Unresolvable Identifier

arXiv:2605.08368 · detector doi_compliance · cross_source · 2026-05-19 11:11:24.136546+00:00

critical doi_compliance unresolvable_identifier

Identifier '10.1038/s41586-025-09422-z(2025' 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

Guo, D.et al.DeepSeek-R1 incentivizes reasoning in LLMs through reinforcement learning.Nature645,633–638. ISSN: 1476-4687.http://dx.doi.org/10.1038/s41586-025-09422-z(2025)

Evidence payload

{
  "arxiv_id": null,
  "checked_sources": [
    "crossref_by_doi",
    "openalex_by_doi",
    "doi_org_head"
  ],
  "doi": "10.1038/s41586-025-09422-z(2025",
  "raw_excerpt": "Guo, D.et al.DeepSeek-R1 incentivizes reasoning in LLMs through reinforcement learning.Nature645,633\u2013638. ISSN: 1476-4687.http://dx.doi.org/10.1038/s41586-025-09422-z(2025)",
  "ref_index": 19,
  "verdict_class": "cross_source"
}