{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do consensus rules in blockchain record and update the signature information of validators?","a":"Nodes (miners) in the blockchain network competitively solve a complex mathematical problem called Proof of Work (PoW). The difficulty of  solving the problem is automatically adjusted according to the total computing power of the network to keep the block generation rate at approximately one block every 10 minutes."}]}],"pr":"8d077fddc693e3048f049a4c073dc0aa98d01f2705dee0c889944900d6f91fce"}