{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain ensure the security and reliability of transactions in smart contracts?","a":"Distributed ledger technology: Blockchain adopts distributed ledger technology, storing transaction information on multiple nodes, ensuring data consistency and tamper-resistance. Each node needs to validate the authenticity and effectiveness of transactions, thereby ensuring the security of transactions."}]}],"pr":"2dca59a7398c95f34549420040003c2f984da350e9379ca18d6198d04c4e876e"}