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VERIFIABLE VIDEO We need verifiable video to prove that footage hasn't been faked with AI. We can get there with cryptocameras. Suppose that when you take a video, you can optionally put its hash onchain for a small fee. This is like a digital notary public. It establishes that (a) the video existed at that timestamp and (b) you are the user who wrote that video file to the blockchain. Of course, it would still possible to take a video, manipulate it with AI, and then put its hash onchain it while claiming it’s real. But it could be made quite difficult, on par with spoofing Apple’s GPS or harder. Any major social network could build verifiable video into their software right now. You just take the camera app and add “verifiabilty” as another mode. It’d be similar to slow-mo or time-lapse, but require a small fee to write a verifiable video onchain. And any phone vendor could also put verifiable video into hardware if sufficient demand existed. They could probably make it very hard to fake by streaming the video hash live to the blockchain as it was recorded. In fact, citizen journalists of the future might have to post verifiable videos, with an onchain checkmark next to them, or else people would consider them more likely to be fake. So, there’s a light at the end of the tunnel. AI makes everything easy to fake, but crypto makes it hard again. PS: The use cases go way beyond media as well. If you generalize the concept of cryptocameras to cryptoinstruments, you could get verifiable chain of custody for every important piece of scientific data, like DNA sequencing data or temperature measurements. That could go a long way towards reducing academic fakery and dealing with the replication crisis.