{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the digital identity authentication technologies in blockchain?","a":"Private Key and Public Key Authentication: Identity authentication is carried out between users through signing with private keys and verifying with public  keys. This asymmetric encryption technology ensures the security of the authentication process."}]}],"pr":"68d4b077de7cf190fdbf1402813198b1a2b12072e105592baa48da93736d1800"}