{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to prevent tampering in a blockchain?","a":"Cryptographic encryption: Blockchain uses cryptographic techniques to encrypt data, ensuring  its security. Asymmetric encryption technology enables participants to use private keys to sign transactions, thereby ensuring the authenticity and immutability of transactions. Meanwhile, consensus mechanisms (...)"}]}],"pr":"d56931aa48c38c2093c3c254ee829e61ebe7afe6a544f04e56b5d2264941dd82"}