{"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":"Decentralization: Nodes in a blockchain network validate and  share data with each other, without relying on centralized servers or institutions. This feature reduces the risk of single-point failures."}]}],"pr":"d075ac9e2e2f9b3ea7d1636ac2be5d06130fe556ff8e42c418615024c490c4e8"}