Tuuranton:
The SHA-256 checksum of the downloaded file https://www.torproject.org/dist/torbrowser/6.0/TorBrowser-6.0-osx64_en-US.dm... is on my computer 0f4f6ca01028c2956c811dd94d67a76feb507cad176c031f32e6f95873003b4c
But according to the text file https://dist.torproject.org/torbrowser/6.0/sha256sums-unsigned-build.txt the SHA-256 checksum of the file TorBrowser-6.0-osx64_en-US.dmg should be d68d01889ba38764ebf2057b3cd3263f638a74205031a6d1df11ab8ca13a3618
Why the mismatch?
This is due to OS X code-signing that arrived with Tor Browser 6.0. See: https://blog.torproject.org/blog/tor-browser-60-released third section.
We are working on providing instructions on how to remove the code-signature in order to get the same SHA256 sum as the pre-signed bundle. See: https://bugs.torproject.org/18925 for these efforts.
Georg