NEST Protocol is a decentralized price oracle network developed based on the Ethereum network. NEST defines and implements a completely new scheme for generating on-chain prices on the blockchain. It uses market game theory to generate the price of the off-chain market on the chain synchronously through the two-way quote of miners, and combines the NEST quote mining mechanism to incentivize the miners to make it a set of logical closed-loop distributed quote systems, perfectly generating the off-chain price on the chain synchronously, forming the NEST price oracle.