-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512

To ensure the image has not been corrupted in transmit or tampered with,
perform the following two steps to cryptographically verify image integrity:

1. Verify the authenticity of this file by checking that it is signed with our
   GPG release key:

    $ curl https://raw.githubusercontent.com/turnkeylinux/common/18.x/keys/tkl-bookworm-images.asc | gpg --import
    $ gpg --list-keys --with-fingerprint release-bookworm-images@turnkeylinux.org
      pub   rsa4096 2023-05-22 [SC] [expires: 2043-05-17]
            2614 7592 087C 0EDE 4214  3B63 7761 DEBA BBCF BA7C
      uid           [ unknown] TurnKey GNU/Linux Bookworm Images (GPG signing key for TurnKey Linux Bookworm Images) <release-bookworm-images@turnkeylinux.org>
      sub   rsa4096 2023-05-22 [S] [expires: 2043-05-17]
      
    $ gpg --verify turnkey-leantime-18.0-bookworm-amd64.iso.hash
      gpg: Signature made using RSA key ID 26147592087C0EDE42143B637761DEBABBCFBA7C
      gpg: Good signature from "0"

2. Recalculate the image hash and make sure it matches your choice of hash below.

    $ sha256sum turnkey-leantime-18.0-bookworm-amd64.iso
      e3db984497e5681337f2bd97b2c427a0a25e869599663cd8f340aa767724f073  turnkey-leantime-18.0-bookworm-amd64.iso

    $ sha512sum turnkey-leantime-18.0-bookworm-amd64.iso
      b2e21dad0b27582e0f9734529a4da0c77e1abe66be65da5f2c19144581924fa328b63b7d00b94bce3a6ca4f2eacf5ddb85f8b83a4652b3d3e57c00d2b3596c15  turnkey-leantime-18.0-bookworm-amd64.iso

   Note, you can compare hashes automatically::

    $ sha256sum -c turnkey-leantime-18.0-bookworm-amd64.iso.hash
      turnkey-leantime-18.0-bookworm-amd64.iso: OK

    $ sha512sum -c turnkey-leantime-18.0-bookworm-amd64.iso.hash
      turnkey-leantime-18.0-bookworm-amd64.iso: OK

    Final note, when checking SHAs automatically, please ignore warning noting that some lines are improperly formatted.

-----BEGIN PGP SIGNATURE-----
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=Gb7i
-----END PGP SIGNATURE-----