I need a tool that will work with widevine content OTHER than netflix and amazon.

i.e. https://bitmovin.com/demos/drm

https://bitmovin-a.akamaihd.net/content/art-of-motion_drm/mpds/11331.mpd
https://widevine-proxy.appspot.com/proxy

I can pay a large sum in bitcoin to anyone that can provide such tool.