# `testing.ManifestFromGlbOptions.stampedAt`

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

Property of [`testing.ManifestFromGlbOptions`](testing.ManifestFromGlbOptions.md) · labs, `@experimental` · since 2.0.0

```ts
stampedAt?: string;
```

`provenance.stampedAt` of an unstamped GLB's manifest, ISO 8601.

**Default:** the time of the call

## Generic-API test (spec 3.1)

| Rule | Result |
| --- | --- |
| 1. Neutral name | pass: `stampedAt` names no product |
| 2. A precedent | not recorded: no ledger row (coverage.json) names this member or its owner |
| 3. Two apps, or labs | labs (`@experimental` at a stable path, reached through `has()` or `supports()`): it graduates when a second app uses it |
| 4. The cheaper fix first | not recorded per member (Appendix B decides it per need) |