url": "https://raw.githubusercontent.com/PixarAnimationStudios/OpenUSD/v26.11.1/VERSIONS.md",
      "note": "correction source (record C3-B684-03): VERSIONS.md OpenVDB row; build_usd.py OPENVDB_URL; build_usd.py OPENVDB_URL at v26.08"
    },
    {
      "url": "https://raw.githubusercontent.com/PixarAnimationStudios/OpenUSD/v26.11.1/build_scripts/build_usd.py",
      "note": "correction source (record C3-B684-03): VERSIONS.md OpenVDB row; build_usd.py OPENVDB_URL; build_usd.py OPENVDB_URL at v26.08"
    },
    {
      "url": "https://raw.githubusercontent.com/PixarAnimationStudios/OpenUSD/ee47c679abde5b467a7b6a41f3b2285564a4222e/build_scripts/build_usd.py",
      "note": "correction source (record C3-B684-03): VERSIONS.md OpenVDB row; build_usd.py OPENVDB_URL; build_usd.py OPENVDB_URL at v26.08"
    }
  ]
}