Evidence-grade jobsite documentation
Own your evidence.
Kill the backcharge.
A 60-second LiDAR scan on the iPhone your foreman already carries. Every photo is pinned to its exact spot in the room, stamped with a time you can prove, and filed under your company's name — not the GC's.
No 360 camera. No BIM department. No floor-plan uploads.
What is VeriWalk?
VeriWalk is a jobsite documentation app for construction subcontractors that pins each photo to its exact position in a LiDAR floor-plan scan of the room, so a subcontractor can prove the condition of a space before and after their scope. Every record carries a serial number and a tamper-evident SHA-256 fingerprint, exports as a PDF report, and lives in your company's account — built to defend against a backcharge months after your crew has left the site.
DATUM 01 The backcharge story
The letter shows up four months after your crew left.
The pay app comes back short. Buried in it is a backcharge for damage your crew supposedly caused — a scuffed door, a cracked slab, a wall that was already open when you got there. The deduction is real money, and it is coming out of work you already finished.
You know your crew didn't do it. But knowing isn't proof. Your photos are scattered across three different camera rolls, none of them dated in a way anyone trusts, none of them tied to a spot in the building. By the time you find them, the drywall is closed and the next trade has covered everything.
Whoever shows up with clean, organized documentation writes the narrative. Right now, that is almost never the sub.
You didn't lose the argument.
You lost the paper trail.
Photos with no anchor
A close-up of a crack proves nothing if no one can say which room it's in or what day you took it.
Timestamps nobody trusts
A camera-roll date can be changed in two taps. That's not evidence — it's a suggestion.
The trail gets covered
Once the next trade closes the wall, the pre-existing condition is gone. You can't re-shoot the past.
DATUM 02 Whose account does the evidence live in?
On most jobs, the walkthrough footage belongs to the GC.
General contractors run enterprise capture tools that photograph the whole site on a schedule. It's good technology. But that footage lives in the GC's subscription, under the GC's login. In a dispute between you and the GC, that's the other side's file cabinet — and you're asking them to go find the picture that clears you.
Their record
- Lives in the general contractor's subscription and login
- Captures the whole site on the GC's schedule, for the GC
- You see what they choose to share, when they choose to share it
- In a sub-vs-GC dispute, it's the other party's evidence
Your record
- Lives in your company's account, under your control
- Captures your scope, on your schedule, before and after
- You export it, share it, and attach it whenever you need to
- In a dispute, it's your evidence — and it's ready to go
DATUM 03 How it works
Two scans and a report. That's the whole system.
Scan In
Walk the room and scan the pre-existing conditions before your crew touches anything. The damage that was already there is now on the record, dated and pinned to the spot it's in.
Scan Out
When your work is done, scan it again before the next trade closes the wall. Your finished scope is documented in place — proof of what you left behind, exactly as you left it.
When the letter comes
Pull the timestamped report, attach it to the email, and reply. The GC, the adjuster, or a judge can follow it without a login and without an app. The conversation is over before it starts.
DATUM 04 What's in the record
Built to hold up — on the jobsite and after it.
Position-pinned photos
Every photo drops onto an auto-generated floor plan at the exact spot you shot it. No guessing which room, which wall, which corner.
Tamper-evident timestamps
Each scan is stamped with a time that can be verified independently — not a camera-roll date anyone can edit after the fact.
Reports people can follow
A clean branded PDF with the floor plan, the pins, and the photos. A GC, an adjuster, or a judge can read it start to finish.
Acknowledge links
Send a share link the other party can open and acknowledge in their browser — no account, no app, no download on their end.
Works offline
Scan in the basement, the shaft, the parking level. It captures with no signal and syncs to your account once you're back in range.
No extra gear
No 360 camera, no BIM department, no floor-plan uploads. Just the iPhone Pro your foreman already carries.
DATUM 05 Founding crews program
Free during the pilot. We onboard your foreman ourselves.
We're taking on a small number of signatory subs to prove this out on real jobs. If you scan in and scan out on your next project, we'll show you exactly how to turn it into a report the day a backcharge shows up.
- Free for founding crews through the pilot — no card, no contract.
- We sit down with your foreman and walk the first scan with him.
- Your scans, your account, your reports — yours to keep.
Request a pilot spot
Form WO‑01Founding Crews · 2026
Tell us about your shop and your worst documentation headache. We'll reach out to set up your crew.