The night the evidence locker was the only witness

The clip that shouldn't have survived

Most people don't think about dashcams until they need one. Our user was no different. They'd installed Hawk six months earlier as a precaution, let it run in the background, and forgot about it. When the incident happened, they opened the app, navigated to the Evidence Locker, and found the exact moment the collision occurred. Clear angle. Clean timestamp. GPS coordinates showing exactly where it happened.

What they didn't know - what most people don't know - was that the clip had been sealed with a SHA-256 integrity hash the moment it was recorded. Not watermarked. Not just timestamped. Cryptographically locked. Every frame was mathematically bound to a manifest that proved the file hadn't been altered, hadn't been edited, hadn't been tampered with between the moment of impact and the moment they exported it.

When they hit that one-tap export button, Hawk created a ZIP file containing the clip, the hash, and a manifest. Everything needed to prove in court that what the insurance company was looking at was genuine. The other driver's account fell apart within hours.

Why we built the locker the way we did

Early on, we made a choice that shaped everything else. We could build Hawk like most dashcam apps: record, store locally, maybe add a fancy UI. But we kept thinking about the moment someone actually needs the footage. Not tomorrow. Not after they've had time to copy it, edit it, swap it around. In that moment, on that Tuesday night, they needed proof that what they were about to send to insurance was exactly what their phone had captured.

The biometric lock on the Evidence Locker exists because your phone is your phone. You unlock it with your face or your fingerprint. Once footage moves into the locker, it requires that same authentication to access. Not a PIN. Not a password. Your biometric. Fail-closed, meaning if the unlock fails, the locker stays locked. No backdoor.

SHA-256 is what governments use. Banks use it. We use it because we wanted Hawk users to have the same assurance they'd get from a £600 standalone dashcam, but without buying hardware that only works in one car.

The moment it became real

We launched Hawk knowing the core idea was sound. But it wasn't until messages like that Tuesday-night one started arriving that we understood we'd built something that mattered to people in ways beyond convenience. A new driver who felt confident on the motorway because they knew footage was being recorded and protected. A rideshare driver who could prove what happened during a shift. Someone who'd been blamed unfairly and had evidence that proved it.

The free tier gives you ten clips a month and seven days of retention. Enough to get the idea. Local Pro is three quid ninety-nine a month, or thirty-nine ninety-nine a year, and it removes the limits. Rideshare Pro adds the cabin camera, shift mode for multi-trip sessions, and passenger recording notices for drivers who need to log their whole shift. Some users never upgrade. Some do because they realised that evidence matters to them.

What changed after that message wasn't the product. It was how we talked about it. We stopped framing Hawk as a convenience and started framing it as insurance. Not the kind you pay a company. The kind you build yourself by pressing record and letting your phone do what it's designed to do.

The export that arrives when you need it

We obsessed over that one-tap export. When you hit it, Hawk doesn't email your footage to us. It doesn't upload it to our servers where you have to trust that we're keeping it safe, that we won't lose it, that a breach won't expose your driving habits or your location data. Instead, you get a ZIP file. You own it. You send it where you need to. Insurance. Police. Small claims court. Your solicitor.

The manifest inside that ZIP contains the hashes for every clip. It's human-readable. A claims adjuster can see that the file they're looking at is cryptographically identical to the one you recorded. That matters. It matters in a way that's hard to explain until you're sitting across from someone who's denying what you know happened.

One user exported footage after a hit and run. Another after a disputed lane change that insurance wanted to investigate. Another during a rideshare dispute that went to small claims. In each case, Hawk wasn't flashy. It was just evidence. Solid, hashable, lock-secured evidence that held up.

What happens when you press record and move on

Most journeys don't end in disputes. Most clips stay in your locker untouched, backed up to your iCloud if you're using Pro, silent witnesses to uneventful miles. That's fine. That's exactly what they should be. But the ones that matter? They're there. Not compressed by some cloud algorithm. Not deleted after thirty days to save space. Not watermarked with a timestamp that looks suspicious. Just your footage, your integrity hash, your proof.

We've had users tell us they feel calmer behind the wheel now. Not because they drive differently. Because they know that if someone else causes trouble, they've already got the answer. It's in their Evidence Locker, biometrically locked, waiting.