security cameras with live-in partner

Hi, I want to get security cameras for my house. My threat model is proving my innocence should someone say I was somewhere else (second time this has happened to me, still dealing with court). I wish I could wear a body cam 24/7 with infinite battery and automatic uploads to a remote, encrypted cloud storage, but that’s not reality.

Was going to get a synology nas but that can be stolen. Was going to hide it in the attic …

automatic battery body body cam cam cameras cloud court encrypted house live partner privacy security security cameras threat threat model