ORCID Validation in Python — Researcher Identifier Lookup

1. What is an ORCID?

ORCID stands for Open Researcher and Contributor ID. It is a persistent digital identifier that uniquely distinguishes individual researchers — solving the name ambiguity problem that plagues academic publishing. Two researchers named "J. Smith" at the same university are clearly distinguished by their ORCIDs.

ORCIDs are managed by the ORCID organisation, a non-profit launched in 2012. The registry now holds over 18 million identifiers and is integrated into the submission workflows of most major publishers, funders, and institutional systems worldwide.

ORCIDs are used by publishers (Elsevier, Springer Nature, Wiley), funding agencies (NIH, ERC, UKRI), institutional repositories, and preprint servers. Many journal submission systems now require an ORCID at manuscript submission time.

2. ORCID structure

An ORCID iD is a 16-digit number displayed in four groups of four, separated by hyphens. The final character is a check digit calculated using the ISO 7064 MOD 11-2 algorithm, which can be a digit (0-9) or the letter X (representing the value 10).

3. Why ORCID validation matters

ORCIDs are critical infrastructure for research identity management. Invalid or malformed ORCIDs cause real problems in production systems:

4. Basic validation vs profile lookup

The IsValid ORCID API offers two modes of validation. Basic validation checks the ORCID format, verifies the ISO 7064 check digit, and returns the formatted identifier with its URI. Profile lookup goes further and retrieves the researcher's public profile from the ORCID registry.

5. The right solution

The IsValid ORCID API handles format validation, check digit verification, formatting, and optional profile retrieval in a single call.

Full parameter reference and response schema: ORCID Validation API docs →

6. Python code example

from isvalid import create_client

iv = create_client(api_key=os.environ["ISVALID_API_KEY"])

# ── Basic validation ────────────────────────────────────────────────────────

result = iv.orcid("0000-0002-1825-0097")

print(result["valid"])     # True
print(result["formatted"]) # '0000-0002-1825-0097'
print(result["uri"])       # 'https://orcid.org/0000-0002-1825-0097'

# ── With profile lookup ─────────────────────────────────────────────────────

lookup = iv.orcid("0000-0002-1825-0097", lookup=True)

print(lookup["profile"]["givenNames"])   # 'Josiah'
print(lookup["profile"]["familyName"])   # 'Carberry'
print(lookup["profile"]["organization"]) # 'Brown University'

# Validate ORCIDs before importing researcher records
def import_researchers(rows: list[dict]) -> list[dict]:
    results = []

    for row in rows:
        if not row.get("orcid"):
            results.append({**row, "orcid_status": "missing"})
            continue

        check = iv.orcid(row["orcid"], lookup=True)

        if not check["valid"]:
            results.append({**row, "orcid_status": "invalid"})
            continue

        results.append({
            **row,
            "orcid": check["formatted"],
            "given_names": check.get("profile", {}).get("givenNames"),
            "family_name": check.get("profile", {}).get("familyName"),
            "organization": check.get("profile", {}).get("organization"),
            "orcid_status": "valid",
        })

    return results

7. cURL example

Basic ORCID validation:

curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://api.isvalid.dev/v0/orcid?value=0000-0002-1825-0097"

With profile lookup:

curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://api.isvalid.dev/v0/orcid?value=0000-0002-1825-0097&lookup=true"

ORCID without hyphens:

curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://api.isvalid.dev/v0/orcid?value=0000000218250097"

Invalid ORCID:

curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://api.isvalid.dev/v0/orcid?value=0000-0002-1825-0000"

8. Understanding the response

Basic validation (valid ORCID):

{
  "valid": true,
  "formatted": "0000-0002-1825-0097",
  "uri": "https://orcid.org/0000-0002-1825-0097"
}

With profile lookup:

{
  "valid": true,
  "formatted": "0000-0002-1825-0097",
  "uri": "https://orcid.org/0000-0002-1825-0097",
  "profile": {
    "found": true,
    "givenNames": "Josiah",
    "familyName": "Carberry",
    "organization": "Brown University"
  }
}

Invalid ORCID:

{
  "valid": false
}

9. Edge cases

# ORCID with check digit X
result = iv.orcid("0000-0002-1694-233X")
print(result["valid"])     # True
print(result["formatted"]) # '0000-0002-1694-233X'

import re

# Strip the ORCID URL prefix before validation
def extract_orcid(raw: str) -> str:
    return re.sub(r"^https?://orcid\.org/", "", raw, flags=re.IGNORECASE).strip()

orcid = extract_orcid("https://orcid.org/0000-0002-1825-0097")
result = iv.orcid(orcid)
print(result["valid"])  # True

10. Summary