{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What is a refund in blockchain?","a":"Sender initiates refund request: The sender needs to initiate a  refund request to the recipient, explaining the reason for the refund and providing relevant information.\n\n...\n\n（Please continue translating the remaining content.)"}]}],"pr":"6473a8ccf588e11ad2e0dc9fdd047ae0d61b09fe2abdb6fd7a61fdfbd860fbdc"}