Comment 1 for bug 1434190

Here's something that might be close enough for you...
Export profile from ccsm with defaults included
`ccsm` -> 'Preferences' [on the left side pannel] -> 'Profile & Backend' tab -> Profile section -> Export
Pick a name and location, example ~/CompizBackup.profile
"Do you want to skip default option values while exporting your profile?" 'No'
[NOTE: I think this should be asked first before the filename/path is chosen]

The open a bash terminal and copy and paste this in (or retype...)
Adjusting for the filePath/name, etc... you can run something like

grep '\<Shift\>\|\<Control\>\|\<Alt\>\|\<Super\>\|Button\|KP_' -- ~/CompizBackup.profile

This should get a list of shortcut keys that Compiz has assigned.