{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain solve the credibility problem of data?","a":"Data cannot be tampered with: Blockchain adopts cryptographic principles to ensure that the hash value of each block is connected to the hash value of the previous block, forming a tamper-proof data chain. Any attempt to tamper with the data in a particular block in the blockchain will cause the structural change of the entire chain, thereby being identified by the system."}]}],"pr":"8ef7348f072916e3e3e3a97a390020995d327a85acfd04b112c989b52b9d5d08"}