PoS Blockchains - Designs, Consensus, Attacks

with @lera_banda @tim_roughgarden @smc90 An overview of proof-of-stake blockchains -- from quick background on how blockchains work, difference between PoS & PoW, and approaches to improving both; to digging deeper into Sybill attacks and Sybill resistance; and much more on the design (and some debates) of PoS blockchains overall.