{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the advantages and disadvantages of the consensus mechanisms in blockchain?","a":"Transparency: All transaction records  on the blockchain are public, which helps to improve the transparency of the entire system."}]}],"pr":"c70dfe646522804c2b85748dea03be9a31cde104c1d00fb89a0ca7a9d091f3e0"}