{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does the PoW consensus mechanism in blockchain ensure the security and reliability of transactions?","a":"Difficult to tamper with: The PoW mechanism requires miners to competitively generate new blocks by solving complex mathematical problems. This process requires substantial computing resources and time, making it extremely difficult to  tamper with data on the blockchain."}]}]}