Sigstore + Cosign — Keyless Artifact Signing Deep Knowledge : Use with technology: or . Why Sigstore Traditional signing requires long-lived private keys: distribute, secure, rotate, audit. Sigstore replaces the model with keyless signing : 1. CI proves identity via OIDC (e.g., GitHub Actions has built-in OIDC token) 2. Fulcio issues short-lived (10 min) X.509 cert bound to that identity 3. Sign artifact, attach signature + cert to artifact 4. Rekor transparency log records the signing event (Merkle tree) 5. Verifier checks: cert chain is valid, identity matches expected, log entry exists No…