{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain ensure the stability and reliability of data?","a":"Difficult to tamper with data: Each block contains the hash value  of the previous block, forming a chain structure. Once the data in a block changes, it will cause the hash value of the subsequent blocks to change, thereby rendering the entire chain invalid. Therefore, it is nearly impossible to tamper with the data in a blockchain system."}]}],"pr":"2ab1a185297d188eadf04a3d187548c2697d46a8d5e86f13c1ea60a90ada482f"}