{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the advantages of blockchain technology?","a":"Safer data: Blockchain adopts a distributed network architecture, with each node having an identical  ledger. Even if a node is attacked, it will not affect the entire system."}]}],"pr":"24587852849b7d35070bd80bf5976079c49d7d36c7ae814f89b4b289d87bcd8a"}