{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the responsibilities and obligations of validators in a blockchain?","a":"Protect network security: As key participants in the blockchain network, validators need to maintain the security of the network,  preventing malicious attacks and tampering."}]}],"pr":"91d99b04bfa1490cc92aef015c9b7e334673adacfb7b5f93bd34eaf25811e78d"}