-----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-invoice-ninja-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-invoice-ninja-18.0-bookworm-amd64.iso
      3e9caceca8ea0f9dee56763aea2334b77d086bb16fbe060805dbd21ef3f14112  turnkey-invoice-ninja-18.0-bookworm-amd64.iso

    $ sha512sum turnkey-invoice-ninja-18.0-bookworm-amd64.iso
      acfa8df63fb6c470167d404f540b4300a9bd7612fb2cab08be8f7b081380d96a193af478e721498f250b24495a089ff3a0e86d4c107ba75ab5edef57fc76833d  turnkey-invoice-ninja-18.0-bookworm-amd64.iso

   Note, you can compare hashes automatically::

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

    $ sha512sum -c turnkey-invoice-ninja-18.0-bookworm-amd64.iso.hash
      turnkey-invoice-ninja-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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=aPk8
-----END PGP SIGNATURE-----