{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What is the role of nodes in a blockchain?","a":"Data storage and transmission: Nodes are computer devices in the blockchain network that possess complete  copies of the blockchain and are responsible for storing and transmitting blockchain data."}]}],"pr":"0cb146d9c2bf776b259b59b192f6c52303d6a91bb2e8b36dc8b398a721bf5a58"}