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Attestation Manifest Attestation manifests are attached to the root image index object, under a separate OCI image manifestopen_in_new. Each attestation manifest can contain multiple attestation blobs, with all the of the attestations in a manifest applying to a single platform manifest.

Attestation is the act of witnessing the signing of a formal document and then also signing it to verify that it was properly signed by those bound by its contents. Attestation is a legal acknowledgment of the authenticity of a document and a verification that proper processes were followed.

For example, --provenance=false can be used to disable all provenance attestations, while --provenance=true can be used to enable all provenance attestations. By default, a minimal provenance attestation will be created for.

The provenance attestations include facts about the build process, including details such as: Build timestamps. Build parameters and environment. Version control metadata. Source code details.

You use attestations to authorize specific container images to be deployed on platforms, such as Google Kubernetes Engine (GKE) and Cloud Run. To use attestations, you must require attestations in the appropriate rule of your policy.

$ docker buildx build --sbom=true --provenance=true . Provenance attestations are enabled by default, with the mode=min option. You can disable provenance attestations using the --provenance=false flag, or by setting the BUILDX_NO_DEFAULT_ATTESTATIONS environment variable.

Certificate attestation is the act of formally certifying the documents to prove its authenticity. Individual's need certificate in foreign nations for the reason of verification. Certificates are attested after putting a seal and signature of the respective authority.