It seems that this post has been (temporarily?) taken down. There was a link to the draft paper on federated Byzantine fault tolerance, which is what they're using for the Stellar Consensus Protocol. It makes for fascinating reading. There was also a link to the stellar-core repo on github, which has several great README files explaining the Stellar architecture.
Most excitingly, he drew comparisons between distributed consensus protocols (i.e. replicated state machines) and distributed version control systems such as git. It turns out he was (one of?) the authors of monotone, an early attempt at building a modern DVCS.
The links:
https://www.stellar.org/papers/stellar-consensus-protocol.pd...
https://github.com/stellar/stellar-core
