Attestations for
  ghcr.io/boks-sh/gzip@sha256:6ca6326d403d4f5a62c3b7971b8d57b3f1c93bcd56a9a164ee5324196cbf36af

Verify them yourself:
  cosign verify-attestation --key cosign.pub \
      --type <cyclonedx|slsaprovenance> ghcr.io/boks-sh/gzip@sha256:6ca6326d403d4f5a62c3b7971b8d57b3f1c93bcd56a9a164ee5324196cbf36af

=== 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)