{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What information can be included in the traceability object of a blockchain?","a":"The following information can be included in the tracking objects of blockchain: transaction information, user authentication, data integrity verification, timestamp, block number, prev-block (previous  block address), nonce (random number), version number (version), merkle-root information, etc. In a blockchain, each block contains a certain amount of information, which is ensured to be secure and tamper-proof through encryption technology. These pieces of information together form a complete log record in the blockchain network, realizing a decentralized trust mechanism."}]}],"pr":"e84a3cea7e09597e14fba105a528a65a6b3ede863d5c7aa4ab40f1ed8fb8c557"}