{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology achieve traceable and verifiable transaction history?","a":"Cryptography: Blockchain uses cryptographic algorithms to secure the network and ensure the integrity of the transaction data. Each transaction is linked to the previous one through a hash function, forming a chain of transactions. This  chain of interconnected"}]}],"pr":"76f58a707059c8db7a1223e3fe8aff061d7f4c7f76c9105f572c25285f26805d"}