Attestations for
  ghcr.io/boks-sh/openssh-sftp@sha256:b131b2960fb840718637093c3926e4647622bc8d313140e28f775cd2eb1f3955

Verify them yourself:
  cosign verify-attestation --key cosign.pub \
      --type <cyclonedx|slsaprovenance> ghcr.io/boks-sh/openssh-sftp@sha256:b131b2960fb840718637093c3926e4647622bc8d313140e28f775cd2eb1f3955

=== 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)