{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the requirements for the evidence storage module in the blockchain?","a":"Decentralization: The evidence storage module should be built on a decentralized basis to ensure the security and reliability of the data. Decentralization can eliminate single points of failure, enhance the system's resistance to  attacks, and prevent data tampering."}]}],"pr":"3ff7a9bf8fc817cb293618952dbcbc1e2d4656725a80483503d09039c6d2c92f"}