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Interesting, There aren't any newspapers left in my country, neither printed nor not printed. The closest you can find is the weekly advertising booklet here an
by catlikesshrimp 4mo ago
Interesting, There aren't any newspapers left in my country, neither printed nor not printed. The closest you can find is the weekly advertising booklet here and there. Which is irrelevant now because a computer can either stich new content to an old picture, or entirely producing a custom picture.
That would be a use case for a block chain. But I still don't understand how you are securing the integrity of the validity of the certificate stating the authenticity of the media. I only understand you are stamping media with a "at least as old as [timestamp]
- 3eb7988a1663 4mo agoIf you want to prove that "happened at or after this timestamp" you can use a randomness beacon. NIST[0] and others publish a random number every N minutes. Embed that (or a combination) of those seeds to prove that you observed this value. This does not work for the harder problem of proving an event happened before a timestamp. [0] https://csrc.nist.gov/projects/interoperable-randomness-beacons https://csrc.nist.gov/projects/interoperable-randomness-beac...
- aorloff 4mo agoThanks - this is the perfect example of how to do this
- Dwedit 4mo agoSeems like this idea solves a different problem than signed timestamps. You have access to not only the current random numbers, but also any random number from the past (as long as someone somewhere wrote it down). I just don't quite get what this could solve if you can either use a current number or an old number. Just not a future number because they're not around yet. Embedding a public random number also doesn't resist tampering, unlike signed timestamps.
- appaj 4mo agoWhich country no longer has newspapers?