{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain ensure the integrity and traceability of data?","a":"Blockchain ensures data  integrity and traceability by adopting distributed ledger technology. Specifically, blockchain is a decentralized database that distributes data records across multiple independent nodes in a network. Each node saves the complete ledger data, and when data changes occur in a certain node, other nodes conduct synchronous verification. This decentralized structure ensures data consistency and immutability.\n\nThe traceability of blockchain is manifested in each transaction being chain-linked, with each block containing the hash value of the previous block. As a result, once the data in a block changes, it will affect the linkage of subsequent blocks."}]}],"pr":"4d7ed88888dba6f74e69f387aff454d4f009d0b7be1b78a2ea3925f00bcd48b6"}