{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do hash values in blockchain ensure the integrity of transaction data?","a":"Transaction data processing: In the blockchain network, each node receives data from the previous  node. When a node receives new transaction data, it will perform a hash operation on these data to generate a hash value."}]}],"pr":"17e41e0f2763a2ebe95bb77c43c024f8f8b96b8c8c7b5ed9d4d2d845bd23663a"}