NEST Protocol is a decentralized price Oracle machine network developed based on Ethereum network. NEST has defined and implemented a new solution for generating on chain prices on the blockchain. It uses the market game theory to synchronously generate the price of the off chain market on the chain through the way of miners' two-way quotation, and combines the NEST quotation mining mechanism to motivate miners, making it a set of logical closed-loop distributed quotation system, perfectly generating the off chain price on the chain at the same time, forming the NEST price Oracle machine....