{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology ensure the traceability of transactions?","a":"Distributed ledger: Blockchain records transaction data on a distributed ledger, and each node saves complete ledger data. This enables multiple parties to jointly  maintain and verify the transaction information."}]}],"pr":"c74180719f4665cdcf83009b22366db064ace235f20389b85473f95fa5ab56d0"}