{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What is the role of nodes in a blockchain network?","a":"Nodes are responsible for storing transaction data in the blockchain, including block headers and block bodies. In addition, nodes need to process information from other nodes, such as proposals for new blocks, transaction  requests, etc."}]}],"pr":"6b9fa0dc788ce8c06481a7aa346eb6222a4bea46f1c2a1da32ffa78e3beb9327"}