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Re:ActivityPub: decentralized social networking protocol by jack_zampolin on Wednesday January 24, 2018 @11:03AM (#16223695)
> I don't know if there's an easy way to share keys in a decentralized way, but that'd be an interesting problem to solve (some blockchain maybe).

There is a way to do this! Check out https://bockstack.org. We are working on decentralized identity and key management.

Re:ActivityPub: decentralized social networking protocol by rapnie on Thursday January 25, 2018 @04:18AM (#16229737)
correction.. you probably meant https://blockstack.org

:)