{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the types of nodes in a blockchain network?","a":"Public chain node: A public  chain refers to a blockchain system where any node can join or exit at any time. It has the characteristics of complete openness and transparency, and anyone can participate. Public chain nodes are responsible for processing and validating transactions in the network, jointly maintaining the stable operation of the blockchain."}]}],"pr":"636c6b1ab3277c975f77f8e53d4f5a23a7c22e8e87d4896274bee5b2e2c05dae"}