{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the attributes of valid evidence types in a blockchain?","a":"Immutability: Blockchain employs encryption technology, which makes it difficult to tamper  with data once it is recorded in a block. This feature makes blockchain an effective platform for storing and transmitting reliable data."}]}],"pr":"d8a3930a6e33ba5c8428a0eb67ea9dab4723f3c20bb92f264b2c6b3cd5e971b4"}