Crypto works for trust of computing systems - it can make some claims about the transformations of the captured data or about the integrity of the software handling these transformations, but it fundamentally can't make solid claims about reality that's supposedly being captured. You can't put crypto between reality and a sensor.
At best, crypto can give you a statement like "something possessing the particular secret X claims to have sensed this data at this point of time" combined with "there's a device with secret X that has it's software/firmware integrity verified and signed by entity Y". Crypto can't ensure that the secrets on the device aren't actually leaked by the manufacturer to enable "verifying" of arbitrary data outside of that device, and there's always the option to simply ensure that the sensor "sees" what you want; a camera and all the crypto on it can't tell whether it's pointed at a real event, at a staged event, or at a sophisticated optical device projecting arbitrary photoshopped data.
At best, crypto can give you a statement like "something possessing the particular secret X claims to have sensed this data at this point of time" combined with "there's a device with secret X that has it's software/firmware integrity verified and signed by entity Y". Crypto can't ensure that the secrets on the device aren't actually leaked by the manufacturer to enable "verifying" of arbitrary data outside of that device, and there's always the option to simply ensure that the sensor "sees" what you want; a camera and all the crypto on it can't tell whether it's pointed at a real event, at a staged event, or at a sophisticated optical device projecting arbitrary photoshopped data.