{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What information can blockchain's traceability records return?","a":"The trace record of the blockchain can return the following information: 1. The hash value of the previous block header, used to ensure that blocks are connected in sequence; 2. Timestamp, recording the generation time of the block; 3. Random number, which is the answer to the arithmetic problem participated by  all miners across the network; 4. Difficulty target, the difficulty score of the arithmetic problem; 5. Transaction details, which record the sender, receiver, amount, and digital signature of the sender for each transaction; 6. Transaction counter, indicating the number of transactions contained in each block; 7."}]}],"pr":"a3a477572a8adb68cc6da8818dcba454cc5ab0ee9ed6c9326c11785589473561"}