{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the differences between blockchain and traditional databases?","a":"Transaction efficiency: The transaction process in blockchain is relatively slow due to the distributed consensus mechanism, while traditional  databases have higher transaction efficiency."}]}],"pr":"b1a8798e4f58226c50785ed473ca02c1c20a6254fd957252041ced813c2a53b2"}