{"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 prove their identities to obtain participation rights. Digital signatures ensure that only nodes with legitimate private keys can initiate transactions or create new blocks, thereby ensuring the  security and credibility of the network."}]}],"pr":"9b528db83d08a55ca3104a253209db731c615cc7b90e3c0f98191e99711cdb82"}