{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"In a blockchain, how do you confirm the receipt of a statement?","a":"Proof  of Work (PoW): Bitcoin uses the PoW consensus mechanism. Under the PoW mechanism, nodes need to compete for accounting rights by solving a complex mathematical problem (mining). The difficulty of the problem will be automatically adjusted according to the total computing power of the network to keep the generation speed of blocks at about 10 minutes per block. The process of solving the problem requires consuming a large amount of electricity."}]}],"pr":"0ade6a94c1209760f1d8bd2476e7ba48e367224329d768f2ee237bc3f469a900"}