Signed Analysis — verify

Check that a document was authored by the verified human named in its credential, and that not one byte has changed since they signed it.

🔒 Nothing you drop here leaves your browser. Hashing and signature verification run locally via WebCrypto; this page only serves the public keys.

No credential handy? Grab the pair below, drop both in, then change one character in the document and watch it fail.
↓ sample document · ↓ its credential

1 · Drop the document (or click)

2 · Drop the credential (.sa.json)

Keys: /.well-known/jwks.json · Agents: POST /api/verify {credential, sha256} · A pass means the named verified human took responsibility for these exact bytes — it does not describe how the work was produced.