{"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":"Distributed ledger technology: Blockchain adopts distributed ledger technology, storing data on multiple nodes to ensure data consistency and reliability. Smart contracts  run on blockchain, thus benefiting from this distributed feature, guaranteeing their irreversible execution."}]}],"pr":"b6efd94568e65f525ff59f48f4cf55845a9c95c68792ea883d50381c99c4ebf6"}