{"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":"Data immutability: The evidence storage module should ensure  that once the data is recorded on the blockchain, it cannot be tampered with. This can be achieved by using encryption algorithms (such as SHA-256) and timestamps."}]}],"pr":"11c635c157deb2ab4863776b9065a79285559fe0ba856215225250cf02b5d571"}