{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can blockchain be applied in the construction of smart cities?","a":"Intelligent transportation: Blockchain technology can be applied to vehicle management, dispatch, and  optimization in the transportation field, realizing the intelligent operation of public transportation. In addition, blockchain can also be used to solve congestion problems, optimize route planning, and improve the utilization of transportation facilities."}]}],"pr":"e6b0c6b1e021c3e1f67d5db0030e1bed8a14dcc87e67a770e6ca01adcac20510"}