{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the security mechanisms in blockchain?","a":"Cryptographic encryption: Blockchain uses cryptographic algorithms (such as SHA-256) to encrypt and sign data, ensuring the security  and integrity of the data. Nodes participating in the blockchain network need to sign transactions with their keys, thereby ensuring the authenticity and origin of transactions."}]}],"pr":"60285e1d45e1d95d6b52ce634a646717da2f95e6407af0baca602837503d7a09"}