{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to ensure the traceability of transactions in blockchain account interactions?","a":"Distributed ledger technology: Blockchain adopts a decentralized distributed ledger, where each block contains the hash value  of the previous block, forming an unalterable chain structure. This enables the permanent preservation and easy traceability of transaction records in blockchain."}]}],"pr":"629579307ee497e68b3c3b0862d35c53e698d5a7842ae67b4c562f7822a24dd9"}