Attestations for
  ghcr.io/boks-sh/cosign@sha256:66c857f40a41ab3c7789854f1581b1988ca83bfda1d7b36f3f70f3e5418205eb

Verify them yourself:
  cosign verify-attestation --key cosign.pub \
      --type <cyclonedx|slsaprovenance> ghcr.io/boks-sh/cosign@sha256:66c857f40a41ab3c7789854f1581b1988ca83bfda1d7b36f3f70f3e5418205eb

=== 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)