Attestations for
  ghcr.io/boks-sh/gzip@sha256:45bbe9fa08142d2d4a90abd2c0a014615c39d86616242be3ecab9714dc96d98a

Verify them yourself:
  cosign verify-attestation --key cosign.pub \
      --type <cyclonedx|slsaprovenance> ghcr.io/boks-sh/gzip@sha256:45bbe9fa08142d2d4a90abd2c0a014615c39d86616242be3ecab9714dc96d98a

=== cyclonedx ===================================================
  (no attestation matches the document published now -- 1 older one(s) are attached)

=== slsaprovenance ==============================================
  (no attestation matches the document published now -- 1 older one(s) are attached)