> ## Documentation Index
> Fetch the complete documentation index at: https://docs.algovoi.co.uk/llms.txt
> Use this file to discover all available pages before exploring further.

# .epi Evidence Export

> Export Records Vault evidence as a portable, post quantum sealed .epi artifact an auditor verifies offline with a bundled verifier, no AlgoVoi account.

<Note>
  **Also in the on-prem suite.** This product is included in the [AlgoVoi Compliance and Payments On-Prem Suite](/substrate-2), one commercial licence that unlocks and runs the complete self-hosted platform.
</Note>

Regulated evidence rarely stays in one place. An auditor asks for it. A regulator requests it.
Opposing counsel demands it. The hard part isn't *sending* the evidence — it's letting the recipient
**trust it without trusting you, or AlgoVoi.**

The **.epi Evidence Export** add-on turns a Records Vault evidence set into a portable, self-verifying
**`.epi`** artifact — the AlgoVoi post-quantum profile of the `.epi` portable-compliance-evidence
format — that anyone you hand it to can check on their own.

<Note>
  An **add-on** to [Records Vault](/records-vault). It exports the evidence Records Vault already
  preserves; it adds no new system of record.
</Note>

## Portable, verifiable anywhere

Export an evidence set as a single `.epi` artifact and send it. There's nothing to install on your
side beyond Records Vault, and nothing for the recipient to connect to — the artifact carries
everything needed to verify it.

## Verify-it-yourself — on the recipient's side

The export bundles a **redistributable verifier**. The recipient runs it against the `.epi` artifact
and gets a clear pass/fail, **offline**:

* **No AlgoVoi software, service, account, or network** is involved in their verification.
* The verifier's entire trust base is two public, audited-primitive libraries — it re-derives the
  signatures and hashes itself, from the public key carried in the artifact.
* Change a single byte of the evidence and verification fails.

You may pass that verifier to your auditors, regulators, or counterparty alongside the `.epi` files
they need to check (see the verifier's licence for redistribution terms).

## Built to outlast the keys that signed it

Health and legal records are retained for decades — well past the safe lifetime of classical
signatures. `.epi` artifacts are **Falcon-1024 (post-quantum)** signed, so evidence you export today
stays verifiable through the migration to post-quantum cryptography, not just for the next few years.

## How it fits

|                 |                                                                                                                     |
| --------------- | ------------------------------------------------------------------------------------------------------------------- |
| **Base**        | [Records Vault](/records-vault) — preserves your records as tamper-evident, offline-verifiable evidence             |
| **This add-on** | exports that evidence as a portable `.epi` artifact a third party verifies independently                            |
| **Custody**     | composes with [Bring Your Own Keys](/bring-your-own-keys) — your signing key can stay in your own HSM / KMS / Vault |

## Availability

An **add-on** to Records Vault, available from the [suite store](https://api.algovoi.co.uk/suite-store)
(`AV-EPI` — requires a Records Vault licence). One licence token installs the export engine; the
redistributable verifier ships inside it.

## See also

* [Records Vault](/records-vault) — the base product this exports from
* [Bring Your Own Keys](/bring-your-own-keys) — keep the signing key in your own estate