Add an Identifier Type

The cited corpus in resources/stdnum/vectors.edn drives every shipped identifier type.

Each corpus entry has this shape:

:iban {:valid ["GB82WEST12345698765432"]
       :invalid ["GB82WEST12345698765433"]
       :source "ISO 13616 worked example"}

:source is mandatory. It names the standard, registry, government page, issuer publication, or live service that makes the vector re-checkable.

Process

1. Find a real published number from an authoritative source.
2. Add a resources/stdnum/vectors.edn entry with :valid, :invalid, and mandatory :source.
3. Register the validator in stdnum.core.
4. Run the suite.

For EU VAT values that are companies with a confirmed live registration, add :vies true. The integration test checks those again against the live VIES service.

Conditions to publish

Do not publish a validator that rejects valid real-world numbers.

Do not publish ambiguous formats or formats that you cannot verify. Wait until a confirmed real vector from an authoritative source exists. The corpus sets what the validator can claim.

stdnum-clj follows the same basic idea as python-stdnum: standard numbers are small APIs, but their correctness depends on published examples and testable rules.