What is invisible watermarking?
How invisible watermarks work, how they differ from logos and metadata, and what a match tells you.
Read guide EvaluationHow to test invisible watermarking
A practical checklist for recovery, visual quality and the files that don’t pass.
Read guide AI provenanceAI image provenance: records, watermarks and C2PA
Where your records, watermarks and Content Credentials fit together.
Read guideLatest from the blog
All postsLeak Ledger: Trump's ballroom donors and a State Dept. feud leaked, week of October 12
Whistler3 itemsBallroom donor records, a year of State Department emails and an Accenture AI spending cap all reached reporters. What each says about tracing a copy.
- Engineering
EU AI Act Article 50: what the watermarking rules ask for
Whistler3 min readSince August 2, 2026, providers must make AI-generated content machine-detectable in the EU. What Article 50 requires, the dates, and why metadata falls short.
Leak Ledger: MLB's lockout memo and German spy files leaked, week of October 5
Whistler6 itemsAn MLB memo sent to 30 clubs, German intelligence files, client data from an EY breach and more leaks, and what each one shows about tracing a copy.
Ready to try it?
Watermark an image, then detect the watermark.