{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do you solve the transaction confirmation problem in blockchain?","a":"Proof of Work (PoW): Miners compete to generate  blocks by solving complex mathematical problems, and then add the blocks to the blockchain. Solving these problems requires a large amount of computing power, and successful miners are rewarded with corresponding digital currencies. This consensus algorithm ensures the security of the blockchain, but it also has issues such as high energy consumption and increasing mining difficulty."}]}],"pr":"6372e3bd795f48f9fd4e03edab08b40dec687e3f05f70c471f6cb7ad8f77535d"}