docs: remove obsolete COSIGN_EXPERIMENTAL=1 from keyless attest example - #442
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Hayden-IO merged 1 commit intoAug 25, 2026
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Keyless signing and attestation is the default since cosign v2, so the COSIGN_EXPERIMENTAL=1 environment variable is no longer required for the cosign attest example. Closes sigstore#440. Signed-off-by: Nikhil Jathar <22786232+mailnike@users.noreply.github.com>
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Hayden-IO
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Aug 25, 2026
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Description
The
policy-controller/sample-policies.mdSBOM example setsexport COSIGN_EXPERIMENTAL=1before a keylesscosign attestcall. Keyless signing/attestation has been the default since cosign v2, so this variable is no longer required and is misleading for anyone on a current cosign release.Per the cosign
CHANGELOG.md:COSIGN_EXPERIMENTAL=1is no longer required to have identity-based ("keyless") signing and transparency.This removes the stale
exportline; thecosign attestcommand is unchanged and already signs keylessly against the public Fulcio root.Closes #440.