{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do smart contracts in blockchain ensure the irreversibility of execution?","a":"Encryption algorithms: Data in blockchain is encrypted and verified using encryption algorithms (such as SHA-256). The execution process and results of smart contracts are protected by encryption, ensuring security  during data transmission and processing."}]}],"pr":"380c8192e9c6a34b79a17702f7ff4bf61994ff2636994f71a68a3184d6e05800"}