{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"In a transaction, what is the role of a digital signature?","a":"Data integrity: Digital signatures can ensure that transaction files are not tampered with during transmission  and processing. If the file is tampered with after signing, the signature will fail, thereby ensuring data integrity."}]}],"pr":"bc34d8753722c9fc52dea0e8181d7af316020ba822e3f70fcf446c0b0787a144"}