{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the possible impacts of selfish mining in blockchain?","a":"Increased network congestion: Due to the existence of forks between  the private branch controlled by the selfish mining pool and the public branch, multiple chains compete for block confirmation in the network, resulting in increased network congestion and slower transaction speed."}]}],"pr":"12d001390105df59d8208a715608dc7973ed8221f1a6c1c194c8b306999f1864"}