{"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":"42195f3502f175298d29e1a5b55e1fce0a3447883a08092bb2855b9745addfa0"}