-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

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://keybase.io/turnkeylinux/pgp_keys.asc | gpg --import
    $ gpg --list-keys --with-fingerprint release@turnkeylinux.com
      pub   2048R/A16EB94D 2008-08-15 [expires: 2023-08-12]
            Key fingerprint = 694C FF26 795A 29BA E07B  4EB5 85C2 5E95 A16E B94D
      uid   Turnkey Linux Release Key <release@turnkeylinux.com>

    $ gpg --verify turnkey-observium-15.1-stretch-amd64.iso.hash
      gpg: Signature made using RSA key ID A16EB94D
      gpg: Good signature from "Turnkey Linux Release Key <release@turnkeylinux.com>"

    For extra credit you can validate the key's authenticity at:

      https://keybase.io/turnkeylinux

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

    $ sha256sum turnkey-observium-15.1-stretch-amd64.iso
      1884d6121c0b7ef539cf781cb755f81968191af86bfe2f99f43b605fe9de3ce6  turnkey-observium-15.1-stretch-amd64.iso

    $ sha512sum turnkey-observium-15.1-stretch-amd64.iso
      5d60ea5d8aa6a19e00ef440c4057eaa522d970e9ec5dea1592306782e26cf21a5e454e18d0876a6cf39d6927ac58a93bb896cec2c6c41cb95b4ee95e418d78cf  turnkey-observium-15.1-stretch-amd64.iso

   Note, you can compare hashes automatically::

    $ sha256sum -c turnkey-observium-15.1-stretch-amd64.iso.hash
      turnkey-observium-15.1-stretch-amd64.iso: OK

    $ sha512sum -c turnkey-observium-15.1-stretch-amd64.iso.hash
      turnkey-observium-15.1-stretch-amd64.iso: OK

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Iziq5NX5CNHHMQbZQ9VqqMIjA4OtJhFX9aN8YCUQuZmtgouFlGtRDUwVLih/Vd/S
MbC6TK7xtjl8ew61QiDNfS3pqLM+xvRNWUuRtHqdGCUtgJVDZpfJRIa2n/67ohS9
PH6TvVcqvPmPJfMQIzAjG5Tg+SIPdJ2HZWeKwk507aLazrRl6yX5fMwcyy6On4h0
Lhu63PjwxcivN2/I5MoPoRhD7vRI/yUOEzi2uakk4I9UP36NTKlC7fs1xfxQdLAf
ge7fcweDXeYEpG+7aEENbtYnnMpPTw==
=q/7l
-----END PGP SIGNATURE-----