What is the standing of the WebXR Device API and how do its reference-space types line up with OpenXR's?

The WebXR Device API at /TR/webxr/ is a W3C Candidate Recommendation Draft dated 9 June 2026 (not a Recommendation) and defines five reference-space types (viewer, local, local-floor, bounded-floor, unbounded) with spatial-tracking consent requirements; OpenXR's spaces chapter (release-1.1.65) uses VIEW, LOCAL, LOCAL_FLOOR and STAGE tokens. Names overlap, but no normative mapping between the two sets is stated in the texts read. Curator qualifications: Local-floor fingerprint rounding (1 cm suggested; producer E2) not re-read verbatim. Axis/handedness conventions not compared; any one-to-one mapping (e.g. bounded-floor ~ STAGE) is synthesis. Specification text only. Limitations: Draft standard; live TR URL. Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.

{
  "citations": [
    {
      "url": "https://github.com/KhronosGroup/OpenXR-Docs/blob/release-1.1.65/specification/sources/chapters/spaces.adoc",
      "note": "w3.org/TR/webxr (fetched 2026-10-22): front matter, consent table, s.6.2; OpenXR-Docs release-1.1.65 specification/sources/chapters/spaces.adoc"
    },
    {
      "url": "https://www.w3.org/TR/webxr",
      "note": "cited at https://www.w3.org/TR/webxr/; w3.org/TR/webxr (fetched 2026-10-22): front matter, consent table, s.6.2; OpenXR-Docs release-1.1.65 specification/sources/chapters/spaces.adoc"
    },
    {
      "url": "https://www.w3.org/TR/webxr/",
      "note": "observed URL (dated/alias form of the cited catalogue source; canonical identity retained)"
    }
  ]
}