Suno Credentials: what stays with your master?

What happens to Suno’s tags when you master a song? PolishMyTrack creates a new audio file and leaves the original untouched. Here is what carries over into that export.

PolishMyTrack exports the processed audio without copying the source’s embedded C2PA blocks. It also filters recognized generator names from the release fields it writes. These changes affect the new file; they do not change how the music was made.

Keep the original download with your project. Use the mastering report to check the sound, and the metadata checker to inspect tags and embedded credentials. They answer different questions about the same file.

What are Suno Credentials and C2PA?

Suno Credentials identifies Suno provenance through C2PA. Suno says the rollout applies to new downloads, not files already downloaded. Suno’s explanation and checker describe its scope.

Ordinary metadata includes fields such as title, artist and comment. C2PA is more than another comment: it records provenance in signed, tamper-evident structures. It can describe creation and later edits. Editing a recording does not erase its history; an editing tool can preserve that history in updated credentials. See the C2PA FAQ.

Check if a song was generated with Suno

Suno uses this heading for its checker, but the result concerns credentials, not acoustic AI detection. On Suno’s page, select a file or provide a direct media URL. Using that external service sends the audio to Suno.

A missing label cannot establish a recording’s origin. Keep the distinction in mind when checking an older download or an edited copy.

Can I remove C2PA and metatags from a Suno song?

When you export a master, the encoders receive processed audio and the supported release fields. They build a new file rather than copying the original container, so the source’s embedded C2PA payload is not included.

Recognized generator names, including Suno, are also filtered from the release fields written to the export. This happens in Free and Premium. It does not edit or erase metadata in your original file.

The export still contains technical information needed to play the audio. With Premium, you can also write title, artist, album, date and notes to supported formats. A new export is not a promise of a file with no metadata.

C2PA also supports ways of associating credentials with content outside an embedded block, including fingerprinting and watermark-based bindings. Removing embedded metadata is therefore not a universal guarantee against later provenance identification. This is a capability of the standard, not a claim that Suno uses every mechanism. C2PA explains durable credentials.

From source file to export

1. Keep the source. Work from your best available export and retain it with your project records.
2. Scan the track locally. Read the loudness, true peak and dynamics measurements before choosing a mastering direction.
3. Make the mastering pass. Use Smart Auto’s measured choices or shape the result with manual controls. Then listen with level-matched A/B.
4. Review the release details. Premium writes metadata to WAV, FLAC and Opus. Our current MP3 and AAC exports do not write those release fields.
5. Save the new master. The free workflow also creates a fresh export. Credential checking is separate from our audio measurements.

For the audio steps, follow our Suno mastering guide. Keep the source file and the final master as separate files.

What Premium adds

Premium adds manual mastering controls, batch delivery, additional formats and editable release metadata. WAV, FLAC and Opus can carry the release fields you enter. Source C2PA blocks and recognized generator tags are left out of new exports on the free tier too.

Choose Premium if you need those controls or delivery options. You do not need it simply to create a new WAV master without copying the source’s credential blocks.

Questions about credentials

Does mastering make the song non-AI?

No. Mastering changes the sound and creates a new file; it does not change which tools you used to make the music. Describe your process accurately wherever you share it.

Does PolishMyTrack certify that there are no Suno Credentials?

No. The Premium metadata checker validates embedded C2PA signatures, file integrity and signer trust against a bundled C2PA trust list, for supported files up to 100 MiB. It distinguishes valid signatures from trusted signers and failed or inconclusive checks. It does not call Suno’s API, retrieve external credentials or check live certificate revocation. The website also checks the exact WAV, MP3 or FLAC file when you download a master, after release tags are written. A separate result beside the download controls identifies that file. Checks run locally and do not block downloads. AAC, Opus and ZIP bundles are not checked. No embedded credentials found is not a guarantee of no external Suno provenance.

Do I need Premium for a fresh export?

No. Free mastering already exports a new file without copying the source’s credential blocks. Premium adds mastering controls, release metadata, batch work and more delivery formats.

Start with your own track: scan and try free mastering. Your audio stays on your device.