# signing without long-lived keys
cosign sign registry.example.com/api@sha256:4f3c…
# verification on the client side
cosign verify \
--certificate-identity-regexp '^https://github.com/acme/' \
--certificate-oidc-issuer \
https://token.actions.githubusercontent.com \
registry.example.com/api@sha256:4f3c…Your client knows they received exactly what left your process.