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ProofLens
A camera that makes every photo tamper-evident
ProofLens bakes proof into a photo at the moment you take it: a local SHA-256 fingerprint, an RFC 3161 trusted timestamp from an independent authority, and a Bitcoin anchor via OpenTimestamps that anyone can verify later. Burn date, time, GPS, altitude and notes into the image with configurable watermark templates, keep every proof in an evidence library, and verify any ProofLens file fully on device. Photos never leave your phone; only the hash is sent for timestamping.
Top comment
Hi Product Hunt! We built ProofLens for anyone who has ever needed to show that a photo really was taken when and where they say: renters documenting a flat, contractors logging progress, people recording damage. Three independent layers of proof, and your photo itself never leaves your device. Curious what workflows you'd use it for.
About ProofLens on Product Hunt
“A camera that makes every photo tamper-evident”
ProofLens was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #327 on the daily leaderboard. ProofLens bakes proof into a photo at the moment you take it: a local SHA-256 fingerprint, an RFC 3161 trusted timestamp from an independent authority, and a Bitcoin anchor via OpenTimestamps that anyone can verify later. Burn date, time, GPS, altitude and notes into the image with configurable watermark templates, keep every proof in an evidence library, and verify any ProofLens file fully on device. Photos never leave your phone; only the hash is sent for timestamping.
On the analytics side, ProofLens competes within iOS, Privacy and Photography — topics that collectively have 266k followers on Product Hunt. The dashboard above tracks how ProofLens performed against the three products that launched closest to it on the same day.
Who hunted ProofLens?
ProofLens was hunted by Stone. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of ProofLens including community comment highlights and product details, visit the product overview.