[HNLurker2]

- Alternative non-monetary uses of blockchains, primarily for friend-groups or niche cultures - I've heard of private blockchains being used to broadcast locations of secret just-in-time-announced underground raves (in Berlin), so police can't just find out about it on facebook or something like that; this sort of replaces friend-of-friend word-of-mouth invitations and I guess you could implement fine-grained privacy/invitation rules this way

Isn't it computer costly apart from monetary purposes

[pizza]

It can be pretty energy wasteful relative to other systems that accomplish similar goals. But it's cool, though. :)

Read this for more info https://www.wired.co.uk/article/rave-culture-on-the-blockcha...