{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What can data snapshots in a blockchain be used for?","a":"Reconstructing historical transactions: Data snapshots can record every transaction in the blockchain network. By analyzing the snapshots, past transaction records and  asset changes can be understood."}]}],"pr":"427300bffe6b12eb8cecd966ae34864b9f53e5b5437338810cd5da165967ef12"}