{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the characteristics of transaction confirmation time in blockchain?","a":"Consensus mechanism: Nodes in the blockchain network need to reach consensus to validate and record new transactions. There are  various types of consensus mechanisms, such as,"}]}],"pr":"785c5dbc2a49d4da9a2a42bfc950f2deb1e1e9d3c16826fc8cdcad4a526890c8"}