registry_ids · Identity and registry

Meaning

Cross-registry identifiers attached to the canonical trial, shaped as objects with registry, id, and hard or soft match method.

Export shape

{
  "registry_ids": "[{\"registry\":\"clinicaltrials-gov\",\"id\":\"NCT04280705\",\"match\":\"hard\"}]",
  "_provenance": {
    "registry_ids": {
      "source": "clinicaltrials-gov",
      "source_url": "https://clinicaltrials.gov",
      "effective": true
    }
  }
}

Provenance

Field provenance follows the dataset contract: values are source-qualified, and records not cleared for the paid release stay out of commercial snapshot/API responses. Each release probes a bounded sample of this field's advertised evidence links; the check outcome is shown here, and a link that did not resolve renders as UNVERIFIED rather than as resolved.

Related docs

• Full data dictionary
• Provenance model
• Coverage notes
• REST API reference