{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology ensure privacy protection?","a":"Cryptographic technology: Blockchain technology applies various cryptographic technologies, such as hashing algorithms, encryption algorithms, public  key cryptography, Merkle trees, zero-knowledge proofs, etc. These technologies can ensure data security and protect data privacy."}]}],"pr":"d7b49e25d8bd0649319a234e6c2b2272d49e3eb57406dd1158a9ea5d4b182a73"}