I think this is pretty cool, check it out..
"Recordings taken through the Uproov App are tamper-proof and therefore any changes to even just one pixel or byte renders the recording invalid, as it is checked against its blockchain record written from the original picture you took with Uproov. This means that for the first time you really can be sure that an image or video recording really is true – unedited - and completely original."
http://www.coindesk.com/press-releases/new-ios-camera-app-uproov-signals-end-fake-videos-photos/uproov.com
I am no blockchain guru but this seems like a fascinating use of blockchain technology that could really be of great service to a lot of people. For example, the traders here, where trust is king and being able to really PROVE something is gold.
I did a search here because I wanted to know more from those more experienced in how this cryptoographic proof stuff really works, but there is only 1 hit for "uproov".
What do you think?
Could this be a big help to many of the people here that conduct business?
I see a lot of "oh, that could just be photoshopped", or "take a picture with a piece of paper with your btctalk acct name and date written on it" etc. Maybe this could be of use for these types of situations?
It seems like it's automatically signing a bitcoin addy with your pic/vid file therefore it can later be authenticated just like a signed message or be void if even one pixel is changed just as if any single character in a signed message is changed it invalidates the whole thing..
I am also assuming this works on THE bitcoin blockchain, it seems they just say "the blockchain" so I really don't know..