Read my note and the thread it came from, please. My suggestion is to use local interactions to share encryption keys, encrypt local chats with those keys and - when there is a local community - also use that community to author events as a proven member of a local community. This contains no proof of location and there will be leaks of such keys and eventually such a system would need some upgrades with more discretion on who to share keys with but it would not be trivial to share footage from any supposed place on earth if the local community could challenge the claimed location.