Hello cas,
gtkhash can add an additional "digests" page on the file properties dialog of popular file managers. It currently supports
- Nautilus (Gome),
- Thunar (XFCE),
- Nemo (Cinnamon)
- Caja (Mate)
The changelog of gtkhash (1.0-1) says:
* Remove gtkhash-common binary package.
So just go ahead and let it go.
greetings
musca