Our engine identifies your recordings even when they are sped up, pitched, re-recorded, clipped or regenerated by AI - and scores every match, so humans decide the hard cases.
Each recording is distilled into a compact constellation of time-frequency landmarks - a fingerprint that identifies the audio without needing to store or ship the audio itself.
We match segments, not whole files. A short clip buried inside a long video or livestream can be located with exact in and out points - the timestamps that go into the evidence pack.
Matching is designed to withstand the usual tricks - speed and pitch shifts, EQ, re-encoding, cropping - so a "nightcore" upload or slowed remix still points back to your master.
Every flag carries a confidence score. High-confidence exact matches move fast; harder classes route to analysts.
Direct re-uploads and embedded uses of the original recording - the clearest class, matched acoustically against your fingerprints.
Melodic and harmonic matching surfaces covers and re-records - a composition-side right, enforced differently from masters.
Sped-up and slowed versions, remixes, loops and sampled fragments - matched at segment level even when heavily transformed.
AI voice clones and model regenerations of your works are flagged for analyst review - the fastest-growing and most contested class, which is exactly why a human decides.
The master (the recording) is matched acoustically. The composition (the song itself) is matched melodically - that is how a cover with none of your original audio still shows up.
The distinction drives enforcement: a re-upload of your master can be taken down almost anywhere, while a cover is often a licensing and monetization question rather than a removal. Our analysts route each case down the correct path. More in our Resources library.
No claim leaves SONPROOF on a machine's word alone. Analysts confirm the match, check for licenses and obvious fair-use contexts, and assemble the evidence pack before a case ever reaches your approval queue.
This is a legal requirement as much as a quality bar: takedown regimes like the DMCA penalize misrepresentation. Verified evidence and your recorded authorization protect both of us.
Bring the releases that get remixed, cloned and re-uploaded the most - and see what the engine finds.