{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do validation nodes in blockchain ensure network security and stability?","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 is changed, it will cause the hash value of the subsequent blocks to change, making the entire chain invalid. Therefore, if you want to tamper with the data on the blockchain, you need to tamper with all the related blocks and obtain consensus from the majority of nodes."}]}],"pr":"6563af42fb0b82c9192d04689918098d12fb4b7813ca73c18b48c08af6ca8bf3"}