{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the security advantages of transaction transmission protocols in blockchain?","a":"Data cannot be tampered with: Blockchain uses encryption algorithms to ensure the security and integrity of the data. Each block contains 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 the subsequent blocks to change, making the entire chain invalid. Therefore, it is virtually impossible to tamper with the blockchain."}]}],"pr":"291374d1c185458fe6e84490b434b75bc507f5fe9f39c5b951e63e516c36808d"}