{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"The traceability of blockchain includes the following content:","a":"The trace record of blockchain mainly includes the following contents: \n1. The hash value of the previous block header, which is used to ensure that blocks are connected in sequence;\n2. Timestamp, recording the generation time  of the block;\n3. Random number, which is the answer to the arithmetic problem competed by all miners across the network;\n4. Difficulty target, the difficulty coefficient rating for the arithmetic problem;\n5. Transaction details, which record the sender, recipient, amount, and digital signature of the sender for each transaction;\n6. Transaction counter, indicating the number of transactions contained in each block;\n7. Block."}]}],"pr":"214e15df821abc1f73e692aceb971cab78a3100a1ad8c41887292bcc2e49a4ca"}