Has this record changed since it was sealed?

Choose a sealed record (a bundle, a .zip) or drop it on the box. Your browser runs seal's checks on it and says green, amber or red, with the reasons. Nothing is uploaded: this page is not allowed to make a network request. Checking is free for everyone, with no account.

A link can carry the key of the witness you trust, so the checker opens with it filled in: /verify-record?witness= followed by its 64-character key_id.