{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the roles of nodes in a blockchain network?","a":"Data Storage: Nodes are responsible for storing transaction data  and block information on the blockchain, ensuring the integrity and security of the data."}]}],"pr":"3470a4ab7dd10308ddeaedc64b9689bb7e633dec63aadd7466d07dc0f9b3c465"}