Skip to content

02 / Offline Verifier

Offline Verifier

Open a seal and get valid or invalid. The check runs on your machine, offline.

Tested with the cable out

2026-09-11
It gave verdicts on a machine with the network cable pulled.
connections
Zero non-loopback connections while each verdict was on screen.

Nothing broader than that is claimed.

Request the verifier
The blue-violet dragon inspects a sealed record through a lens

What it opens

A v3 seal .json or .seal.json sidecar, a proof bundle, a sealed .png, an exported report, a completeness attestation, a key rotation chain or a revocation list.

What it does

  • Computes every verdict locally, from the file's own bytes and the trust root compiled into the app.
  • Verifies whole folders in a batch.
  • Exports a self-contained HTML report that can be re-checked later against the engine, so nobody has to trust the file.
  • Shows tampering: it flips one nibble in a copy, and the same engine answers INVALID.

Where it runs

Windows (x86_64) desktop.