Attestations for
  ghcr.io/boks-sh/diffutils@sha256:159122ea86d4249ac998bd1ab651417411186a9f1b3a0d241345a4d19b9a289a

Verify them yourself:
  cosign verify-attestation --key cosign.pub \
      --type <cyclonedx|slsaprovenance> ghcr.io/boks-sh/diffutils@sha256:159122ea86d4249ac998bd1ab651417411186a9f1b3a0d241345a4d19b9a289a

=== cyclonedx ===================================================
  (no attestation matches the document published now -- 0 older one(s) are attached)

=== slsaprovenance ==============================================
  (no attestation matches the document published now -- 0 older one(s) are attached)