---
title: "Verify a cryptographic origin leaf"
method: GET
path: "/api/verify/{leaf_hash}"
---

# Verify a cryptographic origin leaf

`GET /api/verify/{leaf_hash}`

## Request

- Base URL: `https://origin.rootz.global`
- URL: `https://origin.rootz.global/api/verify/{leaf_hash}`
- Auth: none declared

Verify a SHA-256 origin leaf hash from any Origin API response. Returns a signed verification receipt with nonce for chain-of-custody tracking. Pass prev_nonce to build a verification chain across multiple lookups.

## Path parameters

- `leaf_hash` string, required

## Query parameters

- `prev_nonce` string

## Response `200`

Signed verification receipt

- object

## Other responses

- `400`: Invalid leaf hash format

---

[API](https://skmtc.dev/rootz/apis/origin-sec-registry-api.md) · [All operations](https://skmtc.dev/rootz/apis/origin-sec-registry-api/llms.txt) · [OpenAPI document](https://skmtc.dev/rootz/apis/origin-sec-registry-api/revisions/4fbc763c9866?raw)