Attestations for
  ghcr.io/kapsl-sh/bison@sha256:2301bca1af90c07d11cf914b8c7db9283b955183c3eee56ec99b07f436a07578

Verify them yourself:
  cosign verify-attestation --key cosign.pub \
      --type <cyclonedx|slsaprovenance> ghcr.io/kapsl-sh/bison@sha256:2301bca1af90c07d11cf914b8c7db9283b955183c3eee56ec99b07f436a07578

=== cyclonedx ===================================================
  subject   ghcr.io/kapsl-sh/bison
  digest    sha256:2301bca1af90c07d11cf914b8c7db9283b955183c3eee56ec99b07f436a07578
  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    sha256:2301bca1af90c07d11cf914b8c7db9283b955183c3eee56ec99b07f436a07578
  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=arm64
  sbom      sbom.json sha256:a6333f564a44063666558409b7fed23b...