---
title: "Address Proof"
method: POST
path: "/intake/proof"
tags: ["intake"]
---

# Address Proof

`POST /intake/proof`

## Request

- Base URL: `https://api.seal.net` (the document declares no server; this is the origin it was published from)
- URL: `https://api.seal.net/intake/proof`
- Auth: none declared

## Request body

- ProofRequest
  - `address` string, required: The address to prove, 43 base64url characters.

## Response `200`

Successful Response

- ProofChallenge
  - `address` string, required
  - `ts` integer, required: Decimal Unix second the challenge was made at.
  - `challenge` string, required: The server's HMAC of the address and `ts`, 43 characters, for the identity key to sign (seal_address.json proof); for the old address of a migration, a token sealed to its X25519 key.
  - `expires_at` string, date-time, required

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/seal/apis/seal-api.md) · [All operations](https://skmtc.dev/seal/apis/seal-api/llms.txt) · [OpenAPI document](https://skmtc.dev/seal/apis/seal-api/revisions/68460cfa1957?raw)