Changelog

All notable changes to this project are documented here. The format follows Keep a Changelog, and the project adheres to Semantic Versioning.

0.5.0 - 2026-06-24

Coverage expansion: 40 -> 54 identifier types, spanning ~24 countries. Every checksum clean-room from the public standard and verified against published example numbers.

Added

• More VAT/GST: :gr-vat :lu-vat :si-vat :ee-vat :hu-vat :in-gstin (India GST, base-36 check char).
• More tax & national IDs: :pt-nif :cz-ico :jp-cn :au-tfn :hr-oib (Croatia OIB), :it-cf (Italy codice fiscale, mod-26 check letter), :ch-uid :ch-ahv (Switzerland).

0.4.0 - 2026-06-23

Big coverage expansion: 13 -> 40 identifier types. Every new checksum is clean-room from the public standard and verified against published example numbers (no third-party port; stays EPL).

Added

• VAT numbers, country prefix optional on input: :de-vat :fr-vat :it-vat :be-vat :pl-vat :gb-vat :at-vat :dk-vat :fi-vat :se-vat.
• National IDs: :gb-nino, :ca-sin, :au-abn, :in-pan, :in-aadhaar, :es-dni, :es-nie, :nl-bsn, :cn-ric, :se-pnr, :za-id, :no-org, :tr-tc.
• Banking: :mx-clabe (Mexico CLABE bank account).

Changed

• README: trimmed Usage to the core API and grouped the identifier types by category in a collapsible block, so the page stays scannable as the set grows.

0.3.0 - 2026-06-23

Added

• Securities identifiers (engine-backed check digits): :cusip (US/Canada), :sedol (UK/Ireland) - rounding out the :isin/:lei set.
• US national numbers, clean-room from the public structural rules: :us-ssn (area/group/serial rules + the SSA's reserved advertising numbers, with format) and :us-ein (IRS campus prefix validation, with format).

0.2.0 - 2026-06-23

Added

• Three new identifier types, implemented clean-room from their public standards (no third-party port; stays EPL):
  • :lei - Legal Entity Identifier (ISO 17442, ISO 7064 mod-97-10).
  • :br-cpf - Brazil individual taxpayer registry, with format.
  • :br-cnpj - Brazil company registry, with format.
• compact/format now also strip / (used by the CNPJ written form).

Country-specific identifiers are keyed by an ISO-3166 prefix (e.g. :br-cpf).

0.1.0 - 2026-06-23

Initial release.

Added

• stdnum.core - a unified facade for validating, parsing, and formatting standard identifier numbers, dispatched on a type keyword:
  • valid?, parse, format, compact, detect, card-network, and the types set.
  • Identifier types: :credit-card (with network detection), :iban, :bic, :isbn, :issn, :isin, :aba (US bank routing), :imei, :luhn.
• Idiomatic facade over Apache Commons Validator 1.10.1 and iban4j 3.2.11 - no algorithm reimplementation. Bad input data never throws; only an unknown identifier type does.