[grumbel]

> And then what would the Blockchain provide in this case?

The main thing a blockchain provides is a cryptographically secured logbook of history. It doesn't guarantee you that the entries in the logbook are true, but it gets a lot harder to fake history when you can't go back to change your story. You have to fake it right when you claim it happened and hope that nobody else records anything in the logbook that conflicts with your story.

[kc0bfv]

I can see how then a journalist source could use this to help prove their integrity. And I like that as a solution for that...

But - I don't really see that as the issue today. Those outlets that are interested in lying don't have to participate in this Blockchain chain of proof system. The malicious entities like political groups cited in the article definitely don't have to participate. It's still really on the viewer/spreader of the fake images/misinformation to verify the images, and to only rely on verifiable images. But I think a system like that would leave out most of the population who simply don't care.

Perhaps my worry about leaving out that chunk of population means this problem is unsolvable - and therefore my point is unfair. But I do think we need some solutions that are practical for widespread acceptance and use. If I can't imagine my parents (who are tech literate) would participate, and can't imagine some of my non-nerd friends wanting to participate, I don't think it solves the problems I'd like systems like this to solve.

[hdm41bc]

I don’t think most people need to adopt this on their cameras for it to work. My perspective here is that journalistic sources that want to be trusted could employ this system. Along with signing the media and the blockchain, a system would need to be built to simply show the change log and history of a photo from the source. These journalism websites could just link out to it to demonstrate their veracity.

Once that’s adopted by the NYTs, WSJs, BBCs of the world, I’m hoping there would be critical mass to pressure more and more journalistic sources to adopt this standard. Eventually, any credible journalism would be on this technology and any outlet that doesn’t use this would be viewed with a grain of salt.

I agree though that a number of developments would have to happen to make this a reality. I would think that a partnership between NYT and Apple or Nikon could kickstart it though.