{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the functions of certificates in a blockchain?","a":"Data security: Certificates can protect data privacy by encrypting sensitive  information, making it difficult for unauthorized individuals to access or tamper with the data. This helps maintain the security and confidentiality of sensitive data stored in the blockchain."}]}],"pr":"f56c8db178ce823f2ee34c5d1a0e4497808b8c1cb80dac3c66442170146267c0"}