Unresolvable Identifier

arXiv:2604.19104 · detector doi_compliance · cross_source · 2026-05-20 03:17:34.390596+00:00

critical doi_compliance unresolvable_identifier

Identifier '10.1007/s11431-025-3253-2' is syntactically valid but the DOI registry (doi.org) returned 404, and Crossref / OpenAlex / internal corpus also have no record. The cited work could not be located through any authoritative source.

Paper page Integrity report arXiv Try DOI

Evidence text

L. Ye, B. Xing, B. Liang, et al., “Gewu Playground: an open-source robot simulation platform for embodied intelligence research,”Science China Technological Sciences, 2026, doi: 10.1007/s11431-025-3253-2

Evidence payload

{
  "arxiv_id": null,
  "checked_sources": [
    "crossref_by_doi",
    "openalex_by_doi",
    "doi_org_head"
  ],
  "doi": "10.1007/s11431-025-3253-2",
  "raw_excerpt": "L. Ye, B. Xing, B. Liang, et al., \u201cGewu Playground: an open-source robot simulation platform for embodied intelligence research,\u201dScience China Technological Sciences, 2026, doi: 10.1007/s11431-025-3253-2",
  "ref_index": 20,
  "verdict_class": "cross_source"
}