Re:Ask HN: Can cryptographic time-stamping protect our histo...
by axelsvensson on Tuesday September 13, 2022 @01:17AM
(#32820902)
That's why I'd like to see a web archive doing this, so that most publicly accessible content gets a timestamp. That way, it would be suspicious to present an image of an event in the far past that should've been published long ago.
Cryptographic time-stamping can show that a set of images existed at some time, but not that no other images existed at that time.
So, unless you manage to time-stamp most images in the world, there will be a huge set of images without provenance.
The creator of fake content will just add to that set.