{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain record transaction information?","a":"Blockchain is a decentralized distributed database technology that records transaction information. It divides transaction data into different blocks, each containing a certain number of transaction records. These blocks  are connected in sequence by time order, forming a chain, thus achieving persistence and tamper-proofing of transaction information. In a blockchain, each block contains the following key information:\\n\\n1. Previous block's header hash value: Used to ensure that blocks are connected in sequence to form a continuous chain.\\n2. Timestamp: Records the time when the block was generated.\\n3. Random number (nonce): Used to ensure the uniqueness of the block."}]}],"pr":"7c9619f0ae38081d0e1c85f78abf6e947ad05455dfc0e9d8f9917522d497cb69"}