> For the complete documentation index, see [llms.txt](https://apidocs.onekeypayments.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://apidocs.onekeypayments.com/api-reference/cashouts-api/validate-bank-accounts.md).

# Validate bank accounts

- [Security aspects](https://apidocs.onekeypayments.com/api-reference/cashouts-api/validate-bank-accounts/security-aspects.md)
- [Calculating the Signature](https://apidocs.onekeypayments.com/api-reference/cashouts-api/validate-bank-accounts/security-aspects/calculating-the-signature.md): Learn how to calculate and send the Signature header value to verify requests integrity
- [Bank account validator](https://apidocs.onekeypayments.com/api-reference/cashouts-api/validate-bank-accounts/bank-account-validator.md)
- [Pix keys validator](https://apidocs.onekeypayments.com/api-reference/cashouts-api/validate-bank-accounts/pix-keys-validator.md)
- [API Codes](https://apidocs.onekeypayments.com/api-reference/cashouts-api/validate-bank-accounts/api-codes.md)