Suno’s New Download Fingerprinting

13d (edited) • Community

I looked into three different Suno WAV files to see what changed with the new download system.

Sample A – This WAV was downloaded before the change. It was a normal 16-bit / 48 kHz WAV with basic Suno metadata, including the creation date and song UUID. I found no C2PA credential, no signed provenance data, and no obvious audio watermark.

Sample B – This WAV was downloaded after the change (Sep 3rd). (Song > WAV Unlock & Download)

The audio is still 16-bit / 48 kHz, but the file now includes a signed C2PA Content Credential, an AI-generated provenance tag, Suno’s "com.suno.fingerprint.v4" identifier, the song UUID, and a SHA-256 cryptographic binding tied to that WAV. I still did not find any obvious audible, ultrasonic, or simple hidden-bit watermark in the actual audio.

Sample C – This WAV was exported through Suno Studio.

(Song > Edit > Open In Studio > Single-Track > Top Right Export > MultiTrack > Downloads Zip Containing Song WAV)

This one was 32-bit float / 48 kHz and looked very different. It only had a basic “made with Suno Studio” comment and did not show the song UUID, encoder tag, C2PA credential, Suno fingerprint assertion, or embedded provenance hash that Sample B had.

The other big change is downloads. Regular Premier downloads are now limited and refresh monthly. However, Studio exports are not counted the same way, so I can still finish songs in Studio and export them even after using the regular download allowance. For distribution, my older DistroKid uploads were Sample A, while new regular Suno downloads may now carry the extra C2PA/fingerprint information from Sample B. That doesn't currently stop me from uploading to DistroKid, but future releases may include more provenance information.

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Suno’s New Download Fingerprinting