This package was updated with the correct sha512 on 2019-10-02

Nov 1, 2019, 11:51 by notify@aur.archlinux.org:
dncrash [1] filed a orphan request for protontricks [2]:

The package is broken due to wrong checksums and the maintainer
doesn't seem to be answering.

[1] https://aur.archlinux.org/account/dncrash/
[2] https://aur.archlinux.org/pkgbase/protontricks/