Verify a proof

Don't trust us.Check it yourself.

Check an evidence bundle. Nothing is uploaded.Drop in an evidence bundle exported from Blue Falnoa. Your browser checks every entry, the seal and the time-stamp. The file never leaves your device.

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Runs entirely in this page. No upload, no server, no account.

or paste the JSON

Evidence bundle (JSON)Public key you trust (optional)Read it from your instance over a channel you trust. Without it, the key inside the bundle is used, which shows consistency but not whose key it is.

Download the sample

The sample uses fictional entries and a throwaway key. It has no time-stamp, because no real authority issued one.

What this does and does not prove

No entry in the bundle was changed, removed or reordered.
The bundle ends exactly at the sealed last entry.
The seal was signed by the key you check against.
If present, the time-stamp is for this very seal.

What happened before the first entry in the bundle.
That the system was honest when it wrote an entry.
That the key in the bundle belongs to your instance, unless you pin it.
That the time-stamp authority's signature is valid. This page does not check it.
Any certification or legal evidential value.

Prefer a program you can build yourself?

The command-line verifier does the same checks and shares no code with the product.The command-line verifier does the same checks and shares no code with the product. It also exports the time-stamp token so you can check the authority's signature with standard tools.

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