{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What is the role of proposal objects in blockchain?","a":"Proposer: The user or node identifier  who proposes the proposal."}]}],"pr":"4275f348462aa3ec98790bf12efc5088413c769bb48e05321ef6a35350207b04"}