Verify the ring is closed and sound — no account required
Load the ceremony files

Drop the two ceremony files here: the proof JSON and the original PDF. Nothing leaves your device — verification runs entirely in your browser.

Verify by ceremony ID

In the link or email you received from the organizer.

The server only delivers the files — your browser does the checking. Nothing is trusted to the server.

Or verify offline — load the files yourself
Ring summary
Document fingerprint check
🐞 Report bug COSigna — a Cryptographic Ring of Mutual Consent · The ring is strong because the loop is closed. The ring is strong because the loop is closed. COSigna