---
title: "Fingerprints of all trusted FreeSign CAs"
method: GET
path: "/.well-known/free-sign-signing-cas.sha256.txt"
---

# Fingerprints of all trusted FreeSign CAs

`GET /.well-known/free-sign-signing-cas.sha256.txt`

## Request

- Base URL: `https://free-sign.com`
- URL: `https://free-sign.com/.well-known/free-sign-signing-cas.sha256.txt`
- Auth: none declared

Same list as /.well-known/free-sign-signing-cas.json: one lowercase hex SHA-256 per line, current CA first.

## Response `200`

One 64-character lowercase hex SHA-256 + newline per trusted CA.

## Other responses

- `404`: Signing CA cert is not configured on this deployment.

---

[API](https://skmtc.dev/free-sign/apis/freesign-free-e-signature-api.md) · [All operations](https://skmtc.dev/free-sign/apis/freesign-free-e-signature-api/llms.txt) · [OpenAPI document](https://skmtc.dev/free-sign/apis/freesign-free-e-signature-api/revisions/5d8e9854ab85?raw)