{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain ensure the traceability of transactions?","a":"Blockchain achieves traceability of transactions through decentralized and distributed ledger technology. Each transaction is recorded as a block, then connected in a chain to form an unalterable historical record. This characteristic makes blockchain invaluable in supply chain management, financial transactions, and other fields. In a blockchain network, once transaction information is recorded in a block, it is difficult to tamper with, ensuring the traceability of transactions.  Furthermore, blockchain's transparency and immutability allow each participant to view the historical records of transactions, further enhancing traceability."}]}],"pr":"dd5364406f8adbe6cc8a2df27a3db5281fe561ebdac1a82de511744fdf91ee39"}