{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the protection measures in the validator set in blockchain?","a":"Proof of Work (PoW): Under the Proof of Work mechanism, validators need to compete for accounting rights by solving complex mathematical problems. This makes attackers need to  consume a large amount of computing resources to break into the validator set, thereby improving the security of the system."}]}],"pr":"5cb587a169a896ff2b9c71e666c6b3eee288e55446fdeefabed2675a51db3271"}