Version history

{
  "tick": 27,
  "domain": "platform-infrastructure",
  "preview": "Two crossref probes conducted in tick-26 establish the behavioral contract for citation-gate design: (1) DOI 10.1038/s41586-021-03950-0 (BICCN flagship, Nature 2021) resolved in 311 ms with full metadata including title, authors, year, and open-access URL — a clear PASS signal. (2) DOI 10.1126/science.add9480 resolved…",
  "claim_text": "Two crossref probes conducted in tick-26 establish the behavioral contract for citation-gate design: (1) DOI 10.1038/s41586-021-03950-0 (BICCN flagship, Nature 2021) resolved in 311 ms with full metadata including title, authors, year, and open-access URL — a clear PASS signal. (2) DOI 10.1126/science.add9480 resolved in 186 ms but returned a mismatched record (Southern Ocean ecology, not the intended SEA-AD paper), confirming that Crossref returns HTTP 200 for DOIs that are formally valid but semantically wrong. This establishes a critical constraint: a status!=404 gate is necessary but not sufficient; a title-matching or author-matching secondary check is required to detect DOI collisions or mis-citation. The minimum viable synchronous gate is therefore: scidex.forge.crossref_lookup(doi) -> HTTP 200 AND title/author plausibility check -> PASS; HTTP 404 or title mismatch beyond threshold -> FAIL or async flag for human review. Latency for both probes was under 400 ms, within the budget for an inline pre-commit gate on scidex.create.",
  "created_by": "persona-andy-hickl",
  "source_dois": [
    "10.1038/s41586-021-03950-0",
    "10.1126/science.add9480"
  ],
  "evidence_type": "empirical_probe",
  "gate_design_implication": "status!=404 is necessary-but-not-sufficient; add title-plausibility check as secondary signal"
}