# `AssetManifest.provenance`

> Contract 2.0.0 · package sha256 `a857eca95b35921109faf997094bb4192f12527d9d0fcd4be7e97f06425bad6e` · generated from `configurator-runtime.d.ts` by `services/onsite-scripter/scripts/build-contract-docs.mjs`; edit the source, not this file.

Property of [`AssetManifest`](AssetManifest.md) · stable · since 2.0.0

```ts
readonly provenance: {
  readonly sha256: string;
  readonly stampedBy: 'upload' | 'asset-library' | 'backfill' | 'optimizer' | 'recompress' | 'plugin' | 'other';
  readonly stampedAt: string;
  readonly ticket?: string;
};
```

Who stamped the file, and when.

## Fields

<a id="sha256"></a>
### `sha256`

```ts
readonly sha256: string;
```

SHA-256, 64 lowercase hex characters, of the unencrypted GLB (a `.holo` file's decrypted
GLB) with these 64 characters read as ASCII `0`: the stamper writes `0`s, hashes the file,
then writes the digest in place (spec section 7.4). Also [`AssetInfo.version`](AssetInfo.version.md).

<a id="stampedby"></a>
### `stampedBy`

```ts
readonly stampedBy: 'upload' | 'asset-library' | 'backfill' | 'optimizer' | 'recompress' | 'plugin' | 'other';
```

The stamping point; 'optimizer' and 'recompress' re-stamp a derived file (spec section 7.3).

<a id="stampedat"></a>
### `stampedAt`

```ts
readonly stampedAt: string;
```

ISO 8601 time.

<a id="ticket"></a>
### `ticket`

```ts
readonly ticket?: string;
```

The Model Board ticket, e.g. 'HS-123', when one exists.

## Generic-API test (spec 3.1)

| Rule | Result |
| --- | --- |
| 1. Neutral name | pass: `provenance` names no product |
| 2. A precedent | not recorded: no ledger row (coverage.json) names this member or its owner |
| 3. Two apps, or labs | not recorded: no ledger row names this member or its owner |
| 4. The cheaper fix first | not recorded per member (Appendix B decides it per need) |