{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the advantages of test validation nodes compared to public nodes in the blockchain?","a":"Privacy protection: Test validation nodes do not require personal identification information, ensuring the privacy and security of users."}]}],"pr":"8dd607e9ccd4002f8a190fb96572e2612b93043ac3be02e3473354c142fe29ab"}