{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do digital signatures ensure information security in blockchain?","a":"Identity authentication: In a blockchain network, participants need to use digital signatures to prove their identities. Private keys are used for signing, and  public keys are used for verifying signatures. Only nodes possessing the correct private key can initiate valid transactions, ensuring that participants in the network are legitimate."}]}],"pr":"59fd64ee6ef46176a9d7e899e4555feccb44242e66828510deb61de765a183b1"}