Proof of presence

Hand a client or auditor a time record they can verify themselves. How Clox signs every punch into a tamper-evident ledger, how to export the PDF and the verifiable bundle, and what the public verifier checks.

Clox writes every clock-in and clock-out into a tamper-evident ledger. Each punch is linked to the one before it and signed once signing is enabled, so the record cannot be quietly edited or reordered after the fact. When a dispute, audit, workers' comp review, or chargeback comes up, you can hand over a record the other side can check on their own.

What it does and does not prove

It proves that the record of what was captured at each punch, the time, the GPS reading, and whether a selfie was taken, has not been altered since it was recorded. It does not prove the GPS location is genuine. The location still comes from the worker's phone, the same as any GPS clock-in. Treat proof of presence as a way to keep an honest record honest, not as a way to make a location impossible to fake.

Export it from Reports

Open Reports, set your date range, and open the Export menu. Under the Proof of presence group you get two downloads.

• Proof of Presence (PDF) is a printable, per-worker report of where and when each punch happened, with the distance to the nearest worksite and the signature status of each record.
• Verifiable bundle (JSON) is a machine-readable file for one employee that another person can check independently. Because a bundle is a single signed chain, it is available only when the report is narrowed to one worker.

Verify a record at getclox.com/verify

Anyone you give a bundle to can go to getclox.com/verify, paste it in, and check it. The verifier recomputes the record and confirms it was signed by Clox and has not been altered or reordered. Nothing pasted there is stored, and they do not need a Clox account.