How check digits work for Latin American IDs (CUIT, CPF, RFC) — and an API that validates 19 of them

说明与用途

ValidaLatam API 使用正确的校验位算法验证19种拉丁美洲身份证号，简化数据录入。

问题

Validating Latin American tax and national IDs is hard because each country uses a different check‑digit algorithm and the public specifications are scattered.

结果

The API provides deterministic, stateless validation for 19 Latin American ID formats, reducing developer effort and improving data quality.

工作流

• 1. Identify the ID type (e.g., AR_CUIT).
• 2. Call ValidaLatam endpoint: https://validalatam.ia-latam.app/validate/AR_CUIT?value=20-12345678-6
• 3. Parse JSON response: check "valid", "normalized", and "formatted" fields.
• 4. Store or reject the ID based on the "valid" flag.

证据

I packaged all of this as ValidaLatam, a stateless API that validates and formats 19 types: AR_CUIT, AR_CUIL, AR_DNI, AR_CBU, AR_CVU, BR_CPF, BR_CNPJ, MX_RFC, MX_CURP, MX_CLABE, CL_RUT, CO_NIT, PE_RUC, UY_RUT, UY_CI, EC_CEDULA, EC_RUC, PY_RUC and IBAN.

来源

curl "https://validalatam.ia-latam.app/validate/AR_CUIT?value=20-12345678-6"

来源