Attestations for
  ghcr.io/boks-sh/php@sha256:9a288d62db7fd8fef11f9ec69020395011cff3cb633ab871c82671637d72b7b6

Verify them yourself:
  cosign verify-attestation --key cosign.pub \
      --type <cyclonedx|slsaprovenance> ghcr.io/boks-sh/php@sha256:9a288d62db7fd8fef11f9ec69020395011cff3cb633ab871c82671637d72b7b6

=== 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)