-----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-otrs-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-otrs-18.0-bookworm-amd64.iso
      ce601cca6884863c2030765789f41b684f2f50c79973e4c56bcd2816a45d153a  turnkey-otrs-18.0-bookworm-amd64.iso

    $ sha512sum turnkey-otrs-18.0-bookworm-amd64.iso
      f4eb4101d109fd68606001915ee63106f29ddeaf683623f70db2c0ecb9b1b870be5bcc7d7a02d3b59da674c68e492cddc200a629627c1ff7d4aaefeb8cec55e8  turnkey-otrs-18.0-bookworm-amd64.iso

   Note, you can compare hashes automatically::

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

    $ sha512sum -c turnkey-otrs-18.0-bookworm-amd64.iso.hash
      turnkey-otrs-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-----

iQIzBAEBCgAdFiEE0achB3UVKiMsY4ckkPLGHN5q3jcFAmX2s+IACgkQkPLGHN5q
3jeBrg/6Az7pM8cHPUKeH7SYadHEEa7viGa7FAOuEhzxWsEkNThetMhBUKeqqp+d
WAXXMklKyLHs/lLERbjPbKwXveDeapE8YyomWSNUdVxr0sxV9zkypggA2JfHOR53
uo2oJpxifUinwJ/Vx8J3XCi7+k40JxUTVVEA8WGOxDFVqbEGL1LvnkuW1vKQ8kje
epZV1LSAPm9MLZEdFCyc1/xJ+iaOQbak88X2ZIUkSvP1H3iKfgkV5hloZ2UaotRy
b1ctssxwhlFyao0oL47ce59oJNGV5sBgD+aTrHojBX1zEzjahq9Dhp0OfmQztfIA
1L4DYcEuEZD0MmVzpjdWpJgV8jIPUZttxegk79IhuRBpVzT1o5tz9f1YWfD5wYGr
EzwxmbyDtmejWgVC6DIGe7/jtiwJFKNYz6W9V5Uc5rSXXHQmrTqHjbpNBiA2+jW6
IptZO05f/M16gx6IbHjIwn7I2IhE2JEyk0s0xw4VfyUGdX+mw+yUnXGhZjL4Bj6R
P4kWsFJVey4Dp6hl8w0fU4s3K8BI80CXh1w7nxgYNdtKSmuMPG1wZKvQkBeFEe8W
nWQRRPQEOaWRjxELRIF5XmyC5ZMXaqNNPHjrNmWB+Ebtl6LBgcU6k9CQrESjr6Is
1xIlLlbUCy4OLgguJxH+cP/+jkMP0qK4yhBvshQR078z6ubC5fk=
=Lu/P
-----END PGP SIGNATURE-----