Work · ZkyProof

Prove the survey. Keep the map.

Project · Design and clickable mockup · Midnight Build Club, Cohort 1 · June and July 2026

Stays with the owner

Exact coordinates and the flight path
The identity of the capturing device
Raw imagery and sensor data
Who bought which slice, and when

one proof

What the buyer sees

The region covered
The month of capture
The resolution, as an upper bound
That the verifier's verdict passed, designed to be verified in-circuit

What leaves, and what stays

The problem, as they feel it

A buyer of aerial survey data needs to know what was captured, when, at what resolution, and by a device that was not tampered with. The owner of that data does not want to hand over the flight path, the exact coordinates or the raw imagery to prove it. And neither side wants a permanent record of who bought which slice.

Open it →

The ZkyProof marketplace, showing a survey listing with its public record and its shielded fields. — ZkyProof · zkyproof.eddalabs.io

The approach, as designed: acquire, accredit, prove

01
Signed at capture
The device's secure element signs every byte as it is captured. A tampered pixel breaks the seal.
02
Verified once, then anchored
An attestation-gated verifier runs every check off-chain and compresses the result into one verdict the chain can verify.
03
Proved on Midnight
The owner produces one selective-disclosure proof carrying the public record and nothing else.
04
Bought without a trace
Buyers hold no account. Each purchase is a fresh shielded coin and a fresh secret.

Each step is done by the party best placed to do it, and each leaves behind something the next step can check without repeating the work. The expensive verification happens once, off-chain; the chain only checks a verdict, and a buyer only sees a card.

What a buyer receives

The card. Region, month of capture, resolution as an upper bound, and the fact that every check passed. Coordinates and the device stay shielded and stay provable: the buyer can verify the claim without ever seeing what backs it. Reveal only a card. Negotiate the rest.

Where it stands

Presented at the cohort's pitch day and live at zkyproof.eddalabs.io, not yet wired to Midnight. The mockup lists a storm-damage roof survey with its public record on paper and everything else shielded; the same design carries any survey where the buyer needs certainty and the owner needs to keep the map. The build is the next step.

The facts

StatusDesign and clickable mockup
Backed byMidnight Build Club, Cohort 1
WhenJune and July 2026
Built onDesigned for Compact contracts on Midnight, a passkey wallet in the browser with no extension and no seed phrase, and a device-signed capture path with an attestation-gated verifier; today a clickable mockup with the specification behind it.
Live atzkyproof.eddalabs.io

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