{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What is the role of log recording in blockchain?","a":"Data Traceability: Logging ensures that the data in the  blockchain network has traceability, causing each block to be closely connected to previous blocks, forming an unchangeable continuous ledger."}]}],"pr":"ee221dd9312f45c9218dbdee89d143550d6d5f18aa08c1f3b50e510032fb5ec4"}