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As I mentioned in another comment - there is such an effort underway https://contentauthenticity.org/

They don't intend to dictate who can authorize media, only provide a verification mechanism that the media was sourced from the place it claims to have been sourced from and is unaltered.

I think of it as https but for media content.

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Woah! I had no idea something like this would be so far along.

It seems like they're on the right track. I think the key is to keep scope creep to a minimum. As soon as someone tries to add DRM, for instance, the whole effort will go up in flames.

Had this idea a few years ago. Great to see it getting legs.

Ditto, although I was thinking of a slightly different approach. I didn't think anyone was actively doing anything but I love when I have ideas that seem independent and they magically become 'realized' from my ignorance because someone else did it already.

Yeah, I was expecting a range of cameras with cryptography embedded.

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