The checksums below are a simple way for you to double-check the copy of Jaxx you are installing is genuine. You can match the checksum in your instance of Jaxx with the data below.
$ shasum -a 256 Jaxx.Liberty-2.2.4.dmg
8ef07030794a318d7cd70877c63a783049f552d263d062cb202cabeab9f07f5fDownload for Mac
$ certutil -hashfile Jaxx.Liberty-setup-2.2.4.exe sha256
3b00adb033c3685d043ab001da44f8a1a1242cfdcd8fd17638d17bb7fad9caaaDownload for Windows
$ shasum -a 256 com.liberty.jaxx-2.2.5-i386.AppImage
40da7d55a4b71882fb7c1b5aa5f2cf69a403df7878fb4fc48999d0787e7b0eceDownload for Linux 32
$ shasum -a 256 com.liberty.jaxx-2.2.5-x86_64.AppImage
6c12099026a79d76ead64d923457e5e19cfa17bf4c9e609bb163c57818a03dbcDownload for Linux 64
*Mac OS X Note: Depending on your system settings, the system might warn you that "Jaxx can't be opened because it comes from an unidentified developer." You can either change your system settings to allow apps from unknown developers in your "Security & Privacy" settings, or simply right click Jaxx → Open (as administrator), which will prompt you with a warning.