Trusted hardware running remotely-attested trusted software can capture imagery that can be highly assured to be real. Trusted timestamping, when correctly imp

Trusted hardware running remotely-attested trusted software can capture imagery that can be highly assured to be real. Trusted timestamping, when correctly implemented, completely prevents the generation of imagery after-the-fact. Any false imagery would need to be pre-prepared prior to an event in time, or generated in real time. And a trusted device would need to be exploited to "record" it. PKI allows individuals/organizations/governments to cryptographically associate their reputation with specific pieces of content. There will always be the possibility of exploitation of trusted hardware. Apple's eternal fight against the jailbreak scene is evidence of this. However, the combination of these techniques would go a long way towards making the production and distribution of fake imagery difficult. But, as already stated, the actual problem is societal. People don't really care that much, and enjoy living in their echo chambers.