Prooflens
Tamper-Evident Camera
Prooflens is a forensic-grade camera that makes every photo provable. Capture, and a tamper-evident proof is baked in at the moment of the shot — court-grade evidence in one tap.
Every photo, provably yours. A cryptographic proof is baked into every shot — only the hash ever leaves your phone.
Core Features
Cryptographic Proof
At capture, each photo is hashed with SHA-256 and stamped by an RFC 3161 authority — proving it existed at a point in time and hasn't been altered since.
Blockchain Anchoring
Optionally anchor the hash to the Bitcoin blockchain via OpenTimestamps for permanent, independent, trust-minimized verifiability.
Forensic Watermark
Burn time, GPS coordinates, altitude, and custom notes directly into the photo — watermark template and fields fully configurable.
Local-First Privacy
Photos are captured, watermarked, and hashed on-device and never uploaded — no account, no tracking. Optionally strip the device serial for anonymous evidence.
Plans
Lifetime Access
Pay once. All Pro features forever.
Annual
7-day trial · Then $14.99/year.
FAQ
Does Prooflens upload my photos?
No. Photos are captured, watermarked, and hashed locally on your device. To create a timestamp, Prooflens transmits only the photo's SHA-256 hash — a one-way fingerprint from which the original image cannot be reconstructed.
Can the timestamp be used as legal evidence?
Prooflens provides a cryptographic proof of existence — that a photo existed at a given time and hasn't been altered. It is technical evidence, not legal advice; whether it's admitted depends on the evidentiary rules of each jurisdiction.
Does it need an internet connection?
Capture, watermarking, and hashing work fully offline. Obtaining an RFC 3161 timestamp and blockchain anchoring require a connection; when offline, proofs queue locally and complete automatically once you're back online.
Is blockchain anchoring free?
OpenTimestamps is a free, open protocol. Many proofs are aggregated into a single Bitcoin transaction, so anchoring carries no per-proof cost to you.