{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology improve the traceability and transparency of financial transactions?","a":"Immutability: Blockchain technology has the characteristic of being immutable, with each  block containing the hash value of the previous block, forming a chain structure. Once the data in a block is changed, it will cause the hash value of subsequent blocks to change."}]}],"pr":"2353fb9408a47a938284f782a37727f57d6f0728cf3eb10030671c950004aa36"}