I attended a webinar on Etherium, they argue they have extracted the block chain management functionality from bitcoin and implemented what they call a consenus machine. Here are some links that I was pointed at or found.

1. https://dgx.io/#/
2. https://www.augur.net/
3. https://groupgnosis.com/

These are implementations on consensus implementations, and I may expand my notes on these as I play/experiment with them.  Here are the core developers on youtube.

And here’s one of the things that piqued my interest

1. http://techcrunch.com/2016/05/22/all-the-cool-kids-are-doing-ethereum-now

Here’s a critique

1. https://blog.blockstack.org/the-road-ahead-for-ethereum-b5b090bcd1a#.1fsfd1pkl