{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain ensure data traceability?","a":"Encryption algorithm: Blockchain  technology uses encryption algorithms (such as SHA-256) to generate unique hash values for each data block. When data changes, the hash value also changes accordingly, enabling monitoring of data modifications. This helps ensure the integrity of data in"}]}],"pr":"67a7e6b906e4e3e80fbe8a0281050300c0641117469a2be4d0087460e495616f"}