Prove exactly when you took it
Like holding up today's newspaper, but nobody can fake it. Put this live code in your photo and sebbi pins the picture to the minute, checked against Bitcoin. Receipts, damage, deliveries, the state of a flat, a meter reading: proof that stands up.
1. Write this code down
······
Write it on a piece of paper (or show it on another screen) and put it in the photo, next to what you are proving. Nobody on earth knew this code until Bitcoin made it a few minutes ago.
2. Take the photo
Get the code and the thing you are proving in the same shot.
Why it works
- Not before: the code comes from a Bitcoin block. Nobody could know it before that block was found.
- Not after: the photo's fingerprint is sealed the moment you tap, and the seal is anchored in Bitcoin.
- Not changed: change one pixel and the fingerprint no longer matches.
- Nobody has to trust us: both ends check out on any public Bitcoin explorer.
Sealed. Pinned in time.
⚠ Keep your original photo
The original file is your evidence: it is what matches the fingerprint. Save it now and do not edit or re-send it as a compressed copy.
Save the original photo