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I see blockchain-verification hype all over the place, and no-one's ever been able to convince me of how it would actually work in situations like this. Could y
by scubbo 6y ago
I see blockchain-verification hype all over the place, and no-one's ever been able to convince me of how it would actually work in situations like this. Could you elaborate? How would you differentiate between "a 'legitimate' video that has been taken by a camera" and "a video that has been edited, and then had its provenance metadata edited to look like it is raw"? Given that there cannot possibly be any consensus protocol that verifies that "data I created myself" is legitimate, how can you prove that anything isn't legitimate?
- evanevan 6y agoOne thing you could do is have the camera hardware sign the raw image, then make a zero knowledge proof that says original photo was signed by real hardware, and then the only edits applied to it were simple things like cropping, changing colors etc Seems reasonable to coordinate the updates with a blockchain (though not necessary for use cases where you trust the platform / coordinating entity). Disclaimer I work at a zkSNARK / blockchain company :)
- Nursie 6y agoSo like most solutions involving blockchains, no blockchain is actually required.