> For the complete documentation index, see [llms.txt](https://docs.vida.id/identity-stack/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.vida.id/identity-stack/sign/digital-signature/directsign-api/api-reference/choose-signer/signer-is-verified-by-vida.md).

# Signer is verified by VIDA

## Description

DirectSign API leverages `kyc_event_id` to determine who is the signer of the document, this identifier is produced from VIDA verification product suite, and will be used in DirectSign API.

## Verifying Signer with VIDA

Before hitting DirectSign API, the signer has to have a digital certificate issued by VIDA as a PSrE. Certificate is tied to `kyc_event_id` .

1. To get `kyc_event_id`, the client needs to use VIDA verification suite 
   1. Please refer to [Indonesia Verification](/identity-stack/verify/indonesia-verification.md) section for VIDA integration and integration-less KYC suite
2. After the client receives a `kyc_event_id` of the signer, continue to sign using [Create Envelope](/identity-stack/sign/digital-signature/directsign-api/api-reference/create-envelope.md)