{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do consensus rules in blockchain ensure the traceability of transactions?","a":"The mining process requires a significant amount  of energy and computational resources, which makes it difficult for"}]}],"pr":"75db1aee58aaedf8fad880fae3469dbad2af293e2b68d44ac1f7b442c2f8bc39"}