---
title: "Attest a client-held copy: {artifact, sha3_256, snapshot?}"
method: POST
path: "/v1/verify"
---

# Attest a client-held copy: {artifact, sha3_256, snapshot?}

`POST /v1/verify`

## Request

- Base URL: `https://api.verisgov.com`
- URL: `https://api.verisgov.com/v1/verify`
- Auth: none required

## Query parameters

- `snapshot` string

## Response `200`

envelope-wrapped response (data + tier + snapshot + _provenance + _meta)

## Other responses

- `401`: missing/invalid credential
- `403`: out of entitlement; error.hint.required names the scope to purchase
- `404`: not found
- `422`: invalid input
- `429`: rate limited; Retry-After header set

---

[API](https://skmtc.dev/verisgov/apis/verisgov-data-access-api.md) · [All operations](https://skmtc.dev/verisgov/apis/verisgov-data-access-api/llms.txt) · [OpenAPI document](https://skmtc.dev/verisgov/apis/verisgov-data-access-api/revisions/dd3c694e1b79?raw)