Attestations for
  ghcr.io/boks-sh/grype@sha256:3926d9500c112bc3e4f3081f26b322c0370d4cdf0bae38e7c6d6e268e64cf990

Verify them yourself:
  cosign verify-attestation --key cosign.pub \
      --type <cyclonedx|slsaprovenance> ghcr.io/boks-sh/grype@sha256:3926d9500c112bc3e4f3081f26b322c0370d4cdf0bae38e7c6d6e268e64cf990

=== 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)