ProofNest seals every photo with GPS coordinates, a SHA-256 hash, and an optional Bitcoin timestamp the moment you press the shutter — evidence documentation that holds up when someone says prove it.
Every photo gets a SHA-256 hash before it is saved. Change a single pixel later and the fingerprint no longer matches — tamper-evident by math, not by trust.
Location and time are captured automatically at shutter press and stored with the image in your on-device case file.
Seal a case to the Bitcoin blockchain via OpenTimestamps. Anyone can verify the timestamp independently — no need to trust ProofNest's servers.
Six case-type templates pre-filled with your evidence data. Pro Yearly adds AI-enhanced letters in Professional, Firm, and Final Notice tones.
Legal filing windows calculated per case type — rental deposits, car rental damage, carrier claims — with push alerts at T-7, T-3, T-1, and day-of.
Export a complete package for landlords, insurers, lawyers, or small claims — photos, metadata, and hashes in one shareable report.
Open the camera. GPS, timestamp, and SHA-256 hash are generated automatically before the photo is saved to your case.
Annotate photos, set deadlines from legal templates, and add the other party's details for a demand letter.
Generate a PDF evidence report or seal the entire case to the Bitcoin blockchain. Share with lawyers, insurers, or landlords.
Deadline Guardian keeps urgent cases at the top and notifies you before the filing window closes.
Document the unit the day you get keys or hand them back — so pre-existing damage cannot become your deposit loss months later.
Photograph every panel before you leave the lot. When a prior dent shows up on the bill, you have proof it was already there.
Carrier damage, unfinished contractor work, or a defective item received — capture condition at opening or completion before the seller disputes it.
Forever · no account required
Per case unlock
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Save 58% · AI letters included
ProofNest stores cases in an on-device database — no backend server in normal use. Optional features (AI demand letters and blockchain sealing) are clearly labelled before you use them.
ProofNest is a documentation tool, not a law firm. For court use, consult a qualified lawyer in your jurisdiction — but GPS metadata, hashes, and blockchain timestamps can strengthen your chain of custody.
No account is required. Capture, hash, and document work fully offline. Internet is only needed for optional AI demand letters or Bitcoin sealing.
Any edit after capture changes the SHA-256 hash. If the case is sealed to Bitcoin, the timestamp cannot be retroactively altered either.
Download free on iOS and Android. No account required — documentation starts the moment you open the app.