Ethereum #38: Smart Contract System Design
https://blog.colony.io/towards-better-ethereum-voting-protocols-7e54cb5a0119
https://blog.colony.io/token-weighted-voting-implementation-part-1-72f836b5423b
https://blog.colony.io/token-weighted-voting-implementation-part-2-13e490fe1b8a
https://sunnya97.gitbooks.io/a-beginner-s-guide-to-ethereum-and-dapp-developme/writing-smart-contracts/other-uses-of-commit-reveal.html
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