Earlier quoted context omitted.
I'm head-down in writing NuCypher as we speak, but it's obvious to me how to do what we're doing without a distributed consensus mechanism, and I do think that the real world use cases will be pretty rad. Our system allows an actor (Alice) to select any number of recipients (Bob) in a Policy. Alice can disappear from the network forever, and subsequently, any DataSource can encrypt data, using Alice's public key, whi…
how is this better than pgp? what does it do that keybase can't already do?
With proxy re-encryption, you don't. So any use cases that involve Alice disappearing while others continue to be able to encrypt for Bob (even without knowing who Bob is or what his public key is) are good ones for NuCypher.