timestamp-authority

Chart · Security & supply chain · standard · v0.0.3

digest pinnedcosign signedSPDX SBOMSLSA provenanceamd64 · arm64Rebuilt 2026-09-26

The Sigstore Timestamp Authority, an RFC 3161 timestamping server that countersigns artifact hashes, with file, KMS and Tink signers. Built from source; the default in-memory signer is for testing.

Version

0.0.3 · latest 0.0.2 0.0.1

The latest line lives at the base page; older lines have their own page so you can pin and verify exactly that version.

Deployed image digest

sha256:383b3ced033dc77c5ba806107f80a6fc454466a875864af5cf9d086c9eebef21

Chart OCI version

oci://ghcr.io/quenchworks/charts/timestamp-authority:0.0.3

The chart pins its image by this signed digest, so you never track it yourself. Signatures, SBOM, and provenance attach to the same digest.

Signed

cosign keyless

SBOM

SPDX, on image

Provenance

SLSA build

Architectures

amd64, arm64

Runs as

nonroot (uid 1001)

Root filesystem

read-only

Image size

11.9 MB

Security report (Trivy)

A· 98/1001 open · no upstream fix yet

Vulnerability detail

timestamp-authority 2.1.3 · 1 CVE

CVE	Severity	Package	Installed	Fixed in	Title
GO-2026-5932	UNKNOWN	golang.org/x/crypto	v0.56.0	— not fixable	The golang.org/x/crypto/openpgp package is unmaintained, unsafe by design, and has known security issues

Critical

High

Medium

Low

Unknown

Security report (Trivy) · image timestamp-authority 2.1.3

Install the chart

Deploy to Kubernetes with hardened defaults. The chart pins its image by signed digest, so you never track it yourself.

Install (latest)

helm install my-timestamp-authority oci://ghcr.io/quenchworks/charts/timestamp-authority --version 0.0.3

Deploys image (digest-pinned)

ghcr.io/quenchworks/images/timestamp-authority@sha256:383b3ced033dc77c5ba806107f80a6fc454466a875864af5cf9d086c9eebef21

Chart version: 0.0.3
App version: 2.1.3
Chart license: Apache-2.0
App license: Apache-2.0
Service port: 3000
Signed: cosign (keyless)
Values schema: yes
Last published: 2026-09-27

Verify the chart

cosign verify ghcr.io/quenchworks/charts/timestamp-authority:0.0.3 \
  --certificate-identity-regexp 'https://github.com/quenchworks/.+' \
  --certificate-oidc-issuer https://token.actions.githubusercontent.com

Transparency

The chart publishes its attestations on GitHub and the image it deploys carries its own on the same digest, publicly verifiable with the commands above. Both log to the Sigstore transparency log (Rekor), which cosign verify checks for you.

View the image View on ArtifactHub Chart source

Upstream project: https://github.com/sigstore/timestamp-authority