---
title: "Store an OpenTimestamps proof for a digest (keyed)"
method: POST
path: "/anchors"
---

# Store an OpenTimestamps proof for a digest (keyed)

`POST /anchors`

## Request

- Base URL: `https://api.whitemagic.dev`
- URL: `https://api.whitemagic.dev/anchors`
- Auth: one of:
  - HTTP bearer
  - API key in header `X-WM-Key`
  - API key in header `X-PAYMENT`

## Request body

- object
  - `digest` string, required
  - `proof` string, required
  - `note` string

## Response `200`

stored

- object
  - `stored` unknown
  - `digest` string
  - `status` string

## Other responses

- `400`: invalid JSON or shape
- `401`: missing or invalid key
- `429`: Daily cap reached (Retry-After: 86400; X-RateLimit-* report the bucket)

---

[API](https://skmtc.dev/whitemagic/apis/whitemagic-receipt-verification-api.md) · [All operations](https://skmtc.dev/whitemagic/apis/whitemagic-receipt-verification-api/llms.txt) · [OpenAPI document](https://skmtc.dev/whitemagic/apis/whitemagic-receipt-verification-api/revisions/92a4341eb473?raw)