Attestations for
  ghcr.io/kapsl-sh/cmake@sha256:3389c13a9566d1d8dc55d73b16d63c7d0cc0fb4f1ef5a034966da8773a231ac6

Verify them yourself:
  cosign verify-attestation --key cosign.pub \
      --type <cyclonedx|slsaprovenance> ghcr.io/kapsl-sh/cmake@sha256:3389c13a9566d1d8dc55d73b16d63c7d0cc0fb4f1ef5a034966da8773a231ac6

=== cyclonedx ===================================================
  subject   ghcr.io/kapsl-sh/cmake
  digest    sha256:3389c13a9566d1d8dc55d73b16d63c7d0cc0fb4f1ef5a034966da8773a231ac6
  states    32 component(s) are inside this image
      brotli                 1.2.0-3build1            pkg:deb/ubuntu/brotli@1.2.0-3build1?distro=ubuntu-26
      bzip2                  1.0.8-6build2            pkg:deb/ubuntu/bzip2@1.0.8-6build2?distro=ubuntu-26.
      cmake                  4.2.3-2ubuntu2           pkg:deb/ubuntu/cmake@4.2.3-2ubuntu2?distro=ubuntu-26
      curl                   8.18.0-1ubuntu2.4        pkg:deb/ubuntu/curl@8.18.0-1ubuntu2.4?distro=ubuntu-
      cyrus-sasl2            2.1.28+dfsg1-9ubuntu3    pkg:deb/ubuntu/cyrus-sasl2@2.1.28%2Bdfsg1-9ubuntu3?d
      e2fsprogs              1.47.2-3ubuntu4          pkg:deb/ubuntu/e2fsprogs@1.47.2-3ubuntu4?distro=ubun
      expat                  2.7.4-1                  pkg:deb/ubuntu/expat@2.7.4-1?distro=ubuntu-26.04
      gmp                    2:6.3.0+dfsg-5ubuntu2    pkg:deb/ubuntu/gmp@2%3A6.3.0%2Bdfsg-5ubuntu2?distro=
      gnutls28               3.8.12-2ubuntu1.1        pkg:deb/ubuntu/gnutls28@3.8.12-2ubuntu1.1?distro=ubu
      keyutils               1.6.3-6ubuntu3           pkg:deb/ubuntu/keyutils@1.6.3-6ubuntu3?distro=ubuntu
      krb5                   1.22.1-2ubuntu4.1        pkg:deb/ubuntu/krb5@1.22.1-2ubuntu4.1?distro=ubuntu-
      libarchive             3.8.5-1ubuntu2.2         pkg:deb/ubuntu/libarchive@3.8.5-1ubuntu2.2?distro=ub
      ... and 20 more

=== slsaprovenance ==============================================
  subject   ghcr.io/kapsl-sh/cmake
  digest    sha256:3389c13a9566d1d8dc55d73b16d63c7d0cc0fb4f1ef5a034966da8773a231ac6
  build     https://index.kapsl.sh/buildtype/v1
  builder   https://index.kapsl.sh
  from      3 resolved input(s)
      base-image         ghcr.io/kapsl-sh/kapsl-base-static:latest
      apt-package        pkg:deb/ubuntu/cmake@4.2.3-2ubuntu2?arch=amd64
      apt-package        pkg:deb/ubuntu/cmake-data@4.2.3-2ubuntu2?arch=amd64
  sbom      sbom.json sha256:c7d31b7931fe0bab1f699a38a3acd922...