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AI Watermark & Provenance Inspector

SynthID 2D-DCT Engine
Model & Watermark Layer STEP 1
Visible Sparkle Badge Toggle user-facing UI disclosure
Modulates Mid-Frequency 2D-DCT coefficients without degrading visible perceptual visual fidelity.
Policy Architecture: Toggling off the visible sparkle removes overlay pixels while the mathematical 2D DCT watermark remains firmly anchored into the image coefficients.
Forensic Spatial & Spectral Inspection LIVE RENDERING
✦ Nano Banana AI
DC → LOW → MID (INJECTED) → HIGH FREQ
Attack Simulator & Metrics STEP 2
PSNR Fidelity 48.2 dB
Imperceptible (>40dB)
Detector Score 99.4%
Authentic SynthID
Correlation Coefficient (r) 0.962
Generator Engine Nano Banana 1.0
Visible Sparkle Enabled (Active)
Invisible Watermark 2D-DCT Embedded
Payload Digest 0x8F94...B102
C2PA Standard ISO/IEC 21122-1

Discrete Cosine Transform Watermark & Visible Badge Architecture

Read the explanation

AI watermarking operates across dual domains: a visible badge disclosure on pixels, and an invisible discrete cosine transform carrier in the frequency spectrum. Toggling off the visible badge simply hides overlay pixels. The underlying luminance coefficients retain pseudorandom watermark bits injected into the mid-frequency band. During attack testing, applying JPEG compression or blur disturbs pixel values, but normalized correlation with the cryptographic key maintains a high detector confidence score.

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