Thanks for this awesome list.<p>Coincidentally, we've just launched a $20k consensus challenge for Viewstamped Replication: <a href="https://github.com/coilhq/viewstamped-replication-made-famous" rel="nofollow">https://github.com/coilhq/viewstamped-replication-made-famou...</a><p>We don't implement the Reconfiguration Protocol yet which I believe is the correctness violation found by Ports et al.