Re:Kodak shares up as it announces KODAKCoin cryptocurrency
by twanvl on Tuesday January 09, 2018 @01:58PM
(#16108724)
Wouldn't it be enough to submit a hash of the photo? Then sure, that hash is around forever in the blockchain, but without the original photo that hash is useless. It can only be used to prove that the photo existed at the time the hash was added, and with a digital signature, who added it.
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Re:Kodak shares up as it announces KODAKCoin cryptocurrency
by eat_veggies on Tuesday January 09, 2018 @05:39PM
(#16110845)
You could steal a photo by tweaking a single pixel or EXIF field, and suddenly it's an original image with no registered hash.
Re:Kodak shares up as it announces KODAKCoin cryptocurrency
by drewm1980 on Wednesday January 10, 2018 @02:48AM
(#16113200)
Yeah, any system like this has to deal with the analog hole somehow, and there really are no perfect solutions. Reminds me of the post the other day about a white noise video on Youtube getting a bunch of copyright infringement notices. You can take a signal out of the analog, but you can't take the analog out of a signal!
Re:Kodak shares up as it announces KODAKCoin cryptocurrency
by Keres on Wednesday January 10, 2018 @08:24AM
(#16114708)
You can do a lot to mitigate that
http://www.hackerfactor.com/blog/?/archives/529-Kind-of-Like...