Futarchy, "quadratic coin lock voting" proposed by Vitalik based on QV
Moving beyond coin voting governance, Vitalik proposed a concept called "quadratic coin lock voting" based on Futarchy and Quadratic Voting (QV). In order to implement this concept, two things are necessary. First, a system of One person, one ID is needed to ensure that each person can only have one identity for voting. Second, it is ideal to have a method to prevent users from bribing others to vote in a certain way. Both of these requirements are implied in the original context of QV as a political voting mechanism, but they are not default features in blockchain technology. In quadratic coin lock voting, when a user supports a decision, they need to lock their Ether for a certain period of time. If the decision they opposed passes, they can immediately retrieve their Ether. Users can choose the duration of the lock-up period, and the weight of their vote is multiplied by the square of this duration. Locking Ether incurs a cost, but if a user has a strong conviction to stay in the Ethereum ecosystem, this cost can be minimized. Therefore, this voting mechanism has a forward-looking element.