-----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  | 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 debian-12-turnkey-observium_18.0-1_amd64.tar.gz.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 debian-12-turnkey-observium_18.0-1_amd64.tar.gz
      476194490938d4a83a6306c6e351c6108d8b3f201006cda41128df9cfe585b69  debian-12-turnkey-observium_18.0-1_amd64.tar.gz

    $ sha512sum debian-12-turnkey-observium_18.0-1_amd64.tar.gz
      9255c6af9fe7e9a9e9ff651335fd12894e858cd2c6aece9035b88d5265780fda9c0fc506de82498dde7856002dd1d280c9ef9dce6162539666bc55fdf93123e7  debian-12-turnkey-observium_18.0-1_amd64.tar.gz

   Note, you can compare hashes automatically::

    $ sha256sum -c debian-12-turnkey-observium_18.0-1_amd64.tar.gz.hash
      debian-12-turnkey-observium_18.0-1_amd64.tar.gz: OK

    $ sha512sum -c debian-12-turnkey-observium_18.0-1_amd64.tar.gz.hash
      debian-12-turnkey-observium_18.0-1_amd64.tar.gz: OK

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

-----BEGIN PGP SIGNATURE-----
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=lN/i
-----END PGP SIGNATURE-----