{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the main features of blockchain?","a":"Data consistency:  Through cryptographic technology and consensus mechanisms, blockchain ensures that data remains consistent across different nodes, preventing data tampering."}]}],"pr":"a4dce75229d6d79d3000d5a9f82525d95e9d7afffe7218e8dd77b49f763a924d"}