{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the roles of cumulative difficulty in blockchain?","a":"Protecting network security: Accumulated difficulty is an important parameter in the blockchain network for miners to verify computing power, ensuring the security of the blockchain network. Miners need to solve complex mathematical problems to prove their workload, thereby obtaining block rewards. The higher the accumulated difficulty, the higher the cost for  attackers to crack the blockchain network, thus reducing the risk of attacks on the network."}]}],"pr":"a9f494e3e966004ee0ecfa89cb44c80447c12da0c291a10783ef4983bf0b4132"}