{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How is the complete stack trace of a blockchain implemented?","a":"Data encryption and authentication: Blockchain uses encryption algorithms (such as SHA-256) to encrypt the data in each block, generating a unique block hash value. In addition, blockchain also adopts digital signature technology  to authenticate the blocks, ensuring the authenticity and integrity of the data."}]}],"pr":"439ab8264373c4b2cda7edfa8aec820f6274853235486c9ddee32d12b24cd690"}