{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to upgrade a blockchain node?","a":"Obtain upgrade proposals: The blockchain community or development team proposes upgrades, including suggestions for new features and improvements. These proposals are usually discussed and  reviewed on the blockchain network."}]}],"pr":"64abcca6225f93abf4f09be9e88123f7c3c7ea05f448735c64126a959157ba11"}