{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to enable market types in a blockchain?","a":"Design the smart  contract: According to the market type, write the smart contract to implement relevant functions. Smart contracts usually use assembly language or high-level programming languages such as Solidity."}]}],"pr":"dca7e15bfa5b06e968f7fe3b23c871ee6476e625ff4a7c536b934a7b8e9148f9"}