AI watermarking
Embedding hidden signals into AI-generated content so it can later be identified as machine-made.
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AI watermarking encodes an imperceptible signal — in pixel statistics, token frequencies, or audio coefficients — that survives ordinary post-processing (compression, cropping, light edits) and can be detected algorithmically later. The goal is provenance: a detector can say "this image was generated by system X" without requiring the user to disclose it. The hard part is the adversarial gap — a watermark strong enough to survive removal is often strong enough to degrade quality, and one subtle enough to be invisible is often easy to strip once the scheme is known.
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SynthID's truce
OpenAI now stamps Google's invisible watermark onto every image it generates — the moment a vendor silo became a cross-industry convention.
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