I would say there is a better way of doing this. In the forensic community it has been long known that audio can be timestamped and fingerprinted by the 50/60hz

I would say there is a better way of doing this. In the forensic community it has been long known that audio can be timestamped and fingerprinted by the 50/60hz electrical hum in the background. In many countries this hum is recorded so it can be used later as evidence. Unless counter-forensics are applied, AI audio is not going to have the right hum. It’s not cryptographically secure, but it gives good assurance and doesn’t require tamper resistant hardware (which makes the cryptographic security dependent on how secure the resident keys are) https://en.m.wikipedia.org/wiki/Electrical_network_frequency_analysis https://en.m.wikipedia.org/wiki/Electrical_network_frequency...