Zcash engineer Evan Forbes explains how they're working to overcome a fundamental limitation of proof of work to enable much faster blocks and higher throughput “One of the fundamental problems with proof of work comes from its superpower. Proof of work is permissionless. It's censorship resistant and that means that anyone can produce a block” “As you produce a block, it can happen that someone else produced a block at the same exact time and this is problematic because now you lose money effectively” “It's basically the fundamental problem of two people producing blocks at the same time. This is the bound on making things lower” “There's different approaches. You have this DAG approach where we simply let all blocks contribute to the chain or most blocks” “There's a separate approach that we're working on now which is similar to autobond, which is another thing from proof of stake that we're sort of adapting for proof of work” “Both of these things allow us to make the blocks much, much, much faster and much, much higher throughput”