An early writeup along these lines was a paper I did for Rebooting Web of Trust: https://github.com/WebOfTrustInfo/rwot5-boston/blob/master/final-documents/activitypub-decentralized-distributed.md
My thinking has changed a bit since then but the core ideas are largely the same. But we need ways to be able to share content in a p2p manner while preserving privacy; how to do that? That's what #Spritely is currently exploring w/ Magenc, Golem, Crystal
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