New proof
Developers
Open, verifiable proof — built for the EU AI Act era

Prove anything existed — and hasn't changed since. Free.

Pick what you're anchoring, or drop a file. It's fingerprinted in your browser — nothing leaves your device — and you get a receipt anyone can verify.

Running an AI product? Free Article 50 readiness scan Check if your AI can prove what the EU AI Act requires — before 2 August. No signup. Open the scanner →
More ways to anchor
Drop a file to anchor it
…or click to browse · fingerprinted locally, nothing uploads
Verify:
Create and verify — free, no signup. Only the 64-char fingerprint is ever anchored — never your file.