Attestations for
  ghcr.io/kapsl-sh/bison@sha256:e6cad73ef00251dd386bb97a3afa18a2ee564ea429a6cb1f830e1f2f31db0cfb

Verify them yourself:
  cosign verify-attestation --key cosign.pub \
      --type <cyclonedx|slsaprovenance> ghcr.io/kapsl-sh/bison@sha256:e6cad73ef00251dd386bb97a3afa18a2ee564ea429a6cb1f830e1f2f31db0cfb

=== cyclonedx ===================================================
  subject   ghcr.io/kapsl-sh/bison
  digest    sha256:e6cad73ef00251dd386bb97a3afa18a2ee564ea429a6cb1f830e1f2f31db0cfb
  states    1 component(s) are inside this image
      bison                  2:3.8.2+dfsg-1build4     pkg:deb/ubuntu/bison@2%3A3.8.2%2Bdfsg-1build4?distro

=== slsaprovenance ==============================================
  subject   ghcr.io/kapsl-sh/bison
  digest    sha256:e6cad73ef00251dd386bb97a3afa18a2ee564ea429a6cb1f830e1f2f31db0cfb
  build     https://index.kapsl.sh/buildtype/v1
  builder   https://index.kapsl.sh
  from      2 resolved input(s)
      base-image         ghcr.io/kapsl-sh/kapsl-base-static:latest
      apt-package        pkg:deb/ubuntu/bison@2:3.8.2+dfsg-1build4?arch=amd64
  sbom      sbom.json sha256:7358e2b51ca136533b286c63abcbfe58...