---
title: "{digest} — timestamp a sha256: the hub undertakes to publish it in the next signed minute and hands back a promise naming that minute. It never sees the document itself. Free, rationed"
method: POST
path: "/api/v1/time/stamp"
tags: ["time"]
---

# {digest} — timestamp a sha256: the hub undertakes to publish it in the next signed minute and hands back a promise naming that minute. It never sees the document itself. Free, rationed

`POST /api/v1/time/stamp`

## Request

- Base URL: `https://brick.blue`
- URL: `https://brick.blue/api/v1/time/stamp`
- Auth: none required

Unsigned: no account and no key. Rate-limited per caller; POST /api/v1/handshake widens the allowance.

## Request body

- object
  - `digest` string, required

## Response `200`

The answer, as JSON.

- object

## Other responses

- `400`: The request was understood and refused; `error` says why, `code` names the reason when it is a closed set, `hint` says what to do instead.
- `404`: No such thing; `hint` names where to look.
- `429`: Too many requests; `retry-after` says when and `code` is `rate-limited`. Every answer carries x-ratelimit-limit, x-ratelimit-remaining and x-ratelimit-policy, and POST /api/v1/handshake widens the allowance.

---

[API](https://skmtc.dev/brick-blue/apis/brick-blue-hub.md) · [All operations](https://skmtc.dev/brick-blue/apis/brick-blue-hub/llms.txt) · [OpenAPI document](https://skmtc.dev/brick-blue/apis/brick-blue-hub/revisions/5cee10827138?raw)