Shownotes:

https://urbit.org/blog/why-urbit-probably-does-not-need-a-blockchain

https://urbit.org/blog/bootstrapping-urbit-from-ethereum

https://urbit.org/blog/pki-maze

https://urbit.org/blog/urbit-and-the-blockchain

https://github.com/urbit/urbit/tree/lf/neo