I made a new kind of Trusted Timestamp based on plaintext encoding
Timestamp It is the timestamp camera app for iPhone and Android. Stamp time, date, and GPS on photos, organize projects, and share client-ready PDF reports. Trusted by 700K+ field pros. I've just launched a new site that creates Trusted Timestamps.

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My friends and I made an app that uses your phone's camera to track and improve your form.
Time capsules for your future self. Simple. Beautiful.
Free Quantum-Resistant Timestamping API (Dual-Signature and Bitcoin)
news.ycombinator.comSasaSavic.ca recently launched a public cryptographic timestamping service designed to remain verifiable even in a post-quantum world.
Open Scanner
github.coman open-source document scanning app for iPhone
Scenestamps
news.ycombinator.comA website for sharing movie scenes with timestamps