Forensic audio watermarking
Audio watermarking for music you need to trace.
Listening Copy can embed a different inaudible identifier in every recipient's listening copy. If that audio later appears where it should not, you can scan it and identify which delivered copy matched.
What a recipient watermark does
A normal private link controls access to one URL. A recipient watermark travels inside the audio itself. Listening Copy connects that embedded identifier to the recipient label you supplied, giving you a traceable delivery record without putting the recipient's name or email directly into the audio payload.
How it works
- Create a protected send.Choose a track or playlist and identify the intended recipient.
- Listening Copy prepares a unique copy.A keyed, recipient-specific identifier is embedded before delivery.
- Trace a suspect file.Upload the file to Trace; a valid match points back to the delivery record.
What it does not promise
A watermark is not DRM and cannot prevent someone from recording or copying audio. It is a best-effort tracing signal, not proof of identity or legal liability. Heavy processing—including time stretching, pitch shifting, re-recording or severe re-encoding—can damage or remove it. A trace result should be investigated alongside your delivery records and other evidence.
Watermarked output is a high-quality MP3 listening copy, not a replacement for a WAV or FLAC master. Use ordinary lossless delivery when the recipient needs production-ready files.
Technical transparency
Listening Copy uses the open-source audiowmark engine with a private deployment key. The engine stores a 128-bit message in the audio spectrum and can retrieve it without the original file. Listening Copy validates detected identifiers against its own delivery records to reject unrelated patterns.
Product and methodology reviewed 26 July 2026 by Berg Capital ehf.