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submitted 11 months ago by floofloof@lemmy.ca to c/technology@lemmy.world
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[-] lolcatnip@reddthat.com 1 points 11 months ago

How is a hash of the image supposed to prove anything about when it was created?

[-] FaceDeer@kbin.social 3 points 11 months ago

You post it publicly somewhere that has a timestamp. A blockchain would be best because it can't be tampered with.

[-] lolcatnip@reddthat.com 1 points 11 months ago

Ah, I thought you were saying the hash proved something on its own. Lots of weird ideas about crypto in this thread.

[-] lemming741@lemmy.world 1 points 11 months ago

That proves it existed at a specific time in the past, not that it didn't exist before that. What's stopping a hash of the Mona Lisa on a block chain with today's date?

[-] FaceDeer@kbin.social 2 points 11 months ago

It also doesn't materialize ponies out of nothing. It can't do everything, but surely you can see that there are a lot of situations where being able to say with confidence that "this picture existed in exactly this form at exactly this date" is a super useful thing?

[-] lemming741@lemmy.world 1 points 11 months ago

It doesn't prove when it was created, only that it existed. Previous poster /u/lolcatnip is talking about creation date

[-] FaceDeer@kbin.social 2 points 11 months ago

And that's all I'm saying that it does.

As I said, it's not perfection for every possible application. But it is still highly useful in many applications.

this post was submitted on 21 Nov 2023
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