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docs: clarify <tag> in attestation verify command (UID2-6764) #2540

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BehnamMozafari merged 1 commit into from
May 13, 2026
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docs: clarify <tag> in attestation verify command (UID2-6764) #2540

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13 changes: 9 additions & 4 deletions README.md
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Expand Up @@ -74,12 +74,17 @@ Every non-snapshot image published by this repo's release workflow ships with a
To verify an image, install [`gh`](https://cli.github.com/) (≥ 2.49) and run:

```bash
gh attestation verify \
oci://ghcr.io/iabtechlab/uid2-operator:<tag> \
--owner IABTechLab \
--signer-repo IABTechLab/uid2-shared-actions
gh attestation verify oci://ghcr.io/iabtechlab/uid2-operator:<tag> --owner IABTechLab --signer-repo IABTechLab/uid2-shared-actions
```

`<tag>` refers to the **Docker image tag** — bare semantic version, no `v` prefix (e.g. `5.70.84`). Note that the corresponding GitHub release and git tag for the same build are named with a `v` (e.g. `v5.70.84`); the registry tag drops it by OCI convention.

**Where to find a tag:**

- **GitHub Packages** for this repo — [`uid2-operator` package](https://github.com/IABTechLab/uid2-operator/pkgs/container/uid2-operator) lists every published image tag and its digest.
- Or take a [release](https://github.com/IABTechLab/uid2-operator/releases) name (e.g. `v5.70.84`) and drop the leading `v`.
- To pin to an exact manifest instead of a mutable tag, use the digest form: `oci://ghcr.io/iabtechlab/uid2-operator@sha256:<digest>` (visible on the Packages page, or via `gh api /orgs/IABTechLab/packages/container/uid2-operator/versions`).

A successful run prints `✓ Verification succeeded!` followed by the SLSA provenance fields — including `sourceRepositoryDigest` (the source commit), `workflow.path` (the signing workflow), and the runner identity.

Snapshot tags (`-SNAPSHOT` suffix) deliberately skip attestation. `gh attestation verify` returns `no attestations found` against a snapshot — that's expected.
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