Sounds like a verifiable notoriety booster for those sailing the high seas. Imagine if your pirate npub was encoded into *all* popular paid & shared audio. Yarr, I say. Yarr.
This is an npub encoded as audio tones, overlaid on existing audio.
Had a discussion with #[0] today and have spent the last couple of hours creating a service where a creator can upload their mp3 file of a podcast or song, and when someone pays for it the buyer's npub is encoded into the audio stream so that if it leaks everyone knows who did it.
It's loud here to demonstrate it, but will be quiet and at a frequency that still goes through the MP3 compression, but imperceptable when you listen to it. It can't be removed without destroying the audio.
Anyone will be able to use the tool I wrote to decode the npub embedded in the audio, bringing unbearable shame to whoever leaked it.
https://github.com/nostrocket/paidpodcasts/blob/main/test.mp3
Discussion
Can you elaborate?
The one who pays the lightning invoice for an audio clip gets their npub encoded into the audio stream, right? That means people who download pirated audio files can actually verify that a particular audio file is pirated by their "trusted" pirate group or individual. This is not true for movies, games, and music right now, so there is no verifiable way to know the file you are downloading actually came from the group you think it came from. Someone could have repackaged it, put malware into the mix, and "shipped" it with the name of your favourite pirate group. There's no way to know for sure because no one uses public signatures for that stuff. Enter your tool. Now a pirate group can grow their notoriety verifiably by encoding their npub into all media files which go through your tool and people know for sure it came from them.