{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How is the price feedback mechanism implemented in blockchain?","a":"Smart contract execution: A smart contract is an automatically executed program that runs on the blockchain platform. It can interact with the transaction queue and execute the corresponding operations based on the quotation information. For example, when a market participant submits a purchase order, the smart contract will check  whether there are corresponding sale orders in the transaction queue. If so, the smart contract will execute"}]}],"pr":"38720a21c280de41ac8f6a0b85507bce533811a2f1b008376a7e53b6ad3d261d"}