Vitni Plus

The press gate you can watch refuse.

Vitni with a harder secure element and a press gate that is enforced rather than described. It is the same board as the flagship minus the screen — which is the whole of the difference in price.

An unarmed press is refused and produces nothing. Not an error and not a silent no-op: the device declines, and no signature exists. A press gate you can watch fail is worth more than one you are told about.

Specifications

• STM32U585 + Infineon OPTIGA secure element — readout protection enabled on shipping units
• Press-gated: nothing is signed without a physical press, and an unarmed press signs nothing
• Second signing key on the element neutralised as a manufacturing step
• Potted in clear resin; serialized, with a record on the public rail

Availability

Shipping now. A pilot run of three hand-built articles, each individually gated before it ships. When the three are gone this listing closes until the next run. Also offered with 20 personalized TamperVerify seals as the Attested Fulfilment Starter, $119, at zknot.io/attestation.

Try one before you buy one

Every attestation device signs a challenge and the record is checked in your browser at verifyknot.io/start — no account, no login. The verdict is computed from the record itself, not handed down by our server.

What it does not do

A signature proves that a specific key signed specific bytes. On its own it does not prove who held the key, that a person was present, or that the contents are true. Each rung of the line adds one of those, and we say which. The timestamp on a record is ours, not an outside authority’s. Tamper-evident, not tamper-proof.

Hand-built in small runs in Utah · veteran-owned (SDVOSB) · US shipping with tracking · returns