Our proprietary audio watermarking technology embeds inaudible multimedia data - such as text, audio, images, or online databases - into audio, enabling verification of its origin and authenticity. By actively monitoring the internet for watermarked content, it aids in piracy prevention and verification.
Our Deepfake Detection technology accurately differentiates between AI-generated voices and real human voices in real time. Our model has won multiple awards in international audio deepfake detection competitions, demonstrating its industry-leading reliability and effectiveness.
Full-chain content provenance. Every OfSpectrum watermark carries C2PA-compatible metadata — ownership, creation timestamp, licensing terms, and modification history — embedded directly into the audio signal. Verifiable at any point in the content lifecycle. Supports EU AI Act Article 50 transparency compliance, enabling machine-readable labeling of AI-generated and synthetic audio.
Inaudible watermark infrastructure for copyright protection, AI provenance, and content authenticity.
Why OfSpectrum
Purpose-built API infrastructure for the AI era.
Sub-100ms verification latency. RESTful API and Python SDK for encoding and verification. Self-serve — no sales call required.
C2PA-compatible and beyond. Enterprise-grade security with independent audits. Built for the authenticity standards of today and tomorrow.
Identity-based matching, more efficient than fingerprint comparison. Pinpoint leaks in minutes, not days, with automated web-wide scanning.
Psychoacoustic embedding engineered to be imperceptible. Validated on ViSQOL and PESQ 4.6+ at 48 kHz. Withstands compression, editing, and over-the-air re-recording.
Interactive Demo
This track already carries a watermark.
It's designed so you don't. And that's the point.
The spectrogram picks it up. Ears usually don't — same clarity as the original, no artifacts, no noise, no drop in quality.
The provenance layer behind inaudible watermarking, ownership, attribution, and policy-aware audio workflows.
The real challenge isn't embedding watermarks — it's keeping them verifiable under attack without becoming an attack surface themselves.
Choose your path below — we have options for developers, businesses, and everyone in between.
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