{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain improve the effectiveness of data management?","a":"Data integrity and traceability: Blockchain uses encryption algorithms and consensus mechanisms to ensure  the authenticity and integrity of data, enabling each data record to have traceable sources and timestamps, making it convenient for auditing and verification."}]}],"pr":"ec48c6c03ff3b87dfa7c6edc2e2722ad3f28f50fd4949ce09b215f40d8fe4774"}