{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can account data be limited in a blockchain?","a":"Digital signature: Transaction data in blockchain adopts digital  signature technology to ensure the authenticity and traceability of the data. Digital signatures can verify the source and integrity of the data, preventing tampering during transmission."}]}],"pr":"6a035ea09386e087d81c23fe04a8fd2233e35b0457c774461f93624402af1298"}