{"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":"f487e2443a8295c87f718cd1afd7adc08e04626358680b1fc8875ad92a877a1e"}