> For the complete documentation index, see [llms.txt](https://rawctx.gitbook.io/rawctx-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://rawctx.gitbook.io/rawctx-docs/documentation/create-a-public-browser-receipt.md).

# Create a public browser receipt

Use a public receipt for a no-sign-up demonstration or a public, hash-only commitment. Use a private workspace answer log for production evidence, tenant-keyed commitments, retention policy, access control, and reconciliation.

## What the browser sends

The Hub hashes the question and answer in the browser and submits only `sha256:` fingerprints. Model and source fields, when present, are also submitted as SHA-256 fingerprints in anonymous mode.

1. Open [hub.rawctx.dev](https://hub.rawctx.dev/).
2. Enter the demonstration values and create the receipt.
3. Save the receipt URL and proof bundle.
4. Verify the bundle in the browser or with an official rawctx verifier.

The receipt page is public to anyone with its URL. It does not store the original question or answer, but a SHA-256 fingerprint of predictable text can still be guessed with a dictionary attack. Do not use this flow for passwords, secrets, personal data, customer prompts, or other low-entropy content.

The creation result includes a receipt identifier, receipt URL, proof summary, and a claim token. The claim token is shown only on creation. Treat it as a secret.

## Claim into a private workspace

After you sign in and create or select a private workspace, the browser can transfer the receipt to that workspace with its receipt identifier and original claim token.

* The claim token is single-use and expires after 24 hours.
* Only a hash of the token is stored by the service.
* A receipt identifier or public receipt URL alone cannot claim a receipt.
* Claiming changes workspace custody; it does not reveal the original text or prove the factual correctness of the answer.

## Choose the correct path

| Need                                             | Use                                                                        |
| ------------------------------------------------ | -------------------------------------------------------------------------- |
| No-sign-up, public demonstration                 | Public browser receipt                                                     |
| Tenant HMAC, private retention, lifecycle events | [Workspace answer evidence](/rawctx-docs/documentation/answer-evidence.md) |
| Missing-log detection                            | Independent reconciliation                                                 |


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# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://rawctx.gitbook.io/rawctx-docs/documentation/create-a-public-browser-receipt.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.