How to use an handheld device with GNU/Linux and YouTube to protect from death threats?

Suppose you fear you could meet someone who will threaten you with death. Assuming the bad guy won't destroy your handheld (for example an Ubuntu Touch device) on sight, a barely decent form of protection would be to have your phone continuously stream its microphone to a remote server you do not have access to, programmed to publicly upload the recorded audio content on a popular YouTube channel on a regular basis, unless a circle of neutral, trusted, physically unavailable people for the threatener do not cancel it if nothing happened. I want to know how to do that.